Prace polskich(#) (współ)autorów opublikowane w latach 2014 – 2023 wykorzystujące wiązki neutronów w badaniach z zakresu fizyki jądrowej
(#)afiliowanych w polskich instytucjach badawczych
| Abele H, Alekou A, Algora A, Andersen K, Baeßler S, Barron-Pálos
L, Barrow J, Baussan E, Bentley P, Berezhiani Z, Beßler Y,
Bhattacharyya A, Bianchi A, Bijnens J, Blanco C, Kraljevic NB,
Blennow M, Bodek K, Bogomilov M, Bohm C, Bolling B, Bouquerel E,
Brooijmans G, Broussard L, Buchan O, Burgman A, Calén H, Carlile C,
Cederkall J, Chanel E, Christiansen P, Cirigliano V, Collar J,
Collins M, Crawford C, Morales EC, Cupiał P, D'Alessi L, Damian J,
Danared H, Dancila D, de André J, Delahaye J, Degenkolb S, Di Julio
D, Dracos M, Dunne K, Efthymiopoulos I, Ekelöf T, Eklund L, Eshraqi
M, Esteban I, Fanourakis G, Farricker A, Fernandez-Martinez E,
Ferreira M, Fertl M, Fierlinger P, Folsom B, Frank A, Fratangelo A,
Friman-Gayer U, Fukuda T, Fynbo H, Sosa AG, Gazis N, Gålnander B,
Geralis T, Ghosh M, Gokbulut G, Gomez-Cadenas J, Gonzalez-Alonso M,
Gonzalez F, Halić L, Happe C, Heil P, Heinz A, Herde H, Holl M,
Jenke T, Jenssen M, Jericha E, Johansson H, Johansson R, Johansson
T, Kamyshkov Y, Topaksu AK, Kildetoft B, Kirch K, Kliček B, Klinkby
E, Kolevatov R, Konrad G, Kozioł M, Krhač K, Kupść A, Łacny Ł,
Larizgoitia L, Lewis C, Lindroos M, Lychagin E, Lytken E, Maiano C,
Marciniewski P, Markaj G, Märkisch B, Marrelli C, Martins C, Meirose
B, Mezzetto M, Milas N, Milstead D, Monrabal F, Muhrer G, Nepomuceno
A, Nesvizhevsky V, Nilsson T, Novella P, Oglakci M, Ohlsson T,
Olvegård M, Oskarsson A, Ota T, Park J, Patrzalek D, Perrey H,
Persoz M, Petkov G, Piegsa F, Pistillo C, Poussot P, Privitera P,
Rataj B, Ries D, Rizzi N, Rosauro-Alcaraz S, Rozpedzik D, Saiang D,
Santoro V, Schmidt U, Schober H, Schulthess I, Silverstein S, Simón
A, Sina H, Snamina J, Snow W, Soldner T, Stavropoulos G, Stipčević
M, Szybiński B, Takibayev A, Tang Z, Tarkeshian R, Theroine C,
Thorne J, Terranova F, Thomas J, Tolba T, Torres-Sánchez P,
Trachanas E, Tsenov R, Uggerhøj U, Vankova-Kirilova G, Vassilopoulos
N, Wagner R, Wang X, Wildner E, Wolke M, Wurtz J, Yiu S, Yoon S,
Young A, Zanini L, Zejma J, Zerzion D, Zimmer O, Zormpa O and Zou Y
(2023), "Particle physics at the European Spallation Source", Physics Reports. Vol. 1023, pp. 1 – 84. |
| Abstract: Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world's brightest neutron source. As such, it has the potential for a particle physics program with a unique reach and which is complementary to that available at other facilities. This paper describes proposed particle physics activities for the ESS. These encompass the exploitation of both the neutrons and neutrinos produced at the ESS for high precision (sensitivity) measurements (searches). © 2023 |
BibTeX:
@article{Abele20231,
author = {Abele, H. and Alekou, A. and Algora, A. and Andersen, K. and Baeßler, S. and Barron-Pálos, L. and Barrow, J. and Baussan, E. and Bentley, P. and Berezhiani, Z. and Beßler, Y. and Bhattacharyya, A.K. and Bianchi, A. and Bijnens, J. and Blanco, C. and Kraljevic, N. Blaskovic and Blennow, M. and Bodek, K. and Bogomilov, M. and Bohm, C. and Bolling, B. and Bouquerel, E. and Brooijmans, G. and Broussard, L.J. and Buchan, O. and Burgman, A. and Calén, H. and Carlile, C.J. and Cederkall, J. and Chanel, E. and Christiansen, P. and Cirigliano, V. and Collar, J.I. and Collins, M. and Crawford, C.B. and Morales, E. Cristaldo and Cupiał, P. and D'Alessi, L. and Damian, J.I.M. and Danared, H. and Dancila, D. and de André, J.P.A.M. and Delahaye, J.P. and Degenkolb, S. and Di Julio, D.D. and Dracos, M. and Dunne, K. and Efthymiopoulos, I. and Ekelöf, T. and Eklund, L. and Eshraqi, M. and Esteban, I. and Fanourakis, G. and Farricker, A. and Fernandez-Martinez, E. and Ferreira, M.J. and Fertl, M. and Fierlinger, P. and Folsom, B. and Frank, A. and Fratangelo, A. and Friman-Gayer, U. and Fukuda, T. and Fynbo, H.O.U. and Sosa, A. Garcia and Gazis, N. and Gålnander, B. and Geralis, Th. and Ghosh, M. and Gokbulut, G. and Gomez-Cadenas, J.J. and Gonzalez-Alonso, M. and Gonzalez, F. and Halić, L. and Happe, C. and Heil, P. and Heinz, A. and Herde, H. and Holl, M. and Jenke, T. and Jenssen, M. and Jericha, E. and Johansson, H.T. and Johansson, R. and Johansson, T. and Kamyshkov, Y. and Topaksu, A. Kayis and Kildetoft, B. and Kirch, K. and Kliček, B. and Klinkby, E. and Kolevatov, R. and Konrad, G. and Kozioł, M. and Krhač, K. and Kupść, A. and Łacny, Ł. and Larizgoitia, L. and Lewis, C.M. and Lindroos, M. and Lychagin, E. and Lytken, E. and Maiano, C. and Marciniewski, P. and Markaj, G. and Märkisch, B. and Marrelli, C. and Martins, C. and Meirose, B. and Mezzetto, M. and Milas, N. and Milstead, D. and Monrabal, F. and Muhrer, G. and Nepomuceno, A. and Nesvizhevsky, V. and Nilsson, T. and Novella, P. and Oglakci, M. and Ohlsson, T. and Olvegård, M. and Oskarsson, A. and Ota, T. and Park, J. and Patrzalek, D. and Perrey, H. and Persoz, M. and Petkov, G. and Piegsa, F.M. and Pistillo, C. and Poussot, P. and Privitera, P. and Rataj, B. and Ries, D. and Rizzi, N. and Rosauro-Alcaraz, S. and Rozpedzik, D. and Saiang, D. and Santoro, V. and Schmidt, U. and Schober, H. and Schulthess, I. and Silverstein, S. and Simón, A. and Sina, H. and Snamina, J. and Snow, W.M. and Soldner, T. and Stavropoulos, G. and Stipčević, M. and Szybiński, B. and Takibayev, A. and Tang, Z. and Tarkeshian, R. and Theroine, C. and Thorne, J. and Terranova, F. and Thomas, J. and Tolba, T. and Torres-Sánchez, P. and Trachanas, E. and Tsenov, R. and Uggerhøj, U.I. and Vankova-Kirilova, G. and Vassilopoulos, N. and Wagner, R. and Wang, X. and Wildner, E. and Wolke, M. and Wurtz, J. and Yiu, S.C. and Yoon, S.G. and Young, A.R. and Zanini, L. and Zejma, J. and Zerzion, D. and Zimmer, O. and Zormpa, O. and Zou, Y.},
title = {Particle physics at the European Spallation Source},
journal = {Physics Reports},
year = {2023},
volume = {1023},
pages = {1 – 84},
note = {Cited by: 0; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166173118&doi=10.1016%2fj.physrep.2023.06.001&partnerID=40&md5=feedf485043b97d5412d5259b15898f6},
doi = {10.1016/j.physrep.2023.06.001}
}
|
| Bottoni S, Gamba E, De Gregorio G, Gargano A, Leoni S, Fornal B,
Brancadori N, Ciconali G, Crespi F, Cieplicka-Orynczak N, Iskra L,
Colombi G, Kim Y, Köster U, Michelagnoli C, Dunkel F, Esmaylzadeh A,
Gerhard L, Jolie J, Knafla L, Ley M, Régis J-M, Schomaker K and
Sferrazza M (2023), "Core-proton coupled nature of the 11/2+state in 131Sb probed by lifetime measurements", Journal of Physics: Conference Series. Vol. 2453(1) |
| Abstract: The structure of the 11/21+ state in 131Sb was investigated at the LOHENGRIN spectrometer of Institut Laue-Langevin via neutron-induced fission of 235U and lifetime measurements, yielding T1/2=3(2), at the edge of the sensitivity of the experimental method. This first result for the 11/21+ state half-life in neutron-rich Sb isotopes provides a quadrupole reduced transition probability to the ground state of B(E2)=1.4-0.6+1.5 W.u., very close to the B(E2;21+?01+) in 130Sn. Realistic shell-model calculations reproduce well both the experimental level scheme of 131Sb and the B(E2;11/21+?7/21+) value, indicting a dominant 2+(130Sn) -pg7/2 core-proton coupled configuration for the 11/21+ state. © Published under licence by IOP Publishing Ltd. |
BibTeX:
@conference{Bottoni2023,
author = {Bottoni, S. and Gamba, E.R. and De Gregorio, G. and Gargano, A. and Leoni, S. and Fornal, B. and Brancadori, N. and Ciconali, G. and Crespi, F.C.L. and Cieplicka-Orynczak, N. and Iskra, L.W. and Colombi, G. and Kim, Y.H. and Köster, U. and Michelagnoli, C. and Dunkel, F. and Esmaylzadeh, A. and Gerhard, L. and Jolie, J. and Knafla, L. and Ley, M. and Régis, J.-M. and Schomaker, K. and Sferrazza, M.},
editor = {Gargano A. and De Gregorio G. and Coraggio L. and Itaco N.},
title = {Core-proton coupled nature of the 11/2+state in 131Sb probed by lifetime measurements},
journal = {Journal of Physics: Conference Series},
year = {2023},
volume = {2453},
number = {1},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85152890842&doi=10.1088%2f1742-6596%2f2453%2f1%2f012028&partnerID=40&md5=b0ff79b659538a4e96fc673b3d25df3d},
doi = {10.1088/1742-6596/2453/1/012028}
}
|
| Bottoni S, Gamba E, De Gregorio G, Gargano A, Leoni S, Fornal B,
Brancadori N, Ciconali G, Crespi F, Cieplicka-Oryńczak N, Iskra Ł,
Colombi G, Kim Y, Köster U, Michelagnoli C, Dunkel F, Esmaylzadeh A,
Gerhard L, Jolie J, Knafla L, Ley M, Régis J-M, Schomaker K and
Sferrazza M (2023), "Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb", Physical Review C. Vol. 107(1) |
| Abstract: The lifetime of the 11/21+ state in the Sb131 nucleus was measured at the LOHENGRIN spectrometer of the Institut Laue-Langevin via neutron-induced fission of U235 using γ-ray fast-timing techniques. The obtained value of T1/2=3(2) ps, at the edge of the sensitivity of the experimental method, is the first result for the 11/21+ state half-life in neutron-rich Sb isotopes. The corresponding quadrupole reduced transition probability to the ground state is B(E2)=1.4-0.6+1.5W.u., indicating a noncollective nature of this state. Realistic shell-model calculations performed in a large valence space reproduce well the experimental value and point to a dominant 2+(Sn130) - πg7/2 configuration for the 11/21+ state, as expected in a weak-coupling scenario. At the same time, the sum of the quadrupole strength of the multiplet states is predicted to exceed the one of the Sn130 core as a consequence of the equal contribution of the proton and the proton-neutron quadrupole matrix elements, pointing to possible development of collectivity already in the close neighborhood of Sn132. © 2023 American Physical Society. |
BibTeX:
@article{Bottoni2023,
author = {Bottoni, S. and Gamba, E.R. and De Gregorio, G. and Gargano, A. and Leoni, S. and Fornal, B. and Brancadori, N. and Ciconali, G. and Crespi, F.C.L. and Cieplicka-Oryńczak, N. and Iskra, Ł.W.W. and Colombi, G. and Kim, Y.H. and Köster, U. and Michelagnoli, C. and Dunkel, F. and Esmaylzadeh, A. and Gerhard, L. and Jolie, J. and Knafla, L. and Ley, M. and Régis, J.-M. and Schomaker, K. and Sferrazza, M.},
title = {Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in Sb 131},
journal = {Physical Review C},
year = {2023},
volume = {107},
number = {1},
note = {Cited by: 1},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147554106&doi=10.1103%2fPhysRevC.107.014322&partnerID=40&md5=1c698a2531d2c58b21ead93c74552086},
doi = {10.1103/PhysRevC.107.014322}
}
|
| Clément E, Lemasson A, Rejmund M, Jacquot B, Ralet D, Michelagnoli
C, Barrientos D, Bednarczyk P, Benzoni G, Boston A, Bracco A,
Cederwall B, Ciemala M, Collado J, Crespi F, Domingo-Pardo C,
Dudouet J, Eberth H, De France G, Gadea A, Gonzalez V, Gottardo A,
Harkness L, Hess H, Jungclaus A, Kaşkaş A, Korten W, Lenzi S, Leoni
S, Ljungvall J, Menegazzo R, Mengoni D, Million B, Napoli D, Nyberg
J, Podolyak Z, Pullia A, Quintana Arnés B, Recchia F, Redon N,
Reiter P, D.salsac M, Sanchis E, Şenyiǧit M, Siciliano M, Sohler D,
Stezowski O, Theisen C and Valiente Dobón J (2023), "Spectroscopic quadrupole moments in 124Xe", Physical Review C. Vol. 107(1) |
| Abstract: Background: The Xe isotopic chain with four valence protons above the Z=50 shell closure is an ideal laboratory for the study of the evolution of nuclear deformation. At the N=82 shell closure, Xe136 presents all characteristics of a doubly closed shell nucleus with a spherical shape. In the very neutron-deficient isotopes close to N=50, the α-decay chain of Xe was investigated to probe the radioactive decay properties near the drip-line and the magicity of Sn100. Additionally, the Xe isotopes present higher order symmetries in the nuclear deformation such as the octupole degree of freedom near N=60 and N=90 or O(6) symmetry in stable isotopes. Purpose: The relevance of the O(6) symmetry has been investigated by measuring the spectroscopic quadrupole moment of the first excited states in Xe124. In the O(6) symmetry limit, the spectroscopic quadrupole moment of collective states is expected to be null. Method: A stable Xe124 beam with energies of 4.03A MeV and 4.11A MeV was used to bombard a natW target at the GANIL facility. Excited states were populated via the safe Coulomb excitation reaction. The collision of the heavy ions with a large Z at low energy make this reaction sensitive to the diagonal E2 matrix element of the excited states. The recoils were detected in the VAMOS++ magnetic spectrometer and the γ rays in the AGATA tracking array. The least squares fitting code gosia was used for the analysis to extract both E2 and M1 transitional and E2 diagonal matrix elements. Results: The rotational ground state band was populated up to the 81+ state as well as the 22+ and 42+ states. Using high precision spectroscopic data to constrain the gosia fit, the spectroscopic quadrupole moments of the 21+, 41+, and 61+ states were determined for the first time. Conclusions: The spectroscopic quadrupole moments were found to be negative, large, and constant in the ground state band underlining the prolate axially deformed ground state band of Xe124. The present experimental data confirm that the O(6) symmetry is substantially broken in Xe124. © 2023 American Physical Society. |
BibTeX:
@article{Clément2023,
author = {Clément, E. and Lemasson, A. and Rejmund, M. and Jacquot, B. and Ralet, D. and Michelagnoli, C. and Barrientos, D. and Bednarczyk, P. and Benzoni, G. and Boston, A.J. and Bracco, A. and Cederwall, B. and Ciemala, M. and Collado, J. and Crespi, F. and Domingo-Pardo, C. and Dudouet, J. and Eberth, H.J. and De France, G. and Gadea, A. and Gonzalez, V. and Gottardo, A. and Harkness, L. and Hess, H. and Jungclaus, A. and Kaşkaş, A. and Korten, W. and Lenzi, S.M. and Leoni, S. and Ljungvall, J. and Menegazzo, R. and Mengoni, D. and Million, B. and Napoli, D.R. and Nyberg, J. and Podolyak, Zs. and Pullia, A. and Quintana Arnés, B. and Recchia, F. and Redon, N. and Reiter, P. and D.salsac, M. and Sanchis, E. and Şenyiǧit, M. and Siciliano, M. and Sohler, D. and Stezowski, O. and Theisen, C. and Valiente Dobón, J.J.},
title = {Spectroscopic quadrupole moments in Xe 124},
journal = {Physical Review C},
year = {2023},
volume = {107},
number = {1},
note = {Cited by: 3; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147566946&doi=10.1103%2fPhysRevC.107.014324&partnerID=40&md5=73ddf4db2ae568891f2eb390357aecdd},
doi = {10.1103/PhysRevC.107.014324}
}
|
| Dhanmeher K, Bodek K, Choi J, De Keukeleere L, Engler M, Gupta G, Kozela A, Łojek K, Pysz K, Ries D, Young A, Rozpȩdzik D, Severijns N, Soldner T, Yazdandoost N and Zejma J (2023), "BRAND — A detection system for β-decay correlation measurement", Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 1048 |
| Abstract: The BRAND experiment aims at the search of Beyond Standard Model (BSM) physics via measurement of exotic components of the weak interaction. For this purpose, eleven correlation coefficients of neutron β-decay will be measured simultaneously. The BRAND detection system is oriented for the registration of charged products of β-decay of polarized, free neutrons. With the measurement of the four-momenta of electron and proton, the complete kinematic of the decay will be determined. Moreover, the transverse spin component of the electron, which is the crucial observable to probe BSM exotic components of weak interaction, will be measured via Mott scattering. The electron detection system features both tracking and energy measurement capability. It is also responsible for the determination of the electron spin orientation. A challenging detection of low-energy protons from the β-decay is performed with a system, which involves the acceleration and subsequent conversion of protons into bunches of electrons. To test the feasibility of the proposed experimental techniques, a small-scale prototype setup was installed at the cold neutron beam facility PF1B at the Laue-Langevin Institute (ILL) in Grenoble, France. In this contribution, the preliminary results of the commissioning run are presented with an emphasis on the performance of individual parts of the detection system. © 2022 |
BibTeX:
@article{Dhanmeher2023,
author = {Dhanmeher, K. and Bodek, K. and Choi, J. and De Keukeleere, L. and Engler, M. and Gupta, G. and Kozela, A. and Łojek, K. and Pysz, K. and Ries, D. and Young, A.R. and Rozpȩdzik, D. and Severijns, N. and Soldner, T. and Yazdandoost, N. and Zejma, J.},
title = {BRAND—A detection system for β-decay correlation measurement},
journal = {Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
year = {2023},
volume = {1048},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144615854&doi=10.1016%2fj.nima.2022.167955&partnerID=40&md5=407522519c528a0c0d190d25c7430865},
doi = {10.1016/j.nima.2022.167955}
}
|
| Domingo-Pardo C, Babiano-Suarez V, Balibrea-Correa J, Caballero L,
Ladarescu I, Lerendegui-Marco J, Tain J, Tarifeño-Saldivia A, Aberle
O, Alcayne V, Altieri S, Amaducci S, Andrzejewski J, Bacak M,
Beltrami C, Bennett S, Bernardes A, Berthoumieux E, Boromiza M,
Bosnar D, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Casanovas A,
Cerutti F, Cescutti G, Chasapoglou S, Chiaveri E, Chiera N,
Colombetti P, Colonna N, Camprini PC, Cortés G,
A. Cortés-Giraldo M, Cosentino L, Cristallo S, Dellmann S, Di
Castro M, Di Maria S, Diakaki M, Dietz M, Dressler R, Dupont E,
Durán I, Eleme Z, Fargier S, Fernández B, Fernández-Domínguez B,
Finocchiaro P, Fiore S, García-Infantes F, Gawlik-Ramięga A, Gervino
G, Gilardoni S, González-Romero E, Guerrero C, Gunsing F, Gustavino
C, Heyse J, Hillman W, Jenkins D, Jericha E, Junghans A, Kadi Y,
Kaperoni K, Käppeler F, Kaur G, Kimura A, Knapová I, Köster U,
Kokkoris M, Krtička M, Kyritsis N, Lederer-Woods C, Lerner G, Manna
A, Martínez T, Masi A, Massimi C, Mastinu P, Mastromarco M, Maugeri
E, Mazzone A, Mendoza E, Mengoni A, Milazzo P, Mönch I, Mucciola R,
Murtas F, Musacchio-Gonzalez E, Musumarra A, Negret A, Pérez de Rada
A, Pérez-Maroto P, Patronis N, Pavón-Rodríguez J, Pellegriti M,
Perkowski J, Petrone C, Pirovano E, Plaza J, Pomp S, Porras I,
Praena J, Quesada J, Reifarth R, Rochman D, Romanets Y, Rubbia C,
Sánchez A, Sabaté-Gilarte M, Schillebeeckx P, Schumann D, Sekhar A,
Smith A, Sosnin N, Stamati M, Sturniolo A, Tagliente G, Tarrío D,
Torres-Sánchez P, Turko J, Urlass S, Vagena E, Valenta S, Variale V,
Vaz P, Vecchio G, Vescovi D, Vlachoudis V, Vlastou R, Wallner T,
Woods P, Wright T, Zarrella R and Žugec P (2023), "Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF", European Physical Journal A. Vol. 59(1) |
| Abstract: This article presents a few selected developments and future ideas related to the measurement of (n, γ) data of astrophysical interest at CERN n_TOF. The MC-aided analysis methodology for the use of low-efficiency radiation detectors in time-of-flight neutron-capture measurements is discussed, with particular emphasis on the systematic accuracy. Several recent instrumental advances are also presented, such as the development of total-energy detectors with γ-ray imaging capability for background suppression, and the development of an array of small-volume organic scintillators aimed at exploiting the high instantaneous neutron-flux of EAR2. Finally, astrophysics prospects related to the intermediate i neutron-capture process of nucleosynthesis are discussed in the context of the new NEAR activation area. © 2023, The Author(s). |
BibTeX:
@article{Domingo-Pardo2023,
author = {Domingo-Pardo, C. and Babiano-Suarez, V. and Balibrea-Correa, J. and Caballero, L. and Ladarescu, I. and Lerendegui-Marco, J. and Tain, J.L. and Tarifeño-Saldivia, A. and Aberle, O. and Alcayne, V. and Altieri, S. and Amaducci, S. and Andrzejewski, J. and Bacak, M. and Beltrami, C. and Bennett, S. and Bernardes, A.P. and Berthoumieux, E. and Boromiza, M. and Bosnar, D. and Caamaño, M. and Calviño, F. and Calviani, M. and Cano-Ott, D. and Casanovas, A. and Cerutti, F. and Cescutti, G. and Chasapoglou, S. and Chiaveri, E. and Chiera, N.M. and Colombetti, P. and Colonna, N. and Camprini, P. Console and Cortés, G. and A. Cortés-Giraldo, M. and Cosentino, L. and Cristallo, S. and Dellmann, S. and Di Castro, M. and Di Maria, S. and Diakaki, M. and Dietz, M. and Dressler, R. and Dupont, E. and Durán, I. and Eleme, Z. and Fargier, S. and Fernández, B. and Fernández-Domínguez, B. and Finocchiaro, P. and Fiore, S. and García-Infantes, F. and Gawlik-Ramięga, A. and Gervino, G. and Gilardoni, S. and González-Romero, E. and Guerrero, C. and Gunsing, F. and Gustavino, C. and Heyse, J. and Hillman, W. and Jenkins, D.G. and Jericha, E. and Junghans, A. and Kadi, Y. and Kaperoni, K. and Käppeler, F. and Kaur, G. and Kimura, A. and Knapová, I. and Köster, U. and Kokkoris, M. and Krtička, M. and Kyritsis, N. and Lederer-Woods, C. and Lerner, G. and Manna, A. and Martínez, T. and Masi, A. and Massimi, C. and Mastinu, P. and Mastromarco, M. and Maugeri, E.A. and Mazzone, A. and Mendoza, E. and Mengoni, A. and Milazzo, P.M. and Mönch, I. and Mucciola, R. and Murtas, F. and Musacchio-Gonzalez, E. and Musumarra, A. and Negret, A. and Pérez de Rada, A. and Pérez-Maroto, P. and Patronis, N. and Pavón-Rodríguez, J.A. and Pellegriti, M.G. and Perkowski, J. and Petrone, C. and Pirovano, E. and Plaza, J. and Pomp, S. and Porras, I. and Praena, J. and Quesada, J.M. and Reifarth, R. and Rochman, D. and Romanets, Y. and Rubbia, C. and Sánchez, A. and Sabaté-Gilarte, M. and Schillebeeckx, P. and Schumann, D. and Sekhar, A. and Smith, A.G. and Sosnin, N.V. and Stamati, M. and Sturniolo, A. and Tagliente, G. and Tarrío, D. and Torres-Sánchez, P. and Turko, J. and Urlass, S. and Vagena, E. and Valenta, S. and Variale, V. and Vaz, P. and Vecchio, G. and Vescovi, D. and Vlachoudis, V. and Vlastou, R. and Wallner, T. and Woods, P.J. and Wright, T. and Zarrella, R. and Žugec, P.},
title = {Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF},
journal = {European Physical Journal A},
year = {2023},
volume = {59},
number = {1},
note = {Cited by: 0; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147023322&doi=10.1140%2fepja%2fs10050-022-00876-7&partnerID=40&md5=fe5895b31c62ac416e468d8f99d4faf7},
doi = {10.1140/epja/s10050-022-00876-7}
}
|
| Fougères C, de Oliveira Santos F, José J, Michelagnoli C, Clément
E, Kim YH, Lemasson A, Guimarães V, Barrientos D, Bemmerer D,
Benzoni G, Boston AJ, Böttger R, Boulay F, Bracco A, Čeliković I,
Cederwall B, Ciemala M, Delafosse C, Domingo-Pardo C, Dudouet J,
Eberth J, Fülöp Z, González V, Gottardo A, Goupil J, Hess H,
Jungclaus A, Kaşkaş A, Korichi A, Lenzi SM, Leoni S, Li H, Ljungvall
J, Lopez-Martens A, Menegazzo R, Mengoni D, Million B, Mrázek J,
Napoli DR, Navin A, Nyberg J, Podolyák Z, Pullia A, Quintana B,
Ralet D, Redon N, Reiter P, Rezynkina K, Saillant F, Salsac M-D,
Sánchez-Benítez AM, Sanchis E, Şenyiğit M, Siciliano M, Smirnova NA,
Sohler D, Stanoiu M, Theisen C, Valiente-Dobón JJ, Ujić P and
Zielińska M (2023), "Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes", Nature Communications. Vol. 14(1) |
| Abstract: Classical novae are thermonuclear explosions in stellar binary systems, and important sources of 26Al and 22Na. While γ rays from the decay of the former radioisotope have been observed throughout the Galaxy, 22Na remains untraceable. Its half-life (2.6 yr) would allow the observation of its 1.275 MeV γ-ray line from a cosmic source. However, the prediction of such an observation requires good knowledge of its nucleosynthesis. The 22Na(p, γ)23Mg reaction remains the only source of large uncertainty about the amount of 22Na ejected. Its rate is dominated by a single resonance on the short-lived state at 7785.0(7) keV in 23Mg. Here, we propose a combined analysis of particle-particle correlations and velocity-difference profiles to measure femtosecond nuclear lifetimes. The application of this method to the study of the 23Mg states, places strong limits on the amount of 22Na produced in novae and constrains its detectability with future space-borne observatories. © 2023, This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply. |
BibTeX:
@article{Fougères2023,
author = {Fougères, Chloé and de Oliveira Santos, François and José, Jordi and Michelagnoli, Caterina and Clément, Emmanuel and Kim, Yung Hee and Lemasson, Antoine and Guimarães, Valdir and Barrientos, Diego and Bemmerer, Daniel and Benzoni, Giovanna and Boston, Andrew J. and Böttger, Roman and Boulay, Florent and Bracco, Angela and Čeliković, Igor and Cederwall, Bo and Ciemala, Michał and Delafosse, Clément and Domingo-Pardo, César and Dudouet, Jérémie and Eberth, Jürgen and Fülöp, Zsolt and González, Vicente and Gottardo, Andrea and Goupil, Johan and Hess, Herbert and Jungclaus, Andrea and Kaşkaş, Ayşe and Korichi, Amel and Lenzi, Silvia M. and Leoni, Silvia and Li, Hongjie and Ljungvall, Joa and Lopez-Martens, Araceli and Menegazzo, Roberto and Mengoni, Daniele and Million, Benedicte and Mrázek, Jaromír and Napoli, Daniel R. and Navin, Alahari and Nyberg, Johan and Podolyák, Zsolt and Pullia, Alberto and Quintana, Begoña and Ralet, Damien and Redon, Nadine and Reiter, Peter and Rezynkina, Kseniia and Saillant, Frédéric and Salsac, Marie-Delphine and Sánchez-Benítez, Angel M. and Sanchis, Enrique and Şenyiğit, Menekşe and Siciliano, Marco and Smirnova, Nadezda A. and Sohler, Dorottya and Stanoiu, Mihai and Theisen, Christophe and Valiente-Dobón, Jose J. and Ujić, Predrag and Zielińska, Magdalena},
title = {Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes},
journal = {Nature Communications},
year = {2023},
volume = {14},
number = {1},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85169759681&doi=10.1038%2fs41467-023-40121-3&partnerID=40&md5=887c7e7028a78daa6dc1e3f09c25b8e9},
doi = {10.1038/s41467-023-40121-3}
}
|
| Rząca-Urban T, Urban W, Blanc A, Jentschel M, Mutti P, Köster U,
De France G, Simpson G and Ur C (2023), "Low-spin excitations in 95Zr", Physical Review C. Vol. 108(1) |
| Abstract: The low-spin structure of the Zr95 nucleus was investigated at Institut Laue-Langevin (Grenoble) by employing three complementary methods: Either cold-neutron capture on Zr94 or cold-neutron-induced fission of U235, both using the highly efficient EXILL array of high-purity germanium (HPGe) detectors, or β decay of mass-separated Y95 ions at the focal point of the Lohengrin fission-fragment separator. Together 21 new levels and 44 new transitions were placed in the level scheme. Spin-parity assignments to most of the levels in Zr95 were significantly improved. © 2023 American Physical Society. |
BibTeX:
@article{Rząca-Urban2023,
author = {Rząca-Urban, T. and Urban, W. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Low-spin excitations in Zr 95},
journal = {Physical Review C},
year = {2023},
volume = {108},
number = {1},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166766178&doi=10.1103%2fPhysRevC.108.014324&partnerID=40&md5=f4fff8712e6a5acc05692038259e07d8},
doi = {10.1103/PhysRevC.108.014324}
}
|
| Wiśniewski J, Urban W, Rząca-Urban T, Sieja K, Blanc A, Jentschel
M, Micheagnoli C, Mutti P, Köster U, De France G, Simpson G and Ur C
(2023), "Structure of N=56 isotones with 36 ≤ Z ≤ 42 protons", Physical Review C. Vol. 108(2) |
| Abstract: Excited levels in Kr92, Zr96, and Mo98 nuclei were reinvestigated using high-statistics multiple-γ coincidence data measured with the EXILL and FIPPS Ge arrays, following neutron-induced fission of U235 and neutron capture on a Mo97 target, respectively. The experimental goal was to search for new levels, especially with low spins, as well as to firm up spin-parity assignments to known levels. In total of 16 new levels with 64 new or corrected decays and 35 new or improved spin-parity assignments were observed in the three nuclei. We also performed large-scale shell-model calculations to learn more about the microscopic structure of levels in these nuclei. The evolution of collectivity in N=56 isotones is discussed, stressing the important role of various single-particle excitations, in particular of the πg9/2 orbital, in the shape evolution in the region. © 2023 American Physical Society. |
BibTeX:
@article{Wiśniewski2023,
author = {Wiśniewski, J. and Urban, W. and Rząca-Urban, T. and Sieja, K. and Blanc, A. and Jentschel, M. and Micheagnoli, C. and Mutti, P. and Köster, U. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Structure of N=56 isotones with 36≤Z≤42 protons},
journal = {Physical Review C},
year = {2023},
volume = {108},
number = {2},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85167986498&doi=10.1103%2fPhysRevC.108.024302&partnerID=40&md5=e6e2474b9e58efbc31717ec893ef1bb1},
doi = {10.1103/PhysRevC.108.024302}
}
|
| Abel C, Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu P-J, Clément B, Crawford C, Daum M, Emmenegger S, Ferraris-Bouchez L, Fertl M, Flaux P, Fratangelo A, Griffith W, Grujić Z, Harris P, Hayen L, Hild N, Kasprzak M, Kirch K, Knowles P, Koch H-C, Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Mohanmurthy P, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Prashanth P, Quéméner G, Rawlik M, Ries D, Rebreyend D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Severijns N, Thorne J, Virot R, Weis A, Wursten E, Wyszynski G, Zejma J and Zsigmond G (2022), "Mapping of the magnetic field to correct systematic effects in a neutron electric dipole moment experiment", Physical Review A. Vol. 106(3) |
| Abstract: Experiments dedicated to the measurement of the electric dipole moment of the neutron require outstanding control of the magnetic-field uniformity. The neutron electric dipole moment (nEDM) experiment at the Paul Scherrer Institute uses a Hg199 co-magnetometer to precisely monitor temporal magnetic-field variations. This co-magnetometer, in the presence of field nonuniformity, is, however, responsible for the largest systematic effect of this measurement. To evaluate and correct that effect, offline measurements of the field nonuniformity were performed during mapping campaigns in 2013, 2014, and 2017. We present the results of these campaigns, and the improvement the correction of this effect brings to the neutron electric dipole moment measurement. © 2022 American Physical Society. |
BibTeX:
@article{Abel2022,
author = {Abel, C. and Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Chanel, E. and Chiu, P.-J. and Clément, B. and Crawford, C.B. and Daum, M. and Emmenegger, S. and Ferraris-Bouchez, L. and Fertl, M. and Flaux, P. and Fratangelo, A. and Griffith, W.C. and Grujić, Z.D. and Harris, P.G. and Hayen, L. and Hild, N. and Kasprzak, M. and Kirch, K. and Knowles, P. and Koch, H.-C. and Koss, P.A. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mohanmurthy, P. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pignol, G. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Ries, D. and Rebreyend, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Thorne, J.A. and Virot, R. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zsigmond, G.},
title = {Mapping of the magnetic field to correct systematic effects in a neutron electric dipole moment experiment},
journal = {Physical Review A},
year = {2022},
volume = {106},
number = {3},
note = {Cited by: 0; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139593875&doi=10.1103%2fPhysRevA.106.032808&partnerID=40&md5=3944aa56301a99ea38d5acf814e9c22f},
doi = {10.1103/PhysRevA.106.032808}
}
|
| Bodek K, Choi J, De Keukeleere L, Dhanmeher K, Engler M, Gupta G,
Kozela A, Lojek K, Pysz K, Ries D, Rozpedzik D, Severijns N, Soldner
T, Yazdandoost N, Young A and Zejma J (2022), "Search for BSM physics with neutron beta decay in the BRAND project", Proceedings of Science. Vol. 380 |
| Abstract: Neutron and nuclear beta decay correlation coefficients are sensitive to the exotic scalar and tensor interactions hypotheses that are beyond the Standard Model (BSM). The BRAND project aims at a test of the Lorentz structure of weak interaction in neutron decay by precision measurements of yet unexplored transverse polarization of electrons in correlation with the neutron spin and electron and recoil proton momenta. The experiment will simultaneously measure eleven neutron correlation coefficients (a, A, B, D, H, L, N, R, S, U, V), where seven of them (H L, N, R, S, U and V depend on the transverse electron polarization. Five of these correlations: H, L, S, U and V were never attempted experimentally before. The expected ultimate sensitivity of the proposed experiment with respect to BSM couplings will be comparable to that of the ongoing and planned correlation measurements in neutron and nuclear beta decays but offers completely different systematics and additional sensitivity to imaginary parts of the scalar and tensor couplings. In the presentation, an overview of the project, physical motivation and applied experimental techniques were reported. The results of the first pilot run of the experiment performed recently using the cold neutron beam line PF1B at the Laue-Langevin Institute, Grenoble, France were presented, with an emphasis on the challenges of the proposed proton detection technique. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0) |
BibTeX:
@conference{Bodek2022,
author = {Bodek, K. and Choi, J. and De Keukeleere, L. and Dhanmeher, K. and Engler, M. and Gupta, G. and Kozela, A. and Lojek, K. and Pysz, K. and Ries, D. and Rozpedzik, D. and Severijns, N. and Soldner, T. and Yazdandoost, N. and Young, A.R. and Zejma, J.},
title = {Search for BSM physics with neutron beta decay in the BRAND project},
journal = {Proceedings of Science},
year = {2022},
volume = {380},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131693556&partnerID=40&md5=35dbbb2456ad249f5840951c51d09b34}
}
|
| Bodek K, Choi J, Dhanmeher K, De Keukeleere L, Engler M, Gupta G, Kozela A, Łojek K, Pysz K, Ries D, Young A, Rozpędzik D, Severijns N, Soldner T, Yazdandoost N and Zejma J (2022), "Mott-polarimeter for electrons from neutron decay in BRAND experiment", Proceedings of Science. Vol. 380 |
| Abstract: The BRAND experiment aims at the search of Beyond Standard Model (BSM) physics via measurement of exotic components of weak interaction. For this purpose the eleven correlation coefficients of the neutron β decay will be measured simultaneously. Seven of them: H, L, N, R, S, U and V, are sensitive to the transverse polarization of electrons from free neutron decay. The correlation coefficients will be derived using Mott polarimetry and completely determined kinematics of products from the polarized neutron β decay. For this aim the beam of cold polarized neutrons available at the PF1B facility of the ILL, Grenoble will be utilized. The electron detection system features both the tracking and energy measurement capability as well as the Mott polarimetry for determination of the electron spin orientation. The 3D tracking is performed with the use of low density, helium based drift chamber with hexagonal cell structure which is optimised for β-particles. The Mott polarimeter is an integral part of the tracker. It consists of a thin Pb foil installed inside the drift chamber and two plastic scitillators, providing trigger and scattered electron energy measurement. The results of the first pilot run of the BRAND experiment performed in September'20 are reported with the emphasis on the description and the performance of the electron detection system and the Mott polarimeter. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0) |
BibTeX:
@conference{Bodek2022,
author = {Bodek, K. and Choi, J. and Dhanmeher, K. and De Keukeleere, L. and Engler, M. and Gupta, G. and Kozela, A. and Łojek, K. and Pysz, K. and Ries, D. and Young, A.R. and Rozpędzik, D. and Severijns, N. and Soldner, T. and Yazdandoost, N. and Zejma, J.},
title = {Mott-polarimeter for electrons from neutron decay in BRAND experiment},
journal = {Proceedings of Science},
year = {2022},
volume = {380},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131679395&partnerID=40&md5=30797dea89e28e49fc5cb7b35f0fc4db}
}
|
| Hirtz J, Letourneau A, Thulliez L, Ibarra A, Krolas W and Maj A
(2022), "Neutron availability in the Complementary Experiments Hall of the IFMIF-DONES facility", Fusion Engineering and Design. Vol. 179 |
| Abstract: The IFMIF-DONES facility will be dedicated to the irradiation of structural materials planned for the use in future fusion reactors such as DEMO (Demonstration Fusion Power Plant). The potentialities of the IFMIF-DONES facility to complement its principal purpose by other experiments that would open the facility to other communities is addressed in this work. It concerns a study based on simulations to evaluate the neutronic performances of IFMIF-DONES in an hall dedicated to complementary experiments where neutrons can be transported. With the simple beam tube geometry of 4.5 cm entrance diameter studied in this work we have shown that a collimated fast-neutron beam of about 2 1010 n/cm2/s is available in the hall. Adding a moderator in the hall with neutron extraction lines would allow to get thermal neutron beams of about 106-107 n/cm2/s for dedicated experiments. The results show that IFMIF-DONES has the potentialities to be a medium-flux neutron facility for most of the neutron applications. © 2022 |
BibTeX:
@article{Hirtz2022,
author = {Hirtz, J. and Letourneau, A. and Thulliez, L. and Ibarra, A. and Krolas, W. and Maj, A.},
title = {Neutron availability in the Complementary Experiments Hall of the IFMIF-DONES facility},
journal = {Fusion Engineering and Design},
year = {2022},
volume = {179},
note = {Cited by: 1; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128178080&doi=10.1016%2fj.fusengdes.2022.113133&partnerID=40&md5=c3f4632684c76af5def47f806d5bd72a},
doi = {10.1016/j.fusengdes.2022.113133}
}
|
| Kulesz K, Azaryan N, Baranowski M, Chojnacki MJ, Köster U, Lica R,
Pascu SG, Jolivet RB and Kowalska M (2022), "A Thermal Sublimation Generator of 131mXe", Instruments. Vol. 6(4) |
| Abstract: Stable and unstable isotopes of the heavy noble gas xenon find use in various medical applications. However, apart from (Formula presented.) Xe, used for Single Photon Emission Computed Tomography, radioactive isotopes of xenon are currently complicated to obtain in small quantities. With the GAMMA-MRI project in mind, we investigated a thermal sublimation generator of the long-lived excited state (isomer) (Formula presented.) Xe. This production method utilized the decay of (Formula presented.) I, obtained commercially from a hospital supplier in the form of Na (Formula presented.) I powder. Heat treatments of the Na (Formula presented.) I powder and cryogenic trapping of released (Formula presented.) Xe allowed us to collect up to 88% of the produced xenon. Our method provides an isomeric mixture of (Formula presented.) Xe and (Formula presented.) Xe. With improvements in scalability and chemical purification, this method could be a cost-effective source of (Formula presented.) Xe for small-scale experiments. © 2022 by the authors. |
BibTeX:
@article{Kulesz2022,
author = {Kulesz, Karolina and Azaryan, Nikolay and Baranowski, Mikołaj and Chojnacki, Mateusz Jerzy and Köster, Ulli and Lica, Razvan and Pascu, Sorin Gabriel and Jolivet, Renaud Blaise and Kowalska, Magdalena},
title = {A Thermal Sublimation Generator of 131mXe},
journal = {Instruments},
year = {2022},
volume = {6},
number = {4},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144686214&doi=10.3390%2finstruments6040076&partnerID=40&md5=147a6dcf1eec1358bd61e4d52427e3e0},
doi = {10.3390/instruments6040076}
}
|
| Pérez-Vidal R, Gadea A, Domingo-Pardo C, Gargano A, Valiente-Dobón
J, Clément E, Lemasson A, Coraggio L, Siciliano M, Szilner S, Bast
M, Braunroth T, Collado J, Corina A, Dewald A, Doncel M, Dudouet J,
De France G, Fransen C, González V, Hüyük T, Jacquot B, John P,
Jungclaus A, Kim Y, Korichi A, Labiche M, Lenzi S, Li H, Ljungvall
J, López-Martens A, Mengoni D, Michelagnoli C, Müller-Gatermann C,
Napoli D, Navin A, Quintana B, Ramos D, Rejmund M, Sanchis E,
Simpson J, Stezowski O, Wilmsen D, Zielińska M, Boston A, Barrientos
D, Bednarczyk P, Benzoni G, Birkenbach B, Boston H, Bracco A,
Cederwall B, Cullen D, Didierjean F, Eberth J, Gottardo A, Goupil J,
Harkness-Brennan L, Hess H, Judson D, Kaşkaş A, Korten W, Leoni S,
Menegazzo R, Million B, Nyberg J, Podolyak Z, Pullia A, Ralet D,
Recchia F, Reiter P, Rezynkina K, Salsac M, Şenyiǧit M, Sohler D,
Theisen C and Verney D (2022), "Evidence of Partial Seniority Conservation in the πg9/2 Shell for the N=50 Isotones", Physical Review Letters. Vol. 129(11) |
| Abstract: The reduced transition probabilities for the 41+→21+ and 21+→01+ transitions in Mo92 and Ru94 and for the 41+→21+ and 61+→41+ transitions in Zr90 have been determined in this experiment making use of a multinucleon transfer reaction. These results have been interpreted on the basis of realistic shell-model calculations in the f5/2, p3/2, p1/2, and g9/2 proton valence space. Only the combination of extensive lifetime information and large scale shell-model calculations allowed the extent of the seniority conservation in the N=50 g9/2 orbital to be understood. The conclusion is that seniority is largely conserved in the first πg9/2 orbital. © 2022 authors. Published by the American Physical Society. |
BibTeX:
@article{Pérez-Vidal2022,
author = {Pérez-Vidal, R.M. and Gadea, A. and Domingo-Pardo, C. and Gargano, A. and Valiente-Dobón, J.J. and Clément, E. and Lemasson, A. and Coraggio, L. and Siciliano, M. and Szilner, S. and Bast, M. and Braunroth, T. and Collado, J. and Corina, A. and Dewald, A. and Doncel, M. and Dudouet, J. and De France, G. and Fransen, C. and González, V. and Hüyük, T. and Jacquot, B. and John, P.R. and Jungclaus, A. and Kim, Y.H. and Korichi, A. and Labiche, M. and Lenzi, S. and Li, H. and Ljungvall, J. and López-Martens, A. and Mengoni, D. and Michelagnoli, C. and Müller-Gatermann, C. and Napoli, D.R. and Navin, A. and Quintana, B. and Ramos, D. and Rejmund, M. and Sanchis, E. and Simpson, J. and Stezowski, O. and Wilmsen, D. and Zielińska, M. and Boston, A.J. and Barrientos, D. and Bednarczyk, P. and Benzoni, G. and Birkenbach, B. and Boston, H.C. and Bracco, A. and Cederwall, B. and Cullen, D.M. and Didierjean, F. and Eberth, J. and Gottardo, A. and Goupil, J. and Harkness-Brennan, L.J. and Hess, H. and Judson, D.S. and Kaşkaş, A. and Korten, W. and Leoni, S. and Menegazzo, R. and Million, B. and Nyberg, J. and Podolyak, Zs. and Pullia, A. and Ralet, D. and Recchia, F. and Reiter, P. and Rezynkina, K. and Salsac, M.D. and Şenyiǧit, M. and Sohler, D. and Theisen, Ch. and Verney, D.},
title = {Evidence of Partial Seniority Conservation in the πg9 /2 Shell for the N=50 Isotones},
journal = {Physical Review Letters},
year = {2022},
volume = {129},
number = {11},
note = {Cited by: 5; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138248107&doi=10.1103%2fPhysRevLett.129.112501&partnerID=40&md5=778eaa0fa6a3207ded96dc9ef40eff09},
doi = {10.1103/PhysRevLett.129.112501}
}
|
| Si M, Lozeva R, Naïdja H, Blanc A, Daugas J-M, Didierjean F,
Duchêne G, Köster U, Kurtukian-Nieto T, Le Blanc F, Mutti P,
Ramdhane M and Urban W (2022), "New β-decay spectroscopy of the 137Te nucleus", Physical Review C. Vol. 106(1) |
| Abstract: Background: Nuclear spectroscopy of neutron-rich isotopes provides important information on their nuclear structure and has a valuable impact on the modeling of the r-process path. Particularly interesting are nuclei close to doubly-magic species, e.g., Sn132, with only several valence particles. Such is the barely explored I137 nucleus, investigated here in detail.Purpose: To establish excited states in I137, β decay of the Te137 ground state is studied. In addition, the unknown β-delayed neutron-emission channel of Te137 to I136 is inspected. Search for levels and for candidates for Gamow-Teller and first-forbidden transitions between the mother nucleus and excited states in the daughter nucleus is conducted within the experimental observations.Methods: β-delayed γ-ray spectroscopy is employed to study excited states in I137. The nucleus is populated in the decay of a mass-separated beam of Te137, produced in neutron-induced fission of U235. Results: The new level scheme of I137 populated in β decay is established. The half-life T1/2 of Te137 is determined to be 2.46(5) s. The β-delayed neutron-emission probability Pn value of Te137 is deduced as a lower limit to be 2.63(85)%. Conclusions: The experimental results are an important input to the theoretical description of nuclei in the region, being well interpreted within large-scale shell model calculations, and provide essential information on the first-forbidden transitions beyond N=82 and Z=50. © 2022 American Physical Society. |
BibTeX:
@article{Si2022,
author = {Si, M. and Lozeva, R. and Naïdja, H. and Blanc, A. and Daugas, J.-M. and Didierjean, F. and Duchêne, G. and Köster, U. and Kurtukian-Nieto, T. and Le Blanc, F. and Mutti, P. and Ramdhane, M. and Urban, W.},
title = {New β-decay spectroscopy of the Te 137 nucleus},
journal = {Physical Review C},
year = {2022},
volume = {106},
number = {1},
note = {Cited by: 1; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135057216&doi=10.1103%2fPhysRevC.106.014302&partnerID=40&md5=06305505c2297ee76578e4c7dc4f0929},
doi = {10.1103/PhysRevC.106.014302}
}
|
| Abel C, Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu
P-J, Crawford C, Daum M, Dinani R, Emmenegger S, Flaux P,
Ferraris-Bouchez L, Griffith W, Grujić Z, Hild N, Kirch K, Koch H-C,
Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Leredde A,
Mohanmurthy P, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Rawlik
M, Rebreyend D, Rienäcker I, Ries D, Roccia S, Rozpedzik D,
Schmidt-Wellenburg P, Severijns N, Thorne J, Weis A, Wursten E,
Zejma J and Zsigmond G (2021), "A search for neutron to mirror-neutron oscillations using the nEDM apparatus at PSI", Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Vol. 812 |
| Abstract: It has been proposed that there could be a mirror
copy of the standard model particles, restoring the parity symmetry
in the weak interaction on the global level. Oscillations between a
neutral standard model particle, such as the neutron, and its mirror
counterpart could potentially answer various standing issues in
physics today. Astrophysical studies and terrestrial experiments led
by ultracold neutron storage measurements have investigated neutron
to mirror-neutron oscillations and imposed constraints on the
theoretical parameters. Recently, further analysis of these
ultracold neutron storage experiments has yielded statistically
significant anomalous signals that may be interpreted as neutron to
mirror-neutron oscillations, assuming nonzero mirror magnetic
fields. The neutron electric dipole moment collaboration performed a
dedicated search at the Paul Scherrer Institute and found no
evidence of neutron to mirror-neutron oscillations. Thereby, the
following new lower limits on the oscillation time were obtained:
τnn>352 s at B′=0 (95% C.L.), τnn>6s for 0.4μT |
BibTeX:
@article{Abel2021,
author = {Abel, C. and Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Chanel, E. and Chiu, P.-J. and Crawford, C. and Daum, M. and Dinani, R.T. and Emmenegger, S. and Flaux, P. and Ferraris-Bouchez, L. and Griffith, W.C. and Grujić, Z.D. and Hild, N. and Kirch, K. and Koch, H.-C. and Koss, P.A. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Leredde, A. and Mohanmurthy, P. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pignol, G. and Rawlik, M. and Rebreyend, D. and Rienäcker, I. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Thorne, J. and Weis, A. and Wursten, E. and Zejma, J. and Zsigmond, G.},
title = {A search for neutron to mirror-neutron oscillations using the nEDM apparatus at PSI},
journal = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
year = {2021},
volume = {812},
note = {Cited by: 22; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100032716&doi=10.1016%2fj.physletb.2020.135993&partnerID=40&md5=e2b46e345e3c1735d88aec1a08d590ac},
doi = {10.1016/j.physletb.2020.135993}
}
|
| Addazi A, Anderson K, Ansell S, Babu K, Barrow J, Baxter D,
Bentley P, Berezhiani Z, Bevilacqua R, Biondi R, Bohm C, Brooijmans
G, Broussard L, Cederc ll J, Crawford C, Dev P, Dijulio D, Dolgov A,
Dunne K, Fierlinger P, Fitzsimmons M, Fomin A, Frost M, Gardiner S,
Gardner S, Galindo-Uribarri A, Geltenbort P, Girmohanta S, Golubev
P, Golubeva E, Greene G, Greenshaw T, Gudkov V, Hall-Wilton R,
Heilbronn L, Herrero-Garcia J, Holley A, Ichikawa G, Ito T, Iverson
E, Johansson T, Jönsson L, Jwa Y-J, Kamyshkov Y, Kanaki K, Kearns E,
Kokai Z, Kerbikov B, Kitaguchi M, Kittelmann T, Klinkby E,
Kobakhidze A, Koerner L, Kopeliovich B, Kozela A, Kudryavtsev V,
Kupsc A, Lee Y, Lindroos M, Makkinje J, Marquez J, Meirose B, Miller
T, Milstead D, Mohapatra R, Morishima T, Muhrer G, Mumm H, Nagamoto
K, Nepomuceno A, Nesti F, Nesvizhevsky V, Nilsson T, Oskarsson A,
Paryev E, Pattie R, Penttil S, Perrey H, Pokotilovski Y,
Potashnikovav I, Ramic K, Redding C, Richard J-M, Ries D, Rinaldi E,
Rizzi N, Rossi N, Ruggles A, Rybolt B, Santoro V, Sarkar U, Saunders
A, Senjanovic G, Serebrov A, Shimizu H, Shrock R, Silverstein S,
Silvermyr D, Snow W, Takibayev A, Tkachev I, Townsend L, Tureanu A,
Varriano L, Vainshtein A, De Vries J, Wagner R, Woracek R, Yamagata
Y, Yiu S, Young A, Zanini L, Zhang Z and Zimmer O (2021), "New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source", Journal of Physics G: Nuclear and Particle Physics. Vol. 48(7) |
| Abstract: The violation of baryon number, is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation. The program will include high-sensitivity searches for processes that violate baryon number by one or two units: free neutron-antineutron oscillation via mixing, neutron-antineutron oscillation via regeneration from a sterile neutron state , and neutron disappearance (n → n′); the effective process of neutron regeneration is also possible. The program can be used to discover and characterize mixing in the neutron, antineutron and sterile neutron sectors. The experiment addresses topical open questions such as the origins of baryogenesis and the nature of dark matter, and is sensitive to scales of new physics substantially in excess of those available at colliders. A goal of the program is to open a discovery window to neutron conversion probabilities (sensitivities) by up to three orders of magnitude compared with previous searches. The opportunity to make such a leap in sensitivity tests should not be squandered. The experiment pulls together a diverse international team of physicists from the particle (collider and low energy) and nuclear physics communities, while also including specialists in neutronics and magnetics. © 2021 The Author(s). Published by IOP Publishing Ltd. |
BibTeX:
@article{Addazi2021,
author = {Addazi, A. and Anderson, K. and Ansell, S. and Babu, K.S. and Barrow, J.L. and Baxter, D.V. and Bentley, P.M. and Berezhiani, Z. and Bevilacqua, R. and Biondi, R. and Bohm, C. and Brooijmans, G. and Broussard, L.J. and Cederc ll, J. and Crawford, C. and Dev, P.S.B. and Dijulio, D.D. and Dolgov, A.D. and Dunne, K. and Fierlinger, P. and Fitzsimmons, M.R. and Fomin, A. and Frost, M.J. and Gardiner, S. and Gardner, S. and Galindo-Uribarri, A. and Geltenbort, P. and Girmohanta, S. and Golubev, P. and Golubeva, E. and Greene, G.L. and Greenshaw, T. and Gudkov, V. and Hall-Wilton, R. and Heilbronn, L. and Herrero-Garcia, J. and Holley, A. and Ichikawa, G. and Ito, T.M. and Iverson, E. and Johansson, T. and Jönsson, L. and Jwa, Y.-J. and Kamyshkov, Y. and Kanaki, K. and Kearns, E. and Kokai, Z. and Kerbikov, B. and Kitaguchi, M. and Kittelmann, T. and Klinkby, E. and Kobakhidze, A. and Koerner, L.W. and Kopeliovich, B. and Kozela, A. and Kudryavtsev, V. and Kupsc, A. and Lee, Y.T. and Lindroos, M. and Makkinje, J. and Marquez, J.I. and Meirose, B. and Miller, T.M. and Milstead, D. and Mohapatra, R.N. and Morishima, T. and Muhrer, G. and Mumm, H.P. and Nagamoto, K. and Nepomuceno, A. and Nesti, F. and Nesvizhevsky, V.V. and Nilsson, T. and Oskarsson, A. and Paryev, E. and Pattie, R.W. and Penttil, S. and Perrey, H. and Pokotilovski, Y.N. and Potashnikovav, I. and Ramic, K. and Redding, C. and Richard, J.-M. and Ries, D. and Rinaldi, E. and Rizzi, N. and Rossi, N. and Ruggles, A. and Rybolt, B. and Santoro, V. and Sarkar, U. and Saunders, A. and Senjanovic, G. and Serebrov, A.P. and Shimizu, H.M. and Shrock, R. and Silverstein, S. and Silvermyr, D. and Snow, W.M. and Takibayev, A. and Tkachev, I. and Townsend, L. and Tureanu, A. and Varriano, L. and Vainshtein, A. and De Vries, J. and Wagner, R. and Woracek, R. and Yamagata, Y. and Yiu, S. and Young, A.R. and Zanini, L. and Zhang, Z. and Zimmer, O.},
title = {New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source},
journal = {Journal of Physics G: Nuclear and Particle Physics},
year = {2021},
volume = {48},
number = {7},
note = {Cited by: 34; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108434027&doi=10.1088%2f1361-6471%2fabf429&partnerID=40&md5=68f407c2382af54008d39c801609827a},
doi = {10.1088/1361-6471/abf429}
}
|
| Ayres N, Ban G, Bienstman L, Bison G, Bodek K, Bondar V, Bouillaud
T, Chanel E, Chen J, Chiu P-J, Clément B, Crawford C, Daum M,
Dechenaux B, Doorenbos C, Emmenegger S, Ferraris-Bouchez L, Fertl M,
Fratangelo A, Flaux P, Goupillière D, Griffith W, Grujic Z, Harris
P, Kirch K, Koss P, Krempel J, Lauss B, Lefort T, Lemière Y, Leredde
A, Meier M, Menu J, Mullins D, Naviliat-Cuncic O, Pais D, Piegsa F,
Pignol G, Quéméner G, Rawlik M, Rebreyend D, Rienäcker I, Ries D,
Roccia S, Ross K, Rozpedzik D, Saenz W, Schmidt-Wellenburg P,
Schnabel A, Severijns N, Shen B, Stapf T, Svirina K, Tavakoli Dinani
R, Touati S, Thorne J, Virot R, Voigt J, Wursten E, Yazdandoost N,
Zejma J and Zsigmond G (2021), "The design of the n2EDM experiment: nEDM Collaboration", European Physical Journal C. Vol. 81(6) |
| Abstract: We present the design of a next-generation experiment, n2EDM, currently under construction at the ultracold neutron source at the Paul Scherrer Institute (PSI) with the aim of carrying out a high-precision search for an electric dipole moment of the neutron. The project builds on experience gained with the previous apparatus operated at PSI until 2017, and is expected to deliver an order of magnitude better sensitivity with provision for further substantial improvements. An overview is of the experimental method and setup is given, the sensitivity requirements for the apparatus are derived, and its technical design is described. © 2021, The Author(s). |
BibTeX:
@article{Ayres2021a,
author = {Ayres, N.J. and Ban, G. and Bienstman, L. and Bison, G. and Bodek, K. and Bondar, V. and Bouillaud, T. and Chanel, E. and Chen, J. and Chiu, P.-J. and Clément, B. and Crawford, C.B. and Daum, M. and Dechenaux, B. and Doorenbos, C.B. and Emmenegger, S. and Ferraris-Bouchez, L. and Fertl, M. and Fratangelo, A. and Flaux, P. and Goupillière, D. and Griffith, W.C. and Grujic, Z.D. and Harris, P.G. and Kirch, K. and Koss, P.A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Leredde, A. and Meier, M. and Menu, J. and Mullins, D.A. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pignol, G. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Rienäcker, I. and Ries, D. and Roccia, S. and Ross, K.U. and Rozpedzik, D. and Saenz, W. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Shen, B. and Stapf, T. and Svirina, K. and Tavakoli Dinani, R. and Touati, S. and Thorne, J. and Virot, R. and Voigt, J. and Wursten, E. and Yazdandoost, N. and Zejma, J. and Zsigmond, G.},
title = {The design of the n2EDM experiment: nEDM Collaboration},
journal = {European Physical Journal C},
year = {2021},
volume = {81},
number = {6},
note = {Cited by: 15; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107738726&doi=10.1140%2fepjc%2fs10052-021-09298-z&partnerID=40&md5=09215d307b0fbb3e270e09b5e450c0a7},
doi = {10.1140/epjc/s10052-021-09298-z}
}
|
| Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu P-J, Crawford C, Daum M, Emmenegger S, Ferraris-Bouchez L, Flaux P, Grujić Z, Harris P, Hild N, Hommet J, Kasprzak M, Kermaïdic Y, Kirch K, Komposch S, Kozela A, Krempel J, Lauss B, Lefort T, Lemiere Y, Leredde A, Mohanmurthy P, Mtchedlishvili A, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Rawlik M, Rebreyend D, Rienäcker I, Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Virot R, Weis A, Wursten E, Zejma J and Zsigmond G (2021), "Data blinding for the nEDM experiment at PSI", European Physical Journal A. Vol. 57(4) |
| Abstract: Psychological bias towards, or away from, prior measurements or theory predictions is an intrinsic threat to any data analysis. While various methods can be used to try to avoid such a bias, e.g. actively avoiding looking at the result, only data blinding is a traceable and trustworthy method that can circumvent the bias and convince a public audience that there is not even an accidental psychological bias. Data blinding is nowadays a standard practice in particle physics, but it is particularly difficult for experiments searching for the neutron electric dipole moment (nEDM), as several cross measurements, in particular of the magnetic field, create a self-consistent network into which it is hard to inject a false signal. We present an algorithm that modifies the data without influencing the experiment. Results of an automated analysis of the data are used to change the recorded spin state of a few neutrons within each measurement cycle. The flexible algorithm may be applied twice (or more) to the data, thus providing the option of sequentially applying various blinding offsets for separate analysis steps with independent teams. The subtle manner in which the data are modified allows one subsequently to adjust the algorithm and to produce a re-blinded data set without revealing the initial blinding offset. The method was designed for the 2015/2016 measurement campaign of the nEDM experiment at the Paul Scherrer Institute. However, it can be re-used with minor modification for the follow-up experiment n2EDM, and may be suitable for comparable projects elsewhere. © 2021, The Author(s). |
BibTeX:
@article{Ayres2021,
author = {Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Chanel, E. and Chiu, P.-J. and Crawford, C.B. and Daum, M. and Emmenegger, S. and Ferraris-Bouchez, L. and Flaux, P. and Grujić, Z. and Harris, P.G. and Hild, N. and Hommet, J. and Kasprzak, M. and Kermaïdic, Y. and Kirch, K. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemiere, Y. and Leredde, A. and Mohanmurthy, P. and Mtchedlishvili, A. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pignol, G. and Rawlik, M. and Rebreyend, D. and Rienäcker, I. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Schnabel, A. and Virot, R. and Weis, A. and Wursten, E. and Zejma, J. and Zsigmond, G.},
title = {Data blinding for the nEDM experiment at PSI},
journal = {European Physical Journal A},
year = {2021},
volume = {57},
number = {4},
note = {Cited by: 1; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105015520&doi=10.1140%2fepja%2fs10050-021-00456-1&partnerID=40&md5=ac368da0c2896ea2db33709670baa20e},
doi = {10.1140/epja/s10050-021-00456-1}
}
|
| Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu P-J,
Crawford C, Daum M, Emmenegger S, Ferraris-Bouchez L, Flaux P,
Grujić Z, Harris P, Hild N, Hommet J, Kasprzak M, Kermaïdic Y, Kirch
K, Komposch S, Kozela A, Krempel J, Lauss B, Lefort T, Lemiere Y,
Leredde A, Mohanmurthy P, Mtchedlishvili A, Naviliat-Cuncic O, Pais
D, Piegsa F, Pignol G, Rawlik M, Rebreyend D, Rienäcker I, Ries D,
Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Virot R,
Weis A, Wursten E, Zejma J and Zsigmond G (2021), "Erratum to: Data blinding for the nEDM experiment at PSI (The European Physical Journal A, (2021), 57, 4, (152), 10.1140/epja/s10050-021-00456-1)", European Physical Journal A. Vol. 57(7) |
| Abstract: A Correction to this paper has been published: https://doi.org/10.1140/epja/s10050-021-00456-1. © 2021, The Author(s). |
BibTeX:
@article{Ayres2021,
author = {Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Chanel, E. and Chiu, P.-J. and Crawford, C.B. and Daum, M. and Emmenegger, S. and Ferraris-Bouchez, L. and Flaux, P. and Grujić, Z. and Harris, P.G. and Hild, N. and Hommet, J. and Kasprzak, M. and Kermaïdic, Y. and Kirch, K. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemiere, Y. and Leredde, A. and Mohanmurthy, P. and Mtchedlishvili, A. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pignol, G. and Rawlik, M. and Rebreyend, D. and Rienäcker, I. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Schnabel, A. and Virot, R. and Weis, A. and Wursten, E. and Zejma, J. and Zsigmond, G.},
title = {Erratum to: Data blinding for the nEDM experiment at PSI (The European Physical Journal A, (2021), 57, 4, (152), 10.1140/epja/s10050-021-00456-1)},
journal = {European Physical Journal A},
year = {2021},
volume = {57},
number = {7},
note = {Cited by: 1; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110976815&doi=10.1140%2fepja%2fs10050-021-00518-4&partnerID=40&md5=cf25d87a49828252efc7c179bcd62624},
doi = {10.1140/epja/s10050-021-00518-4}
}
|
| Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chiu P-J, Clement B, Crawford C, Daum M, Emmenegger S, Fertl M, Fratangelo A, Griffith W, Grujić Z, Harris P, Kirch K, Koss P, Lauss B, Lefort T, Mohanmurthy P, Naviliat-Cuncic O, Pais D, Piegsa F, Pignol G, Rebreyend D, Rienäcker I, Ries D, Roccia S, Ross K, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Severijns N, Shen B, Tavakoli Dinani R, Thorne J, Virot R, Yazdandoost N, Zejma J and Zsigmond G (2021), "Johnson-Nyquist noise effects in neutron electric-dipole-moment experiments", Physical Review A. Vol. 103(6) |
| Abstract: Magnetic Johnson-Nyquist noise (JNN) originating from metal electrodes, used to create a static electric field in neutron electric-dipole-moment (nEDM) experiments, may limit the sensitivity of measurements. We present here a dedicated study on JNN applied to a large-scale long-measurement-time experiment with the implementation of a comagnetometry. In this study, we derive surface- and volume-averaged root-mean-square normal noise amplitudes at a certain frequency bandwidth for a cylindrical geometry. In addition, we model the source of noise as a finite number of current dipoles and demonstrate a method to simulate temporal and three-dimensional spatial dependencies of JNN. The calculations are applied to estimate the impact of JNN on measurements with the new apparatus, n2EDM, at the Paul Scherrer Institute. We demonstrate that the performances of the optically pumped Cs133 magnetometers and Hg199 comagnetometers, which will be used in the apparatus, are not limited by JNN. Further, we find that, in measurements deploying a comagnetometer system, the impact of JNN is negligible for nEDM searches down to a sensitivity of 4×10-28ecm in a single measurement; therefore, the use of economically and mechanically favored solid aluminum electrodes is possible. © 2021 American Physical Society. |
BibTeX:
@article{Ayres2021,
author = {Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Chiu, P.-J. and Clement, B. and Crawford, C.B. and Daum, M. and Emmenegger, S. and Fertl, M. and Fratangelo, A. and Griffith, W.C. and Grujić, Z.D. and Harris, P.G. and Kirch, K. and Koss, P.A. and Lauss, B. and Lefort, T. and Mohanmurthy, P. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pignol, G. and Rebreyend, D. and Rienäcker, I. and Ries, D. and Roccia, S. and Ross, K.U. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Shen, B. and Tavakoli Dinani, R. and Thorne, J.A. and Virot, R. and Yazdandoost, N. and Zejma, J. and Zsigmond, G.},
title = {Johnson-Nyquist noise effects in neutron electric-dipole-moment experiments},
journal = {Physical Review A},
year = {2021},
volume = {103},
number = {6},
note = {Cited by: 2; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107688807&doi=10.1103%2fPhysRevA.103.062801&partnerID=40&md5=c95bf6d5d098bff65dcc9b8d3129e342},
doi = {10.1103/PhysRevA.103.062801}
}
|
| Bottoni S, Cieplicka-Oryńczak N, Leoni S, Fornal B, Colò G,
Bortignon P, Bocchi G, Bazzacco D, Benzoni G, Blanc A, Bracco A,
Ceruti S, Crespi F, De France G, Gamba E, Iskra Ł, Jentschel M,
Köster U, Michelagnoli C, Million B, Mengoni D, Mutti P, Niu Y,
Porzio C, Simpson G, Soldner T, Szpak B, Türler A, Ur C and Urban W
(2021), "Low-spin particle-core and hole-core excitations in 41,47,49Ca isotopes studied by cold-neutron-capture reactions", Physical Review C. Vol. 103(1) |
| Abstract: We present recent results on the structure of the one-valence-particle Ca41 and Ca49 nuclei and the one-valence-hole Ca47 nucleus. The isotopes of interest were populated via the cold-neutron-capture reactions Ca40(n,γ), Ca48(n,γ), and Ca46(n,γ), respectively. The experiments were performed at the Institut Laue-Langevin, within the EXILL campaign, which employed a large array of high-purity germanium (HPGe) detectors. The γ decay and level schemes of these nuclei were investigated by γ-ray coincidence relationships, leading to the identification of 41, 10, and 6 new transitions in Ca41, Ca47, and Ca49, respectively. Branching ratios and intensities were extracted for the γ decay from each state, and γ-ray angular correlations were performed to establish a number of transition multipolarities and mixing ratios, thus helping in the spin assignment of the states. The experimental findings are discussed along with microscopic, self-consistent beyond-mean-field calculations performed with the hybrid configuration mixing model, based on a Skyrme SkX Hamiltonian. The latter suggests that a fraction of the low-spin states of the Ca41, Ca49, and Ca47 nuclei is characterized by the coexistence of either 2p-1h (two-particle-one-hole) and 1p-2h excitations, or couplings between single-particle or single-hole degrees of freedom and collective vibrations (phonons) of the doubly-magic "core." © 2021 American Physical Society. |
BibTeX:
@article{Bottoni2021,
author = {Bottoni, S. and Cieplicka-Oryńczak, N. and Leoni, S. and Fornal, B. and Colò, G. and Bortignon, P.F. and Bocchi, G. and Bazzacco, D. and Benzoni, G. and Blanc, A. and Bracco, A. and Ceruti, S. and Crespi, F.C.L. and De France, G. and Gamba, E.R. and Iskra, Ł.W. and Jentschel, M. and Köster, U. and Michelagnoli, C. and Million, B. and Mengoni, D. and Mutti, P. and Niu, Y. and Porzio, C. and Simpson, G. and Soldner, T. and Szpak, B. and Türler, A. and Ur, C.A. and Urban, W.},
title = {Low-spin particle-core and hole-core excitations in Ca 41,47,49 isotopes studied by cold-neutron-capture reactions},
journal = {Physical Review C},
year = {2021},
volume = {103},
number = {1},
note = {Cited by: 3; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100263929&doi=10.1103%2fPhysRevC.103.014320&partnerID=40&md5=658ddaa70bcf0e10904795956d23ac01},
doi = {10.1103/PhysRevC.103.014320}
}
|
| Ciemała M, Ziliani S, Crespi F, Leoni S, Fornal B, Maj A,
Bednarczyk P, Benzoni G, Bracco A, Boiano C, Bottoni S, Brambilla S,
Bast M, Beckers M, Braunroth T, Camera F, Cieplicka-Oryńczak N,
Clément E, Coelli S, Dorvaux O, Erturk S, De France G, Fransen C,
Goldkuhle A, Grębosz J, Harakeh M, Iskra Ł, Jacquot B, Karpov A,
Kicińska-Habior M, Kim Y-H, Kmiecik M, Lemasson A, Lenzi S,
Lewitowicz M, Li H, Matea I, Mazurek K, Michelagnoli C,
Matejska-Minda M, Million B, Müller-Gatermann C, Nanal V,
Napiorkowski P, Napoli D, Palit R, Rejmund M, Schmitt C, Stanoiu M,
Stefan I, Vardaci E, Wasilewska B, Wieland O, Ziębliński M and
Zielińska M (2021), "Accessing tens-to-hundreds femtoseconds nuclear state lifetimes with low-energy binary heavy-ion reactions", European Physical Journal A. Vol. 57(5) |
| Abstract: A novel Monte Carlo technique has been developed to determine lifetimes of excited states in the tens-to-hundreds femtoseconds range in products of low-energy heavy-ion binary reactions, with complex velocity distributions. The method is based on a detailed study of Doppler-broadened γ-ray lineshapes. Its relevance is demonstrated in connection with the 18O(7.0MeV/u)+181Ta experiment, performed at GANIL with the AGATA+VAMOS+PARIS setup, to study neutron-rich O, C, N,.. nuclei. Excited states in 17O and 19O , with known lifetimes, are used to validate the method over the ∼20-400fs lifetime-sensitivity range. Emphasis is given to the unprecedented position resolution provided by γ-tracking arrays, which turns out to be essential for reaching the required accuracy in Doppler-shift correction. The technique is anticipated to be an important tool for lifetime investigations in exotic neutron-rich nuclei, produced with intense ISOL-type beams. © 2021, The Author(s). |
BibTeX:
@article{Ciemała2021,
author = {Ciemała, M. and Ziliani, S. and Crespi, F.C.L. and Leoni, S. and Fornal, B. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Oryńczak, N. and Clément, E. and Coelli, S. and Dorvaux, O. and Erturk, S. and De France, G. and Fransen, C. and Goldkuhle, A. and Grębosz, J. and Harakeh, M.N. and Iskra, Ł.W. and Jacquot, B. and Karpov, A. and Kicińska-Habior, M. and Kim, Y.-H. and Kmiecik, M. and Lemasson, A. and Lenzi, S.M. and Lewitowicz, M. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Matejska-Minda, M. and Million, B. and Müller-Gatermann, C. and Nanal, V. and Napiorkowski, P. and Napoli, D.R. and Palit, R. and Rejmund, M. and Schmitt, Ch. and Stanoiu, M. and Stefan, I. and Vardaci, E. and Wasilewska, B. and Wieland, O. and Ziębliński, M. and Zielińska, M.},
title = {Accessing tens-to-hundreds femtoseconds nuclear state lifetimes with low-energy binary heavy-ion reactions},
journal = {European Physical Journal A},
year = {2021},
volume = {57},
number = {5},
note = {Cited by: 6; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105223331&doi=10.1140%2fepja%2fs10050-021-00451-6&partnerID=40&md5=290f94042e797d966710471355ac5999},
doi = {10.1140/epja/s10050-021-00451-6}
}
|
| Dey A, Biswas D, Chakraborty A, Mukhopadhyay S, Mondal A, Danu L,
Mukherjee B, Garg S, Maheshwari B, Jain A, Blanc A, De France G,
Jentschel M, Köster U, Leoni S, Mutti P, Simpson G, Soldner T, Ur C
and Urban W (2021), "Measurement of relative isotopic yield distribution of even-even fission fragments from 235U(nth,f) following γ -ray spectroscopy", Physical Review C. Vol. 103(4) |
| Abstract: A detailed investigation on the relative isotopic distributions has been carried out for the first time in case of even-even correlated fission fragments for the U235(nth,f) fission reaction. High-statistics data were obtained in a prompt γ-ray spectroscopy measurement during the EXILL campaign at ILL, Grenoble, France. The extensive off-line analysis of the coincidence data have been carried out using four different coincidence methods. Combining the results from two-dimensional γ-γ and three-dimensional γ-γ-γ coincidence analysis, a comprehensive picture of the relative isotopic yield distributions of the even-even neutron-rich fission fragments has emerged. The experimentally observed results have been substantiated by the theoretical calculations based on a novel approach of isospin conservation, and a reasonable agreement has been obtained. The calculations following the semiempirical GEF model have also been carried out. The results from the GEF model calculations are found to be in fair agreement with the experimental results. © 2021 American Physical Society. |
BibTeX:
@article{Dey2021,
author = {Dey, Aniruddha and Biswas, D.C. and Chakraborty, A. and Mukhopadhyay, S. and Mondal, A.K. and Danu, L.S. and Mukherjee, B. and Garg, S. and Maheshwari, B. and Jain, A.K. and Blanc, A. and De France, G. and Jentschel, M. and Köster, U. and Leoni, S. and Mutti, P. and Simpson, G. and Soldner, T. and Ur, C.A. and Urban, W.},
title = {Measurement of relative isotopic yield distribution of even-even fission fragments from U 235 (nth,f) following γ -ray spectroscopy},
journal = {Physical Review C},
year = {2021},
volume = {103},
number = {4},
note = {Cited by: 2; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105524464&doi=10.1103%2fPhysRevC.103.044322&partnerID=40&md5=ebc0a3822b94c257f77e02d531622223},
doi = {10.1103/PhysRevC.103.044322}
}
|
| Fernández A, Jungclaus A, Golubev P, Rudolph D, Sarmiento L,
Gargano A, Naïdja H, Astier A, Dupont E, Gadea A, Nácher E, Perea A,
Wimmer K, Clément E, Fremont G, Goupil J, Houarner C, Jacquot B,
Korichi A, Lemasson A, Li H, Ljungvall J, Ménager L, Pérez-Vidal R,
Petrache C, Ralet D, Ropert J, Saillant F, Såmark-Roth A, Simpson G,
Spitaels C, Zielinska M, Ansari S, Dudouet J, Illana A, Jurado M,
Kocheva D, Lalović N, Lorenz C, Quintana B, Rainovski G, Redon N,
Tocabens G, Barrientos D, Benzoni G, Birkenbach B, Boston A, Boston
H, Bracco A, Ciemala M, Collado J, Cullen D, Domingo-Pardo C, Eberth
J, González V, Harkness-Brennan L, Hess H, Judson D, Korten W, Leoni
S, Maj A, Menegazzo R, Mengoni D, Michelagnoli C, Million B, Napoli
D, Nyberg J, Podolyak Z, Pullia A, Reiter P, Sanchis E, Stezowski O,
Theisen C and Valiente-Dobón J (2021), "Reinterpretation of excited states in 212Po: Shell-model multiplets rather than α-cluster states", Physical Review C. Vol. 104(5) |
| Abstract: A γ-ray spectroscopic study of Po212 was performed at the Grand Accélérateur National d'Ions Lourds, using the inverse kinematics α-transfer reaction C12(Pb208,Po212)Be8 and the AGATA spectrometer. A careful analysis based on γγ coincidence relations allowed us to establish 14 new excited states in the energy range between 1.9 and 3.3 MeV. None of these states, however, can be considered as candidates for the levels with spins and parities of 1- and 2- and excitation energies below 2.1 MeV, which have been predicted by recent α-cluster model calculations. A systematic comparison of the experimentally established excitation scheme of Po212 with shell-model calculations was performed. This comparison suggests that the six states with excitation energies (spins and parities) of 1744 (4-), 1751 (8-), 1787 (6-), 1946 (4-), 1986 (8-), and 2016 (6-) keV, which previously were interpreted as α-cluster states, may in fact be of positive parity and belong to low-lying shell-model multiplets. This reinterpretation of the structure of Po212 is supported by experimental information with respect to the linear polarization of γ rays, which suggests a magnetic character of the 432-keV γ ray decaying from the state at an excitation energy of 1787 keV to the 61+ yrast state, and exclusive reaction cross sections. © 2021 authors. Published by the American Physical Society. |
BibTeX:
@article{Fernández2021,
author = {Fernández, A. and Jungclaus, A. and Golubev, P. and Rudolph, D. and Sarmiento, L.G. and Gargano, A. and Naïdja, H. and Astier, A. and Dupont, E. and Gadea, A. and Nácher, E. and Perea, A. and Wimmer, K. and Clément, E. and Fremont, G. and Goupil, J. and Houarner, C. and Jacquot, B. and Korichi, A. and Lemasson, A. and Li, H.J. and Ljungvall, J. and Ménager, L. and Pérez-Vidal, R.M. and Petrache, C.M. and Ralet, D. and Ropert, J.A. and Saillant, F. and Såmark-Roth, A. and Simpson, G.S. and Spitaels, C. and Zielinska, M. and Ansari, S. and Dudouet, J. and Illana, A. and Jurado, M. and Kocheva, D. and Lalović, N. and Lorenz, Ch. and Quintana, B. and Rainovski, G. and Redon, N. and Tocabens, G. and Barrientos, D. and Benzoni, G. and Birkenbach, B. and Boston, A.J. and Boston, H.C. and Bracco, A. and Ciemala, M. and Collado, J. and Cullen, D.M. and Domingo-Pardo, C. and Eberth, J. and González, V. and Harkness-Brennan, L.J. and Hess, H. and Judson, D.S. and Korten, W. and Leoni, S. and Maj, A. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Million, B. and Napoli, D.R. and Nyberg, J. and Podolyak, Zs. and Pullia, A. and Reiter, P. and Sanchis, E. and Stezowski, O. and Theisen, Ch. and Valiente-Dobón, J.J.},
title = {Reinterpretation of excited states in Po 212: Shell-model multiplets rather than α -cluster states},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {5},
note = {Cited by: 2; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120539860&doi=10.1103%2fPhysRevC.104.054316&partnerID=40&md5=7a0d282b6505d9812d72d90e0b05afce},
doi = {10.1103/PhysRevC.104.054316}
}
|
| Gallin-Martel M, Kim Y, Abbassi L, Bes A, Boiano C, Brambilla S,
Collot J, Colombi G, Crozes T, Curtoni S, Dauvergne D, Destouches C,
Donatini F, Gallin-Martel L, Ghouini O, Hostachy J, Iskra Ł,
Jastrzab M, Kessedjian G, Köster U, Lacoste A, Lyoussi A, Marcatili
S, Motte J, Muraz J, Nowak T, Ottaviani L, Pernot J, Portier A,
Rahajandraibe W, Ramdhane M, Rydygier M, Sage C, Tchoualack A,
Tribouilloy L and Yamouni M (2021), "Characterization of Diamond and Silicon Carbide Detectors With Fission Fragments", Frontiers in Physics. Vol. 9 |
| Abstract: Experimental fission studies for reaction physics or nuclear spectroscopy can profit from fast, efficient, and radiation-resistant fission fragment (FF) detectors. When such experiments are performed in-beam in intense thermal neutron beams, additional constraints arise in terms of target-detector interface, beam-induced background, etc. Therefore, wide gap semi-conductor detectors were tested with the aim of developing innovative instrumentation for such applications. The detector characterization was performed with mass- and energy-separated fission fragment beams at the ILL (Institut Laue Langevin) LOHENGRIN spectrometer. Two single crystal diamonds, three polycrystalline and one diamond-on-iridium as well as a silicon carbide detector were characterized as solid state ionization chamber for FF detection. Timing measurements were performed with a 500-µm thick single crystal diamond detector read out by a broadband amplifier. A timing resolution of ∼10.2 ps RMS was obtained for FF with mass A = 98 at 90 MeV kinetic energy. Using a spectroscopic preamplifier developed at INFN-Milano, the energy resolution measured for the same FF was found to be slightly better for a ∼50-µm thin single crystal diamond detector (∼1.4% RMS) than for the 500-µm thick one (∼1.6% RMS), while a value of 3.4% RMS was obtained with the 400-µm silicon carbide detector. The Pulse Height Defect (PHD), which is significant in silicon detectors, was also investigated with the two single crystal diamond detectors. The comparison with results from α and triton measurements enabled us to conclude that PHD leads to ∼50% loss of the initial generated charge carriers for FF. In view of these results, a possible detector configuration and integration for in-beam experiments has been discussed. © Copyright © 2021 Gallin-Martel, Kim, Abbassi, Bes, Boiano, Brambilla, Collot, Colombi, Crozes, Curtoni, Dauvergne, Destouches, Donatini, Gallin-Martel, Ghouini, Hostachy, Iskra, Jastrzab, Kessedjian, Köster, Lacoste, Lyoussi, Marcatili, Motte, Muraz, Nowak, Ottaviani, Pernot, Portier, Rahajandraibe, Ramdhane, Rydygier, Sage, Tchoualack, Tribouilloy and Yamouni. |
BibTeX:
@article{Gallin-Martel2021,
author = {Gallin-Martel, M.L. and Kim, Y.H. and Abbassi, L. and Bes, A. and Boiano, C. and Brambilla, S. and Collot, J. and Colombi, G. and Crozes, T. and Curtoni, S. and Dauvergne, D. and Destouches, C. and Donatini, F. and Gallin-Martel, L. and Ghouini, O. and Hostachy, J.Y. and Iskra, Ł.W. and Jastrzab, M. and Kessedjian, G. and Köster, U. and Lacoste, A. and Lyoussi, A. and Marcatili, S. and Motte, J.F. and Muraz, J.F. and Nowak, T. and Ottaviani, L. and Pernot, J. and Portier, A. and Rahajandraibe, W. and Ramdhane, M. and Rydygier, M. and Sage, C. and Tchoualack, A. and Tribouilloy, L. and Yamouni, M.},
title = {Characterization of Diamond and Silicon Carbide Detectors With Fission Fragments},
journal = {Frontiers in Physics},
year = {2021},
volume = {9},
note = {Cited by: 1; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116468308&doi=10.3389%2ffphy.2021.732730&partnerID=40&md5=e03f703cbf3e6d8981096c61ae19ab79},
doi = {10.3389/fphy.2021.732730}
}
|
| Häfner G, Lozeva R, Naïdja H, Lebois M, Jovančević N, Thisse D,
Etasse D, Canavan R, Rudigier M, Wilson J, Adamska E, Adsley P,
Algora A, Babo M, Belvedere K, Benito J, Benzoni G, Blazhev A, Boso
A, Bottoni S, Bunce M, Chakma R, Cieplicka-Oryńczak N, Collins S,
Cortés M, Davies P, Delafosse C, Fallot M, Fraile L, Gerst R-B,
Gjestvang D, Guadilla V, Hauschild K, Henrich C, Homm I, Ibrahim F,
Iskra Ł, Jazwari S, Korgul A, Koseoglou P, Kröll T, Kurtukian-Nieto
T, Le-Meur L, Leoni S, Ljungvall J, Lopez-Martens A, Matthieu L,
Miernik K, Nemer J, Oberstedt S, Paulsen W, Piersa-Siłkowska M,
Popovitch Y, Porzio C, Qi L, Ralet D, Regan P, Reygadas Tello D,
Rezynkina K, Sanchez-Tembleque V, Schmitt C, Söderström P-A, Sürder
C, Tocabens G, Vedia V, Verney D, Warr N, Wasilewska B, Wiederhold
J, Yavahchova M, Zeiser F and Ziliani S (2021), "First lifetime investigations of iodine isotopes: The quest for collectivity", Physical Review C. Vol. 104(1) |
| Abstract: We report on spectroscopic information and lifetime measurements in the neutron-rich isotopes. This is the first lifetime data on iodine isotopes beyond . Excited states were populated in fast neutron-induced fission of at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid -ball spectrometer. The level schemes of the isotopes are revised in terms of excited states with up to maximum spin-parity of , populated for the first time in fast neutron-induced fission. We provide first results on the lifetimes of the and states in and , and the state in . In addition, we give upper lifetime limits for the states in , the state in , the state in , and reexamine the state in . The isomeric data in are reinvestigated, such as the previously known and isomers with of 1.64(14) and 4.6(7) ns, respectively, as obtained in this work. The new spectroscopic information is compared to that from spontaneous or thermal-neutron induced fission and discussed in the context of large scale shell-model (LSSM) calculations for the region beyond , indicating the behavior of collectivity for the three valence-proton iodine chain with . ©2021 American Physical Society |
BibTeX:
@article{Häfner2021,
author = {Häfner, G. and Lozeva, R. and Naïdja, H. and Lebois, M. and Jovančević, N. and Thisse, D. and Etasse, D. and Canavan, R.L. and Rudigier, M. and Wilson, J.N. and Adamska, E. and Adsley, P. and Algora, A. and Babo, M. and Belvedere, K. and Benito, J. and Benzoni, G. and Blazhev, A. and Boso, A. and Bottoni, S. and Bunce, M. and Chakma, R. and Cieplicka-Oryńczak, N. and Collins, S.M. and Cortés, M.L. and Davies, P.J. and Delafosse, C. and Fallot, M. and Fraile, L.M. and Gerst, R.-B. and Gjestvang, D. and Guadilla, V. and Hauschild, K. and Henrich, C. and Homm, I. and Ibrahim, F. and Iskra, Ł.W. and Jazwari, S. and Korgul, A. and Koseoglou, P. and Kröll, TH. and Kurtukian-Nieto, T. and Le-Meur, L. and Leoni, S. and Ljungvall, J. and Lopez-Martens, A. and Matthieu, L. and Miernik, K. and Nemer, J. and Oberstedt, S. and Paulsen, W. and Piersa-Siłkowska, M. and Popovitch, Y. and Porzio, C. and Qi, L. and Ralet, D. and Regan, P.H. and Reygadas Tello, D. and Rezynkina, K. and Sanchez-Tembleque, V. and Schmitt, C. and Söderström, P.-A. and Sürder, C. and Tocabens, G. and Vedia, V. and Verney, D. and Warr, N. and Wasilewska, B. and Wiederhold, J. and Yavahchova, M.S. and Zeiser, F. and Ziliani, S.},
title = {First lifetime investigations of iodine isotopes: The quest for collectivity},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {1},
note = {Cited by: 2; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110366115&doi=10.1103%2fPhysRevC.104.014316&partnerID=40&md5=27b5fcced50bc64c7e58f6733c25a670},
doi = {10.1103/PhysRevC.104.014316}
}
|
| Häfner G, Lozeva R, Naïdja H, Lebois M, Jovancevic N, Thisse D,
Etasse D, Canavan R, Rudigier M, Wilson J, Adamska E, Adsley P, Babo
M, Belvedere K, Benito J, Benzoni G, Blazhev A, Boso A, Bottoni S,
Bunce M, Chakma R, Cieplicka-Orynczak N, Collins S, Cortés M, Davies
P, Delafosse C, Fallot M, Fornal B, Fraile L, Gerst R-B, Gjestvang
D, Guadilla V, Hauschild K, Henrich C, Homm I, Ibrahim F, Iskra L,
Jazwari S, Jolie J, Korgul A, Koseoglou P, Kröll T, Kurtukian-Nieto
T, Le-Meur L, Ljungvall J, Lopez-Martens A, Matea I, Matthieu L,
Miernik K, Nemer J, Oberstedt S, Paulsen W, Piersa M, Popovitch Y,
Porzio C, Qi L, Ralet D, Regan P, Reygadas Tello D, Rezynkina K,
Sanchez V, Schmitt C, Söderström P-A, Sürder C, Tocabens G, Vedia V,
Verney D, Warr N, Wasilewska B, Wiederhold J, Yavahchova M, Zeiser F
and Ziliani S (2021), "Spectroscopy and lifetime measurements in 134,136,138Te isotopes and implications for the nuclear structure beyond N=82", Physical Review C. Vol. 103(3) |
| Abstract: We report on spectroscopic information and lifetime measurements of even-even neutron-rich Te isotopes. Excited states were populated in fast-neutron induced fission of U238 at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid ?-ball spectrometer. We provide first results on lifetimes of the 61+ state in Te136 and the (61+), (41+), and (21+) states in Te138 and discuss the results in the context of large-scale shell-model calculations. The level schemes of Te136 and Te138 are revised in terms of lifetimes of their 21+,41+ states and updated information on the (42+) state in Te136 is presented. In addition, previously reported data on spectroscopy and lifetimes in Te134 are reexamined. This work provides new insights into the evolution of collectivity for Te isotopes with N=82,84,86. ©2021 American Physical Society. |
BibTeX:
@article{Häfner2021,
author = {Häfner, G. and Lozeva, R. and Naïdja, H. and Lebois, M. and Jovancevic, N. and Thisse, D. and Etasse, D. and Canavan, R.L. and Rudigier, M. and Wilson, J.N. and Adamska, E. and Adsley, P. and Babo, M. and Belvedere, K. and Benito, J. and Benzoni, G. and Blazhev, A. and Boso, A. and Bottoni, S. and Bunce, M. and Chakma, R. and Cieplicka-Orynczak, N. and Collins, S.M. and Cortés, M.L. and Davies, P.J. and Delafosse, C. and Fallot, M. and Fornal, B. and Fraile, L.M. and Gerst, R.-B. and Gjestvang, D. and Guadilla, V. and Hauschild, K. and Henrich, C. and Homm, I. and Ibrahim, F. and Iskra, L.W. and Jazwari, S. and Jolie, J. and Korgul, A. and Koseoglou, P. and Kröll, Th. and Kurtukian-Nieto, T. and Le-Meur, L. and Ljungvall, J. and Lopez-Martens, A. and Matea, I. and Matthieu, L. and Miernik, K. and Nemer, J. and Oberstedt, S. and Paulsen, W. and Piersa, M. and Popovitch, Y. and Porzio, C. and Qi, L. and Ralet, D. and Regan, P.H. and Reygadas Tello, D. and Rezynkina, K. and Sanchez, V. and Schmitt, C. and Söderström, P.-A. and Sürder, C. and Tocabens, G. and Vedia, V. and Verney, D. and Warr, N. and Wasilewska, B. and Wiederhold, J. and Yavahchova, M.S. and Zeiser, F. and Ziliani, S.},
title = {Spectroscopy and lifetime measurements in Te 134,136,138 isotopes and implications for the nuclear structure beyond N=82},
journal = {Physical Review C},
year = {2021},
volume = {103},
number = {3},
note = {Cited by: 6; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104260238&doi=10.1103%2fPhysRevC.103.034317&partnerID=40&md5=587005be2961a08c4fc2f77fe6d866df},
doi = {10.1103/PhysRevC.103.034317}
}
|
| Nyakó B, Timár J, Csatlós M, Dombrádi Z, Krasznahorkay A, Kuti I,
Sohler D, Tornyi T, Czerwiński M, Rząca-Urban T, Urban W, Atanasova
L, Balabanski D, Sieja K, Blanc A, De France G, Jentschel M, Köster
U, Mutti P, Simpson G, Soldner T and Ur C (2021), "Observation of excited states in the neutron-rich nucleus 89Br", Physical Review C. Vol. 104(5) |
| Abstract: Excited states of the neutron-rich Br89 have been observed for the first time. They were populated in cold-neutron induced fission of U235 at the PF1B facility of the Institut Laue-Langevin, Grenoble. The measurement of γ radiation following fission has been performed using the EXILL array of Ge detectors. The observed level structure looks similar to the yrast level structure of Br87. Large valence space shell model calculations performed for Br89 confirmed this similarity. Comparison of the observed πg9/2 band with the results of the shell model calculations provides information on the evolution of collectivity in this region. © 2021 American Physical Society. |
BibTeX:
@article{Nyakó2021,
author = {Nyakó, B.M. and Timár, J. and Csatlós, M. and Dombrádi, Zs. and Krasznahorkay, A.J. and Kuti, I. and Sohler, D. and Tornyi, T.G. and Czerwiński, M. and Rząca-Urban, T. and Urban, W. and Atanasova, L. and Balabanski, D.L. and Sieja, K. and Blanc, A. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Simpson, G.S. and Soldner, T. and Ur, C.A.},
title = {Observation of excited states in the neutron-rich nucleus Br 89},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {5},
note = {Cited by: 2},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119323186&doi=10.1103%2fPhysRevC.104.054305&partnerID=40&md5=038c852dda2e6899ba5ea84781d6488f},
doi = {10.1103/PhysRevC.104.054305}
}
|
| Nyakó B, Timár J, Csatlós M, Dombrádi Z, Krasznahorkay A, Kuti I,
Sohler D, Tornyi T, Czerwiński M, Rząca-Urban T, Urban W, Bączyk P,
Atanasova L, Balabanski D, Sieja K, Blanc A, Jentschel M, Köster U,
Mutti P, Soldner T, De France G, Simpson G and Ur C (2021), "Medium-spin states of the neutron-rich nucleus 87Br", Physical Review C. Vol. 103(3) |
| Abstract: Medium-spin excited states of the neutron-rich nucleus Br87 were observed and studied for the first time. They were populated in fission of U235 induced by the cold-neutron beam of the PF1B facility of the Institut Laue-Langevin, Grenoble. The measurement of γ radiation following fission was performed using the EXILL array of Ge detectors. The observed level scheme was compared with results of large valence space shell model calculations. The medium-spin level scheme consists of three bandlike structures, which can be understood as bands built on the πf5/2, π(p3/2+f5/2), and πg9/2 configurations. The behavior of the observed πg9/2 band at high spins shows a considerable deviation from the shell model predictions. This deviation in this band is probably the result of an increased collectivity, which can be understood assuming that the πg9/2 high-j proton polarizes the core. © 2021 American Physical Society. |
BibTeX:
@article{Nyakó2021,
author = {Nyakó, B.M. and Timár, J. and Csatlós, M. and Dombrádi, Zs. and Krasznahorkay, A. and Kuti, I. and Sohler, D. and Tornyi, T.G. and Czerwiński, M. and Rząca-Urban, T. and Urban, W. and Bączyk, P. and Atanasova, L. and Balabanski, D.L. and Sieja, K. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Medium-spin states of the neutron-rich nucleus Br 87},
journal = {Physical Review C},
year = {2021},
volume = {103},
number = {3},
note = {Cited by: 5; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102946124&doi=10.1103%2fPhysRevC.103.034304&partnerID=40&md5=7640e989b81db3317ff19e884dc158c4},
doi = {10.1103/PhysRevC.103.034304}
}
|
| Porzio C, Michelagnoli C, Cieplicka-Oryńczak N, Sferrazza M, Leoni
S, Fornal B, Tsunoda Y, Otsuka T, Bottoni S, Costache C, Crespi F,
Iskra L, Jentschel M, Kandzia F, Kim Y-H, Köster U, Mǎrginean N,
Mihai C, Mutti P and Turturicǎ A (2021), "High-precision spectroscopy of 65Ni via neutron capture", Nuovo Cimento della Societa Italiana di Fisica C. Vol. 44(2-3) |
| Abstract: Detailed studies of the low-spin structures of neutron-rich Ni isotopes may help shedding light on the shape coexistence phenomenon. Of particular interest is the 65Ni nucleus, since it lies between 64Ni and 66Ni, where shape coexistence has been reported earlier. A spectroscopic investigation of 65Ni has been performed at Institut Laue-Langevin via the reaction64Ni(n,γ)65Ni, using the FIPPS HPGe array. Several new gamma transitions have been observed and angular correlation analyses have been performed. A comparison with Monte Carlo shell-model calculations pointed to a dominance of spherical states up to 1.5 MeV excitation energy, together with the appearance of two states of oblate character. © 2021 Societa Italiana di Fisica. All rights reserved. |
BibTeX:
@article{Porzio2021,
author = {Porzio, C. and Michelagnoli, C. and Cieplicka-Oryńczak, N. and Sferrazza, M. and Leoni, S. and Fornal, B. and Tsunoda, Y. and Otsuka, T. and Bottoni, S. and Costache, C. and Crespi, F.C.L. and Iskra, L.W. and Jentschel, M. and Kandzia, F. and Kim, Y.-H. and Köster, U. and Mǎrginean, N. and Mihai, C. and Mutti, P. and Turturicǎ, A.},
title = {High-precision spectroscopy of 65Ni via neutron capture},
journal = {Nuovo Cimento della Societa Italiana di Fisica C},
year = {2021},
volume = {44},
number = {2-3},
note = {Cited by: 1},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116537442&doi=10.1393%2fncc%2fi2021-21069-6&partnerID=40&md5=e3970d4f8af79dee37ed355344c62f93},
doi = {10.1393/ncc/i2021-21069-6}
}
|
| Schmitt C, Lemasson A, Schmidt K-H, Jhingan A, Biswas S, Kim Y,
Ramos D, Andreyev A, Curien D, Ciemala M, Clément E, Dorvaux O, De
Canditiis B, Didierjean F, Duchêne G, Dudouet J, Frankland J,
Jacquot B, Raison C, Ralet D, Retailleau B-M, Stuttgé L and
Tsekhanovich I (2021), "Experimental Evidence for Common Driving Effects in Low-Energy Fission from Sublead to Actinides", Physical Review Letters. Vol. 126(13) |
| Abstract: Isotopic distributions of fragments from fission of the neutron-deficient Hg178 nuclide are reported. This experimental observable is obtained for the first time in the region around lead using an innovative approach based on inverse kinematics and the coincidence between the large acceptance magnetic spectrometer VAMOS++ and a new detection arm close to the target. The average fragment N/Z ratio and prompt neutron Mn multiplicity are derived and compared with current knowledge from actinide fission. A striking consistency emerges, revealing the unexpected dominant role of the proton subsystem with atomic number between the Z=28 and 50 magic numbers. The origin of nuclear charge polarization in fission and fragment deformation at scission are discussed. © 2021 authors. |
BibTeX:
@article{Schmitt2021,
author = {Schmitt, C. and Lemasson, A. and Schmidt, K.-H. and Jhingan, A. and Biswas, S. and Kim, Y.H. and Ramos, D. and Andreyev, A.N. and Curien, D. and Ciemala, M. and Clément, E. and Dorvaux, O. and De Canditiis, B. and Didierjean, F. and Duchêne, G. and Dudouet, J. and Frankland, J. and Jacquot, B. and Raison, C. and Ralet, D. and Retailleau, B.-M. and Stuttgé, L. and Tsekhanovich, I.},
title = {Experimental Evidence for Common Driving Effects in Low-Energy Fission from Sublead to Actinides},
journal = {Physical Review Letters},
year = {2021},
volume = {126},
number = {13},
note = {Cited by: 13; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104476609&doi=10.1103%2fPhysRevLett.126.132502&partnerID=40&md5=5999d7ac536bd266be01e83616ceabae},
doi = {10.1103/PhysRevLett.126.132502}
}
|
| Sekal S, Fraile L, Licǎ R, Borge M, Walters W, Aprahamian A, Benchouk C, Bernards C, Briz J, Bucher B, Chiara C, Dlouhý Z, Gheorghe I, Ghiţǎ D, Hoff P, Jolie J, Köster U, Kurcewicz W, Mach H, Mǎrginean N, Mǎrginean R, Meliani Z, Olaizola B, Paziy V, Régis J, Rudigier M, Sava T, Simpson G, Stǎnoiu M and Stroe L (2021), "Low-spin states in 80Ge populated in the β decay of the 80Ga 3– isomer", Physical Review C. Vol. 104(2) |
| Abstract: The structure of Ge80 has been investigated at the ISOLDE facility at CERN. A previous study reported for the first time a low-lying 02+ intruder state at 639 keV, based on the coincidence with a previously unobserved 1764-keV γ ray, and suggested it as evidence for shape coexistence in Ge80. We used the β decay from the 3- 22.4-keV state in Ga80 to enhance the population of low-spin states in Ge80, including any excited 0+ level, and γγ coincidences to investigate it. We observed a 1764-keV γ ray in coincidence with strong transitions in Ge80, thus not feeding the proposed 639-keV 02+. No connecting transitions from previously known levels to the 639-keV and 2403-keV 23+ states could be established either. Shell-model calculations for Ge isotopes and N=48 isotones were performed. They succeed to explain most of the experimental levels, but fail to reproduce the presence of a 02+ state below ≈1200 keV in Ge80. Our experimental findings and shell-model calculations are difficult to reconcile with a very low-lying 02+ state in Ge80. © 2021 authors. Published by the American Physical Society. |
BibTeX:
@article{Sekal2021,
author = {Sekal, S. and Fraile, L.M. and Licǎ, R. and Borge, M.J.G. and Walters, W.B. and Aprahamian, A. and Benchouk, C. and Bernards, C. and Briz, J.A. and Bucher, B. and Chiara, C.J. and Dlouhý, Z. and Gheorghe, I. and Ghiţǎ, D.G. and Hoff, P. and Jolie, J. and Köster, U. and Kurcewicz, W. and Mach, H. and Mǎrginean, N. and Mǎrginean, R. and Meliani, Z. and Olaizola, B. and Paziy, V. and Régis, J.M. and Rudigier, M. and Sava, T. and Simpson, G.S. and Stǎnoiu, M. and Stroe, L.},
title = {Low-spin states in Ge 80 populated in the β decay of the Ga 80 3- isomer},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {2},
note = {Cited by: 6; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113686638&doi=10.1103%2fPhysRevC.104.024317&partnerID=40&md5=69beabf8d356338dee3a718e1689264d},
doi = {10.1103/PhysRevC.104.024317}
}
|
| Siciliano M, Valiente-Dobón J, Goasduff A, Rodríguez T, Bazzacco
D, Benzoni G, Braunroth T, Cieplicka-Oryńczak N, Clément E, Crespi
FCL, de France G, Doncel M, Ertürk S, Fransen C, Gadea A, Georgiev
G, Goldkuhle A, Jakobsson U, Jaworski G, John P, Kuti I, Lemasson A,
Li H, Lopez-Martens A, Marchi T, Mengoni D, Michelagnoli C,
Mijatović T, Müller-Gatermann C, Napoli D, Nyberg J, Palacz M,
Pérez-Vidal R, Sayği B, Sohler D, Szilner S and Testov D (2021), "Lifetime measurements in the even-even isotopes", Physical Review C. Vol. 104(3) |
| Abstract: Background: The heaviest doubly-magic nucleus, , and the neighboring nuclei offer unique opportunities to investigate the properties of nuclear interaction. For instance, the structure of light-Sn nuclei has been shown to be affected by the delicate balance between nuclear-interaction components, such as pairing and quadrupole correlations. From Cd to Te, many common features and phenomena have been observed experimentally along the isotopic chains, leading to theoretical studies devoted to a more general and comprehensive study of the region. In this context, having only two proton holes in the shell, the Cd isotopes are expected to present properties similar to those found in the Sn isotopic chain.; Purpose: The aim of this work was to measure lifetimes of excited states in neutron-deficient nuclei in the vicinity of .; Results: Lifetimes of low-lying states were measured in the even-mass isotopes. In particular, multiple states with excitation energy up to MeV, belonging to various bands, were populated in via inelastic scattering. The transition strengths corresponding to the measured lifetimes were compared with those resulting from state-of-the-art beyond-mean-field calculations using the symmetry-conserving configuration-mixing approach.; Methods: The neutron-deficient nuclei in the region were populated using a multinucleon transfer reaction with a beam and a target. The beamlike products were identified by the VAMOS spectrometer, while the rays were detected using the AGATA array. Lifetimes of excited states were determined using the recoil distance Doppler-shift method, employing the Cologne differential plunger.; Conclusions: Despite the similarities in the electromagnetic properties of the low-lying states, there is a fundamental structural difference between the ground-state bands in the and isotopes. The comparison between experimental and theoretical results revealed a rotational character of the Cd nuclei, which have prolate-deformed ground states with . At this deformation becomes a closed-shell configuration, which is favored with respect to the spherical one. ©2021 American Physical Society |
BibTeX:
@article{Siciliano2021,
author = {Siciliano, M. and Valiente-Dobón, J.J. and Goasduff, A. and Rodríguez, T.R. and Bazzacco, D. and Benzoni, G. and Braunroth, T. and Cieplicka-Oryńczak, N. and Clément, E. and Crespi, F. C. L. and de France, G. and Doncel, M. and Ertürk, S. and Fransen, C. and Gadea, A. and Georgiev, G. and Goldkuhle, A. and Jakobsson, U. and Jaworski, G. and John, P.R. and Kuti, I. and Lemasson, A. and Li, H. and Lopez-Martens, A. and Marchi, T. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Müller-Gatermann, C. and Napoli, D.R. and Nyberg, J. and Palacz, M. and Pérez-Vidal, R.M. and Sayği, B. and Sohler, D. and Szilner, S. and Testov, D.},
title = {Lifetime measurements in the even-even isotopes},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {3},
note = {Cited by: 7; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116253168&doi=10.1103%2fPhysRevC.104.034320&partnerID=40&md5=83696766590cc8e0b984da23cc52e3b4},
doi = {10.1103/PhysRevC.104.034320}
}
|
| Urban W, Sieja K, Rząca-Urban T, Wiśniewski J, Blanc A, Jentschel
M, Mutti P, Köster U, Soldner T, De France G, Simpson G, Ur C, Smith
A and Greene J (2021), "Structure of even-even Sr isotopes with 50 ≤N ≤58 neutrons", Physical Review C. Vol. 104(6) |
| Abstract: Excited levels in Sr90, Sr92, Sr94, and Sr96 nuclei were reinvestigated using high-statistics multiple-γ coincidence data from neutron-induced fission of U235 and spontaneous fission of Cf252, measured using Exogam at Institut Laue Langevin and Gammasphere arrays, respectively. The experimental goal was the search for new excited levels and firm spin-parity assignments to known levels. A total of 23 new levels with 30 new or corrected decays and 39 new or improved spin-parity assignments were obtained in the four nuclei. Negative-parity structures on top of 3- excitation were firmly identified and extended to higher spins. New positive-parity structures in Sr94 and Sr96 were observed with 3+ excitations characteristic of γ collectivity. The 277.7-keV, E2 decay from the 1507.0-keV level to the second 0+ level in Sr96, found in this paper, completes the coexisting deformed band in this nucleus. To learn about the microscopic structure of levels in the Sr88-96 nuclei, we performed large-scale shell-model calculations. The calculations compared to the experiment, helped the discussion of the evolution of collectivity in strontium isotopes, highlighting the important role of various single-particle excitations in phase transitions and shape coexistence in the region. The special role of the neutron 9/2+[404] extruder as a catalyst of the deformation change in the region is highlighted. © 2021 American Physical Society. |
BibTeX:
@article{Urban2021,
author = {Urban, W. and Sieja, K. and Rząca-Urban, T. and Wiśniewski, J. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A. and Smith, A.G. and Greene, J.P.},
title = {Structure of even-even Sr isotopes with 50≤N≤58 neutrons STRUCTURE OF EVEN-EVEN SR ISOTOPES WITH . W. URBAN et al.},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {6},
note = {Cited by: 5; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122518904&doi=10.1103%2fPhysRevC.104.064309&partnerID=40&md5=e7883b197ece3a6189b38440fee03fe2},
doi = {10.1103/PhysRevC.104.064309}
}
|
| Ziliani S, Ciemała M, Crespi F, Leoni S, Fornal B, Maj A,
Bednarczyk P, Benzoni G, Bracco A, Boiano C, Bottoni S, Brambilla S,
Bast M, Beckers M, Braunroth T, Camera F, Cieplicka-Oryńczak N,
Clément E, Coelli S, Dorvaux O, Erturk S, De France G, Fransen C,
Goldkuhle A, Grȩbosz J, Harakeh M, Iskra Ł, Jacquot B, Karpov A,
Kicińska-Habior M, Kim Y, Kmiecik M, Lemasson A, Lenzi S, Lewitowicz
M, Li H, Matea I, Mazurek K, Michelagnoli C, Matejska-Minda M,
Million B, Müller-Gatermann C, Nanal V, Napiorkowski P, Napoli D,
Palit R, Rejmund M, Schmitt C, Stanoiu M, Stefan I, Vardaci E,
Wasilewska B, Wieland O, Ziȩbliński M and Zielińska M (2021), "Lifetime analysis of short-lived states in 17N", Nuovo Cimento della Societa Italiana di Fisica C. Vol. 44(2-3) |
| Abstract: A recent extension of the Doppler-shift attenuation method to measure short lifetimes of states populated in low-energy binary reactions is applied to the case of 17N. The reliability of the technique is confirmed by measuring the lifetime of the 5515 keV 3/2 - state, which is depopulated by two different γ rays. The method is used to measure the lifetime of the 5170 keV (9/2+) state in the same nucleus. Comparisons with large-scale shell-model predictions are given as well. © 2021 Societa Italiana di Fisica. All rights reserved. |
BibTeX:
@article{Ziliani2021,
author = {Ziliani, S. and Ciemała, M. and Crespi, F.C.L. and Leoni, S. and Fornal, B. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Oryńczak, N. and Clément, E. and Coelli, S. and Dorvaux, O. and Erturk, S. and De France, G. and Fransen, C. and Goldkuhle, A. and Grȩbosz, J. and Harakeh, M.N. and Iskra, Ł.W. and Jacquot, B. and Karpov, A. and Kicińska-Habior, M. and Kim, Y. and Kmiecik, M. and Lemasson, A. and Lenzi, S.M. and Lewitowicz, M. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Matejska-Minda, M. and Million, B. and Müller-Gatermann, C. and Nanal, V. and Napiorkowski, P. and Napoli, D.R. and Palit, R. and Rejmund, M. and Schmitt, C. and Stanoiu, M. and Stefan, I. and Vardaci, E. and Wasilewska, B. and Wieland, O. and Ziȩbliński, M. and Zielińska, M.},
title = {Lifetime analysis of short-lived states in 17N},
journal = {Nuovo Cimento della Societa Italiana di Fisica C},
year = {2021},
volume = {44},
number = {2-3},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116573048&doi=10.1393%2fncc%2fi2021-21084-7&partnerID=40&md5=bbe7dcc87c47c3122df03cc4fc8dfb4f},
doi = {10.1393/ncc/i2021-21084-7}
}
|
| Ziliani S, Ciemała M, Crespi FCL, Leoni S, Fornal B, Suzuki T,
Otsuka T, Maj A, Bednarczyk P, Benzoni G, Bracco A, Boiano C,
Bottoni S, Brambilla S, Bast M, Beckers M, Braunroth T, Camera F,
Cieplicka-Oryńczak N, Clément E, Coelli S, Dorvaux O, Erturk S, de
France G, Fransen C, Goldkuhle A, Grębosz J, Harakeh M, Iskra ŁW,
Jacquot B, Karpov A, Kicińska-Habior M, Kim Y, Kmiecik M, Lemasson
A, Lenzi S, Lewitowicz M, Li H, Matea I, Mazurek K, Michelagnoli C,
Matejska-Minda M, Million B, Müller-Gatermann C, Nanal V,
Napiorkowski P, Napoli D, Palit R, Rejmund M, Schmitt C, Stanoiu M,
Stefan I, Vardaci E, Wasilewska B, Wieland O, Ziębliński M and
Zielińska M (2021), "Complete set of bound negative-parity states in the neutron-rich nucleus", Physical Review C. Vol. 104(4) |
| Abstract: High-resolution -ray spectroscopy of is performed with the Advanced GAmma Tracking Array, following deep-inelastic processes induced by an beam on a target. Six states are newly identified, which together with the three known excitations exhaust all negative-parity excited states expected in below the neutron threshold. Spin and parities are proposed for all located states on the basis of decay branchings and comparison with large-scale shell-model calculations performed in the p-sd space, with the YSOX interaction. Of particular interest is the location of the and excitations, which provide strong constrains for cross-shell p-sd matrix elements based on realistic interactions and help to simultaneously reproduce the ground and first-excited states in and , for the first time. Understanding the structure may also have significant impact on neutron-capture cross-section calculations in r-process modeling including light neutron-rich nuclei. ©2021 American Physical Society |
BibTeX:
@article{Ziliani2021,
author = {Ziliani, S. and Ciemała, M. and Crespi, F. C. L. and Leoni, S. and Fornal, B. and Suzuki, T. and Otsuka, T. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Oryńczak, N. and Clément, E. and Coelli, S. and Dorvaux, O. and Erturk, S. and de France, G. and Fransen, C. and Goldkuhle, A. and Grębosz, J. and Harakeh, M.N. and Iskra, Ł. W. and Jacquot, B. and Karpov, A. and Kicińska-Habior, M. and Kim, Y. and Kmiecik, M. and Lemasson, A. and Lenzi, S.M. and Lewitowicz, M. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Matejska-Minda, M. and Million, B. and Müller-Gatermann, C. and Nanal, V. and Napiorkowski, P. and Napoli, D.R. and Palit, R. and Rejmund, M. and Schmitt, CH. and Stanoiu, M. and Stefan, I. and Vardaci, E. and Wasilewska, B. and Wieland, O. and Ziębliński, M. and Zielińska, M.},
title = {Complete set of bound negative-parity states in the neutron-rich nucleus},
journal = {Physical Review C},
year = {2021},
volume = {104},
number = {4},
note = {Cited by: 8; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117406356&doi=10.1103%2fPhysRevC.104.L041301&partnerID=40&md5=8be2a341288685710804b3505b5f3b26},
doi = {10.1103/PhysRevC.104.L041301}
}
|
| Abel C, Afach S, Ayres N, Baker C, Ban G, Bison G, Bodek K, Bondar
V, Burghoff M, Chanel E, Chowdhuri Z, Chiu P-J, Clement B, Crawford
C, Daum M, Emmenegger S, Ferraris-Bouchez L, Fertl M, Flaux P,
Franke B, Fratangelo A, Geltenbort P, Green K, Griffith W, Van Der
Grinten M, Grujić Z, Harris P, Hayen L, Heil W, Henneck R, Hélaine
V, Hild N, Hodge Z, Horras M, Iaydjiev P, Ivanov S, Kasprzak M,
Kermaidic Y, Kirch K, Knecht A, Knowles P, Koch H-C, Koss P,
Komposch S, Kozela A, Kraft A, Krempel J, Kuźniak M, Lauss B, Lefort
T, Lemière Y, Leredde A, Mohanmurthy P, Mtchedlishvili A, Musgrave
M, Naviliat-Cuncic O, Pais D, Piegsa F, Pierre E, Pignol G,
Plonka-Spehr C, Prashanth P, Quéméner G, Rawlik M, Rebreyend D,
Rienäcker I, Ries D, Roccia S, Rogel G, Rozpedzik D, Schnabel A,
Schmidt-Wellenburg P, Severijns N, Shiers D, Tavakoli Dinani R,
Thorne J, Virot R, Voigt J, Weis A, Wursten E, Wyszynski G, Zejma J,
Zenner J and Zsigmond G (2020), "Measurement of the Permanent Electric Dipole Moment of the Neutron", Physical Review Letters. Vol. 124(8) |
| Abstract: We present the result of an experiment to measure the electric dipole moment (EDM) of the neutron at the Paul Scherrer Institute using Ramsey's method of separated oscillating magnetic fields with ultracold neutrons. Our measurement stands in the long history of EDM experiments probing physics violating time-reversal invariance. The salient features of this experiment were the use of a Hg199 comagnetometer and an array of optically pumped cesium vapor magnetometers to cancel and correct for magnetic-field changes. The statistical analysis was performed on blinded datasets by two separate groups, while the estimation of systematic effects profited from an unprecedented knowledge of the magnetic field. The measured value of the neutron EDM is dn=(0.0±1.1stat±0.2sys)×10-26 e.cm. © 2020 authors. Published by the American Physical Society. |
BibTeX:
@article{Abel2020,
author = {Abel, C. and Afach, S. and Ayres, N.J. and Baker, C.A. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Burghoff, M. and Chanel, E. and Chowdhuri, Z. and Chiu, P.-J. and Clement, B. and Crawford, C.B. and Daum, M. and Emmenegger, S. and Ferraris-Bouchez, L. and Fertl, M. and Flaux, P. and Franke, B. and Fratangelo, A. and Geltenbort, P. and Green, K. and Griffith, W.C. and Van Der Grinten, M. and Grujić, Z.D. and Harris, P.G. and Hayen, L. and Heil, W. and Henneck, R. and Hélaine, V. and Hild, N. and Hodge, Z. and Horras, M. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Knecht, A. and Knowles, P. and Koch, H.-C. and Koss, P.A. and Komposch, S. and Kozela, A. and Kraft, A. and Krempel, J. and Kuźniak, M. and Lauss, B. and Lefort, T. and Lemière, Y. and Leredde, A. and Mohanmurthy, P. and Mtchedlishvili, A. and Musgrave, M. and Naviliat-Cuncic, O. and Pais, D. and Piegsa, F.M. and Pierre, E. and Pignol, G. and Plonka-Spehr, C. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Rienäcker, I. and Ries, D. and Roccia, S. and Rogel, G. and Rozpedzik, D. and Schnabel, A. and Schmidt-Wellenburg, P. and Severijns, N. and Shiers, D. and Tavakoli Dinani, R. and Thorne, J.A. and Virot, R. and Voigt, J. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Measurement of the Permanent Electric Dipole Moment of the Neutron},
journal = {Physical Review Letters},
year = {2020},
volume = {124},
number = {8},
note = {Cited by: 273; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080921426&doi=10.1103%2fPhysRevLett.124.081803&partnerID=40&md5=0b037b86e5ecc149b2b4a21bd19bbc02},
doi = {10.1103/PhysRevLett.124.081803}
}
|
| Abel C, Afach S, Ayres N, Ban G, Bison G, Bodek K, Bondar V, Chanel E, Chiu P-J, Crawford C, Chowdhuri Z, Daum M, Emmenegger S, Ferraris-Bouchez L, Fertl M, Franke B, Griffith W, Grujić Z, Hayen L, Hélaine V, Hild N, Kasprzak M, Kermaidic Y, Kirch K, Knowles P, Koch H-C, Komposch S, Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Leredde A, Mtchedlishvili A, Mohanmurthy P, Musgrave M, Naviliat-Cuncic O, Pais D, Pazgalev A, Piegsa F, Pierre E, Pignol G, Prashanth P, Quéméner G, Rawlik M, Rebreyend D, Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Schnabel A, Severijns N, Dinani RT, Thorne J, Weis A, Wursten E, Wyszynski G, Zejma J and Zsigmond G (2020), "Optically pumped Cs magnetometers enabling a high-sensitivity search for the neutron electric dipole moment", Physical Review A. Vol. 101(5) |
| Abstract: An array of 16 laser-pumped scalar Cs magnetometers was part of the neutron electric dipole moment (nEDM) experiment taking data at the Paul Scherrer Institute in 2015 and 2016. It was deployed to measure the gradients of the experiment's magnetic field and to monitor their temporal evolution. The originality of the array lies in its compact design, in which a single near-infrared diode laser drives all magnetometers that are located in a high-vacuum chamber, with a selection of the sensors mounted on a high-voltage electrode. We describe details of the Cs sensors' construction and modes of operation, emphasizing the accuracy and sensitivity of the magnetic-field readout. We present two applications of the magnetometer array directly beneficial to the nEDM experiment: (i) the implementation of a strategy to correct for the drift of the vertical magnetic-field gradient and (ii) a procedure to homogenize the magnetic field. The first reduces the uncertainty of the nEDM result. The second enables transverse neutron spin relaxation times exceeding 1500 s, improving the statistical sensitivity of the nEDM experiment by about 35% and effectively increasing the rate of nEDM data taking by a factor of 1.8. © 2020 American Physical Society. |
BibTeX:
@article{Abel2020,
author = {Abel, C. and Afach, S. and Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Chanel, E. and Chiu, P.-J. and Crawford, C.B. and Chowdhuri, Z. and Daum, M. and Emmenegger, S. and Ferraris-Bouchez, L. and Fertl, M. and Franke, B. and Griffith, W.C. and Grujić, Z.D. and Hayen, L. and Hélaine, V. and Hild, N. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Knowles, P. and Koch, H.-C. and Komposch, S. and Koss, P.A. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Leredde, A. and Mtchedlishvili, A. and Mohanmurthy, P. and Musgrave, M. and Naviliat-Cuncic, O. and Pais, D. and Pazgalev, A. and Piegsa, F.M. and Pierre, E. and Pignol, G. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Dinani, R. Tavakoli and Thorne, J. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zsigmond, G.},
title = {Optically pumped Cs magnetometers enabling a high-sensitivity search for the neutron electric dipole moment},
journal = {Physical Review A},
year = {2020},
volume = {101},
number = {5},
note = {Cited by: 14; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085843175&doi=10.1103%2fPhysRevA.101.053419&partnerID=40&md5=a69285e035ada3d9288ba6621014b403},
doi = {10.1103/PhysRevA.101.053419}
}
|
| Banik R, Bhattacharyya S, Rejmund M, Lemasson A, Biswas S, Navin
A, Kim Y, Michelagnoli C, Stefan I, Bednarczyk P, Bhattacharya S,
Clément E, Crawford H, De France G, Fallon P, Frémont G, Goupil J,
Jacquot B, Li H, Ljungvall J, Maj A, Ménager L, Morel V, Mukherjee
G, Palit R, Pérez-Vidal R, Ropert J and Schmitt C (2020), "High-spin states above the isomers in neutron-rich iodine nuclei near N=82", Physical Review C. Vol. 102(4) |
| Abstract: Excited states of neutron-rich iodine isotopes I130-134 above the high-spin isomers have been identified using prompt-delayed γ-ray spectroscopy. The iodine isotopes were produced as fission fragments of fusion-fission and transfer induced fission of Be9(U238,f) at a beam energy of 6.2 MeV/u. The complete (A,Z) identification was obtained using the large acceptance magnetic spectrometer VAMOS++. The AGATA γ-ray tracking array was used to detect the prompt γ rays while the delayed γ rays (in the time range of 100 ns to 200 μs) from the isomeric states were identified by the EXOGAM segmented clover detectors, placed behind the focal plane of the VAMOS++ spectrometer. The high-spin states above the (8-) isomers in I130,132 were populated for the first time, and a new isomer in I132 was identified. A new γ-ray transition was also assigned to the level structure of I134. Prompt transitions above the 19/2- isomer were identified in I131,133, for the first time. The level structures are interpreted in terms of the systematics of odd-Z nuclei above the Z=50 shell closure and large-scale shell model calculations. © 2020 American Physical Society. |
BibTeX:
@article{Banik2020,
author = {Banik, R. and Bhattacharyya, S. and Rejmund, M. and Lemasson, A. and Biswas, S. and Navin, A. and Kim, Y.H. and Michelagnoli, C. and Stefan, I. and Bednarczyk, P. and Bhattacharya, Soumik and Clément, E. and Crawford, H.L. and De France, G. and Fallon, P. and Frémont, G. and Goupil, J. and Jacquot, B. and Li, H.J. and Ljungvall, J. and Maj, A. and Ménager, L. and Morel, V. and Mukherjee, G. and Palit, R. and Pérez-Vidal, R.M. and Ropert, J. and Schmitt, C.},
title = {High-spin states above the isomers in neutron-rich iodine nuclei near N=82},
journal = {Physical Review C},
year = {2020},
volume = {102},
number = {4},
note = {Cited by: 3; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096018063&doi=10.1103%2fPhysRevC.102.044329&partnerID=40&md5=b276bd150a3e0bbab4d45581829eff81},
doi = {10.1103/PhysRevC.102.044329}
}
|
| Casanovas A, Tarifeo-Saldivia A, Domingo-Pardo C, Calvio F,
Maugeri E, Guerrero C, Lerendegui-Marco J, Dressler R, Heinitz S,
Schumann D, Tain J, Quesada J, Aberle O, Alcayne V, Amaducci S,
Andrzejewski J, Audouin L, Babiano-Suarez V, Bacak M, Balibrea J,
Barbagallo M, Bennett S, Berthoumieux E, Bosnar D, Brown A, Busso M,
Caamao M, Caballero L, Calviani M, Cano-Ott D, Cerutti F, Chiaveri
E, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L, Cristallo S,
Damone L, Davies P, Diakaki M, Dietz M, Ducasse Q, Dupont E, Durn I,
Eleme Z, Fernndez-Domíngez B, Ferrari A, Ferro-Gonçalves I,
Finocchiaro P, Furman V, Garg R, Gawlik A, Gilardoni S, Göbel K,
Gonzlez-Romero E, Gunsing F, Heyse J, Jenkins D, Jericha E, Jiri U,
Junghans A, Kadi Y, Käppeler F, Kimura A, Knapov I, Kokkoris M,
Kopatch Y, Krticka M, Kurtulgil D, Ladarescu I, Lederer-Woods C,
Lonsdale S-J, Macina D, Manna A, Martínez T, Masi A, Massimi C,
Mastinu P, Mastromarco M, Mazzone A, Mendoza E, Mengoni A,
Michalopoulou V, Milazzo P, Milln-Callado M, Mingrone F, Moreno-Soto
J, Musumarra A, Negret A, Ogllar F, Oprea A, Patronis N, Pavlik A,
Perkowski J, Petrone C, Piersanti L, Pirovano E, Porras I, Praena J,
Ramos Doval D, Reifarth R, Rochman D, Rubbia C, Sabaté-Gilarte M,
Saxena A, Schillebeeckx P, Sekhar A, Smith A, Sosnin N, Sprung P,
Stamatopoulos A, Tagliente G, Tassan-Got L, Thomas B, Torres-Snchez
P, Tsinganis A, Urlass S, Valenta S, Vannini G, Variale V, Vaz P,
Ventura A, Vescovi D, Vlachoudis V, Vlastou R, Wallner A, Woods P,
Wright T, Žugec P and Koester U (2020), "Neutron capture measurement at the n TOF facility of the 204Tl and 205Tl s-process branching points", Journal of Physics: Conference Series. Vol. 1668(1) |
| Abstract: Neutron capture cross sections are one of the fundamental nuclear data in the study of the s (slow) process of nucleosynthesis. More interestingly, the competition between the capture and the decay rates in some unstable nuclei determines the local isotopic abundance pattern. Since decay rates are often sensible to temperature and electron density, the study of the nuclear properties of these nuclei can provide valuable constraints to the physical magnitudes of the nucleosynthesis stellar environment. Here we report on the capture cross section measurement of two thallium isotopes, 204Tl and 205Tl performed by the time-of-flight technique at the n TOF facility at CERN. At some particular stellar s-process environments, the decay of both nuclei is strongly enhanced, and determines decisively the abundance of two s-only isotopes of lead, 204Pb and 205Pb. The latter, as a long-lived radioactive nucleus, has potential use as a chronometer of the last s-process events that contributed to final solar isotopic abundances. © Published under licence by IOP Publishing Ltd. |
BibTeX:
@conference{Casanovas2020,
author = {Casanovas, A. and Tarifeo-Saldivia, A.E. and Domingo-Pardo, C. and Calvio, F. and Maugeri, E. and Guerrero, C. and Lerendegui-Marco, J. and Dressler, R. and Heinitz, S. and Schumann, D. and Tain, J.L. and Quesada, J.M. and Aberle, O. and Alcayne, V. and Amaducci, S. and Andrzejewski, J. and Audouin, L. and Babiano-Suarez, V. and Bacak, M. and Balibrea, J. and Barbagallo, M. and Bennett, S. and Berthoumieux, E. and Bosnar, D. and Brown, A.S. and Busso, M. and Caamao, M. and Caballero, L. and Calviani, M. and Cano-Ott, D. and Cerutti, F. and Chiaveri, E. and Colonna, N. and Cortés, G.P. and Cortés-Giraldo, M.A. and Cosentino, L. and Cristallo, S. and Damone, L.A. and Davies, P.J. and Diakaki, M. and Dietz, M. and Ducasse, Q. and Dupont, E. and Durn, I. and Eleme, Z. and Fernndez-Domíngez, B. and Ferrari, A. and Ferro-Gonçalves, I. and Finocchiaro, P. and Furman, V. and Garg, R. and Gawlik, A. and Gilardoni, S. and Göbel, K. and Gonzlez-Romero, E. and Gunsing, F. and Heyse, J. and Jenkins, D.G. and Jericha, E. and Jiri, U. and Junghans, A. and Kadi, Y. and Käppeler, F. and Kimura, A. and Knapov, I. and Kokkoris, M. and Kopatch, Y. and Krticka, M. and Kurtulgil, D. and Ladarescu, I. and Lederer-Woods, C. and Lonsdale, S.-J. and Macina, D. and Manna, A. and Martínez, T. and Masi, A. and Massimi, C. and Mastinu, P.F. and Mastromarco, M. and Mazzone, A. and Mendoza, E. and Mengoni, A. and Michalopoulou, V. and Milazzo, P.M. and Milln-Callado, M.A. and Mingrone, F. and Moreno-Soto, J. and Musumarra, A. and Negret, A. and Ogllar, F. and Oprea, A. and Patronis, N. and Pavlik, A. and Perkowski, J. and Petrone, C. and Piersanti, L. and Pirovano, E. and Porras, I. and Praena, J. and Ramos Doval, D. and Reifarth, R. and Rochman, D. and Rubbia, C. and Sabaté-Gilarte, M. and Saxena, A. and Schillebeeckx, P. and Sekhar, A. and Smith, A.G. and Sosnin, N. and Sprung, P. and Stamatopoulos, A. and Tagliente, G. and Tassan-Got, L. and Thomas, B. and Torres-Snchez, P. and Tsinganis, A. and Urlass, S. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vescovi, D. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Woods, P.J. and Wright, T.J. and Žugec, P. and Koester, U.},
title = {Neutron capture measurement at the n TOF facility of the 204Tl and 205Tl s-process branching points},
journal = {Journal of Physics: Conference Series},
year = {2020},
volume = {1668},
number = {1},
note = {Cited by: 1; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096356244&doi=10.1088%2f1742-6596%2f1668%2f1%2f012005&partnerID=40&md5=255dd15d15a75f859aa073d38e695fe5},
doi = {10.1088/1742-6596/1668/1/012005}
}
|
| Ciemała M, Ziliani S, Crespi F, Leoni S, Fornal B, Maj A,
Bednarczyk P, Benzoni G, Bracco A, Boiano C, Bottoni S, Brambilla S,
Bast M, Beckers M, Braunroth T, Camera F, Cieplicka-Oryńczak N,
Clément E, Coelli S, Dorvaux O, Erturk S, De France G, Fransen C,
Goldkuhle A, Grȩbosz J, Harakeh M, Iskra Ł, Jacquot B, Karpov A,
Kicińska-Habior M, Kim Y, Kmiecik M, Lemasson A, Lenzi S, Lewitowicz
M, Li H, Matea I, Mazurek K, Michelagnoli C, Matejska-Minda M,
Million B, Müller-Gatermann C, Nanal V, Napiorkowski P, Napoli D,
Palit R, Rejmund M, Schmitt C, Stanoiu M, Stefan I, Vardaci E,
Wasilewska B, Wieland O, Zieblinski M, Zielińska M, Ataç A,
Barrientos D, Birkenbach B, Boston A, Cederwall B, Charles L,
Collado J, Cullen D, Désesquelles P, Domingo-Pardo C, Dudouet J,
Eberth J, González V, Goupil J, Harkness-Brennan L, Hess H, Judson
D, Jungclaus A, Korten W, Labiche M, Lefevre A, Menegazzo R, Mengoni
D, Nyberg J, Perez-Vidal R, Podolyak Z, Pullia A, Recchia F, Reiter
P, Saillant F, Salsac M, Sanchis E, Stezowski O, Theisen C,
Valiente-Dobón J, Holt J, Menéndez J, Schwenk A and Simonis J
(2020), "Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2+ state in 16C and 20O", Physical Review C. Vol. 101(2) |
| Abstract: To test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2+ state in neutron-rich O20,τ(22+)=150-30+80fs, and an estimate for the lifetime of the second 2+ state in C16 have been obtained for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds of femtoseconds range by analyzing the Doppler-shifted γ-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction O18(7.0MeV/u)+Ta181. The requested sensitivity could only be reached owing to the excellent performances of the Advanced γ-Tracking Array AGATA, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer. The experimental lifetimes agree with predictions of ab initio calculations using two-and three-nucleon interactions, obtained with the valence-space in-medium similarity renormalization group for O20 and with the no-core shell model for C16. The present measurement shows the power of electromagnetic observables, determined with high-precision γ spectroscopy, to assess the quality of first-principles nuclear structure calculations, complementing common benchmarks based on nuclear energies. The proposed experimental approach will be essential for short lifetime measurements in unexplored regions of the nuclear chart, including r-process nuclei, when intense beams, produced by Isotope Separation On-Line (ISOL) techniques, become available. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
BibTeX:
@article{Ciemała2020,
author = {Ciemała, M. and Ziliani, S. and Crespi, F.C.L. and Leoni, S. and Fornal, B. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Oryńczak, N. and Clément, E. and Coelli, S. and Dorvaux, O. and Erturk, S. and De France, G. and Fransen, C. and Goldkuhle, A. and Grȩbosz, J. and Harakeh, M.N. and Iskra, Ł.W. and Jacquot, B. and Karpov, A. and Kicińska-Habior, M. and Kim, Y. and Kmiecik, M. and Lemasson, A. and Lenzi, S.M. and Lewitowicz, M. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Matejska-Minda, M. and Million, B. and Müller-Gatermann, C. and Nanal, V. and Napiorkowski, P. and Napoli, D.R. and Palit, R. and Rejmund, M. and Schmitt, Ch. and Stanoiu, M. and Stefan, I. and Vardaci, E. and Wasilewska, B. and Wieland, O. and Zieblinski, M. and Zielińska, M. and Ataç, A. and Barrientos, D. and Birkenbach, B. and Boston, A.J. and Cederwall, B. and Charles, L. and Collado, J. and Cullen, D.M. and Désesquelles, P. and Domingo-Pardo, C. and Dudouet, J. and Eberth, J. and González, V. and Goupil, J. and Harkness-Brennan, L.J. and Hess, H. and Judson, D.S. and Jungclaus, A. and Korten, W. and Labiche, M. and Lefevre, A. and Menegazzo, R. and Mengoni, D. and Nyberg, J. and Perez-Vidal, R.M. and Podolyak, Zs. and Pullia, A. and Recchia, F. and Reiter, P. and Saillant, F. and Salsac, M.D. and Sanchis, E. and Stezowski, O. and Theisen, Ch. and Valiente-Dobón, J.J. and Holt, J.D. and Menéndez, J. and Schwenk, A. and Simonis, J.},
title = {Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2+ state in C 16 and O 20},
journal = {Physical Review C},
year = {2020},
volume = {101},
number = {2},
note = {Cited by: 22; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082748861&doi=10.1103%2fPhysRevC.101.021303&partnerID=40&md5=66933dac1f69a81f3a445095c37bd024},
doi = {10.1103/PhysRevC.101.021303}
}
|
| Ciemała M, Ziliani S, Crespi F, Leoni S, Fornal B, Maj A,
Bednarczyk P, Benzoni G, Bracco A, Boiano C, Bottoni S, Brambilla S,
Bast M, Beckers M, Braunroth T, Camera F, Cieplicka-Orynczak N,
Clément E, Dorvaux O, Erturk S, De France G, Fransen C, Goldkuhle A,
Grebosz J, Harakeh M, Iskra Ł, Jacquot B, Karpov A, Kicinska-Habior
M, Kim Y, Kmiecik M, Lemasson A, Lenzi S, Lewitowicz M, Li H, Matea
I, Mazurek K, Michelagnoli C, Matejska-Minda M, Million B,
Müller-Gatermann C, Nanal V, Napiorkowski P, Napoli D, Palit R,
Rejmund M, Schmitt C, Stanoiu M, Stefan I, Vardaci E, Wasilewska B,
Wieland O, Zielinska M and Zieblinski M (2020), "Short-range lifetime measurements for deep-inelastic reaction products: The 19O test case", Acta Physica Polonica B. Vol. 51(3), pp. 699 – 708. |
| Abstract: An experiment, aiming at measuring lifetimes of excited states in neutron- rich C and O isotopes, was performed at the GANIL laboratory with the use of the AGATA segmented HPGe tracking array, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer. The nuclei of interest were populated in transfer and deep-inelastic processes induced by an 18O beam at 126 MeV (7.0 MeV/u) on a 181Ta target. This paper contains a brief description of a novel implementation of a Monte-Carlo technique, which allowed us to obtain excited states lifetimes in the range from tens to hundreds femtoseconds for a reaction with complex initial velocity distribution, making use of the Doppler-shift attenuation method (DSAM). As a test case, we present here the analysis for two states in 19O: 2371-keV 9=2+ and 2779-keV 7=2+, for which lifetimes of Γ > 400 fs and Γ = 140+50 -40 fs were obtained, respectively, in agreement with literature values. This newly developed approach will be essential for short lifetimes measurements in neutron-rich systems, exploiting intense ISOL-type beams, currently under development. © 2020 Jagellonian University. All rights reserved. |
BibTeX:
@article{Ciemała2020699,
author = {Ciemała, M. and Ziliani, S. and Crespi, F. and Leoni, S. and Fornal, B. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Orynczak, N. and Clément, E. and Dorvaux, O. and Erturk, S. and De France, G. and Fransen, C. and Goldkuhle, A. and Grebosz, J. and Harakeh, M.N. and Iskra, Ł.W. and Jacquot, B. and Karpov, A. and Kicinska-Habior, M. and Kim, Y. and Kmiecik, M. and Lemasson, A. and Lenzi, S.M. and Lewitowicz, M. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Matejska-Minda, M. and Million, B. and Müller-Gatermann, C. and Nanal, V. and Napiorkowski, P. and Napoli, D.R. and Palit, R. and Rejmund, M. and Schmitt, C. and Stanoiu, M. and Stefan, I. and Vardaci, E. and Wasilewska, B. and Wieland, O. and Zielinska, M. and Zieblinski, M.},
title = {Short-range lifetime measurements for deep-inelastic reaction products: The 19o test case},
journal = {Acta Physica Polonica B},
year = {2020},
volume = {51},
number = {3},
pages = {699 – 708},
note = {Cited by: 2; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085484963&doi=10.5506%2fAPhysPolB.51.699&partnerID=40&md5=6203ac36bbd063589871270fc8ac8180},
doi = {10.5506/APhysPolB.51.699}
}
|
| Cieplicka-Oryńczak N, Michelagnoli C, Gargano A, Fornal B, Leoni
S, Benzoni G, Blanc A, Bottoni S, Crespi F, Iskra Ł, Jentschel M,
Köster U, Mutti P, Pietralla N, Ruiz-Martinez E and Werner V (2020),
"Contrasting properties of particle-particle and hole-hole excitations in 206Tl and 210Bi nuclei", Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Vol. 802 |
| Abstract: A complete-spectroscopy investigation of low-lying, low-spin states in the one-proton-hole and one-neutron-hole nucleus 206Tl has been performed by using thermal neutron capture and γ-coincidence technique with the FIPPS Ge array at ILL Grenoble. The new experimental results, together with data for the one-proton-particle and one-neutron-particle nucleus 210Bi (taken from a previous study done at ILL in the EXILL campaign), allowed for an extensive comparison with predictions of shell-model calculations performed with realistic interactions. No phenomenological adjustments were introduced in the calculations. In 210Bi, state energies, transition multipolarities and decay branchings agree well with theory for the three well separated multiplets of states which dominate the low-lying excitations. On the contrary, in 206Tl significant discrepancies are observed: in the same energy region, six multiplets were identified, with a significant mixing among them being predicted, as a consequence of the smaller energy separation between the active orbitals. The discrepancies in 206Tl are attributed to the larger uncertainties in the determination of the off-diagonal matrix elements of the realistic shell-model interaction with respect to the calculated diagonal matrix elements, the only ones playing a major role in the case of 210Bi. The work points to the need of more advanced approaches in the construction of the realistic interactions. © 2020 The Authors |
BibTeX:
@article{Cieplicka-Oryńczak2020,
author = {Cieplicka-Oryńczak, N. and Michelagnoli, C. and Gargano, A. and Fornal, B. and Leoni, S. and Benzoni, G. and Blanc, A. and Bottoni, S. and Crespi, F.C.L. and Iskra, Ł.W. and Jentschel, M. and Köster, U. and Mutti, P. and Pietralla, N. and Ruiz-Martinez, E. and Werner, V.},
title = {Contrasting properties of particle-particle and hole-hole excitations in 206Tl and 210Bi nuclei},
journal = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
year = {2020},
volume = {802},
note = {Cited by: 8; All Open Access, Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078616732&doi=10.1016%2fj.physletb.2020.135222&partnerID=40&md5=2ae1d042ae8ae1087979302128ece23f},
doi = {10.1016/j.physletb.2020.135222}
}
|
| Crespi F, Cieplicka-Oryńczak N, Jentschel M, Kandzia F, Kim Y,
Köster U, Leoni S, Michelagnoli C and Ziliani S (2020), "GRIDSA: femtosecond lifetime measurements with germanium detector arrays", European Physical Journal A. Vol. 56(3) |
| Abstract: We demonstrate the possibility to extract nuclear state femtosecond lifetimes from two-step γ ray cascades measured with a Ge-detector array. The technique is based on measuring the Doppler shift of a γ ray, caused by the recoil of a preceding γ ray emission. Since the two γ rays are populating/de-populating the same state they form a start/stop signal, the delay of which is compared to the slowing down motion of the nucleus within the target material. A multi-detector array combined with digital acquisition electronics in list mode, allows to measure several angular combinations and two-step cascades efficiently and simultaneously within one single experiment. The concept was demonstrated with the FIPPS array for the 35Cl(n, γ) 36Cl reaction, where we obtained good agreement with literature values showing the validity of the method. © 2020, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature. |
BibTeX:
@article{Crespi2020,
author = {Crespi, F.C.L. and Cieplicka-Oryńczak, N. and Jentschel, M. and Kandzia, F. and Kim, Y.H. and Köster, U. and Leoni, S. and Michelagnoli, C. and Ziliani, S.},
title = {GRIDSA: femtosecond lifetime measurements with germanium detector arrays},
journal = {European Physical Journal A},
year = {2020},
volume = {56},
number = {3},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082464341&doi=10.1140%2fepja%2fs10050-020-00088-x&partnerID=40&md5=86f741d8b0bf6c95ecf68d6e76840139},
doi = {10.1140/epja/s10050-020-00088-x}
}
|
| Guerrero C, Lerendegui-Marco J, Paul M, Tessler M, Heinitz S,
Domingo-Pardo C, Cristallo S, Dressler R, Halfon S, Kivel N, Köster
U, Maugeri E, Palchan-Hazan T, Quesada J, Rochman D, Schumann D,
Weissman L, Aberle O, Amaducci S, Andrzejewski J, Audouin L, Bécares
V, Bacak M, Balibrea J, Barak A, Barbagallo M, Barros S, Bečvář F,
Beinrucker C, Berkovits D, Berthoumieux E, Billowes J, Bosnar D,
Brugger M, Buzaglo Y, Caamanõ M, Calvinõ F, Calviani M, Cano-Ott D,
Cardella R, Casanovas A, Castelluccio D, Cerutti F, Chen Y, Chiaveri
E, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L, Dafna H,
Damone A, Diakaki M, Dietz M, Dupont E, Durán I, Eisen Y,
Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P, Furman
V, Göbel K, Garciá A, Gawlik A, Glodariu T, Goncąlves I,
González-Romero E, Goverdovski A, Griesmayer E, Gunsing F, Harada H,
Heftrich T, Heyse J, Hirsh T, Jenkins D, Jericha E, Käppeler F, Kadi
Y, Kaizer B, Katabuchi T, Kavrigin P, Ketlerov V, Khryachkov V,
Kijel D, Kimura A, Kokkoris M, Kriesel A, Krtička M, Leal-Cidoncha
E, Lederer-Woods C, Leeb H, Lo Meo S, Lonsdale S, Losito R, MacIna
D, Manna A, Marganiec J, Martínez T, Massimi C, Mastinu P,
Mastromarco M, Matteucci F, Mendoza E, Mengoni A, Milazzo P,
Millán-Callado M, Mingrone F, Mirea M, Montesano S, Musumarra A,
Nolte R, Oprea A, Patronis N, Pavlik A, Perkowski J, Piersanti L,
Porras I, Praena J, Rajeev K, Rauscher T, Reifarth R,
Rodríguez-González T, Rout P, Rubbia C, Ryan J, Sabaté-Gilarte M,
Saxena A, Schillebeeckx P, Schmidt S, Shor A, Sedyshev P, Smith A,
Stamatopoulos A, Tagliente G, Tain J, Tarifenõ-Saldivia A,
Tassan-Got L, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P,
Ventura A, Vlachoudis V, Vlastou R, Wallner A, Warren S, Weigand M,
Weiss C, Wolf C, Woods P, Wright T and Žugec P (2020), "Neutron Capture on the s-Process Branching Point 171Tm via Time-of-Flight and Activation", Physical Review Letters. Vol. 125(14) |
| Abstract: The neutron capture cross sections of several unstable nuclides acting as branching points in the s process are crucial for stellar nucleosynthesis studies. The unstable Tm171 (t1/2=1.92 yr) is part of the branching around mass A∼170 but its neutron capture cross section as a function of the neutron energy is not known to date. In this work, following the production for the first time of more than 5 mg of Tm171 at the high-flux reactor Institut Laue-Langevin in France, a sample was produced at the Paul Scherrer Institute in Switzerland. Two complementary experiments were carried out at the neutron time-of-flight facility (n_TOF) at CERN in Switzerland and at the SARAF liquid lithium target facility at Soreq Nuclear Research Center in Israel by time of flight and activation, respectively. The result of the time-of-flight experiment consists of the first ever set of resonance parameters and the corresponding average resonance parameters, allowing us to make an estimation of the Maxwellian-averaged cross sections (MACS) by extrapolation. The activation measurement provides a direct and more precise measurement of the MACS at 30 keV: 384(40) mb, with which the estimation from the n_TOF data agree at the limit of 1 standard deviation. This value is 2.6 times lower than the JEFF-3.3 and ENDF/B-VIII evaluations, 25% lower than that of the Bao et al. compilation, and 1.6 times larger than the value recommended in the KADoNiS (v1) database, based on the only previous experiment. Our result affects the nucleosynthesis at the A∼170 branching, namely, the Yb171 abundance increases in the material lost by asymptotic giant branch stars, providing a better match to the available pre-solar SiC grain measurements compared to the calculations based on the current JEFF-3.3 model-based evaluation. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
BibTeX:
@article{Guerrero2020,
author = {Guerrero, C. and Lerendegui-Marco, J. and Paul, M. and Tessler, M. and Heinitz, S. and Domingo-Pardo, C. and Cristallo, S. and Dressler, R. and Halfon, S. and Kivel, N. and Köster, U. and Maugeri, E.A. and Palchan-Hazan, T. and Quesada, J.M. and Rochman, D. and Schumann, D. and Weissman, L. and Aberle, O. and Amaducci, S. and Andrzejewski, J. and Audouin, L. and Bécares, V. and Bacak, M. and Balibrea, J. and Barak, A. and Barbagallo, M. and Barros, S. and Bečvář, F. and Beinrucker, C. and Berkovits, D. and Berthoumieux, E. and Billowes, J. and Bosnar, D. and Brugger, M. and Buzaglo, Y. and Caamanõ, M. and Calvinõ, F. and Calviani, M. and Cano-Ott, D. and Cardella, R. and Casanovas, A. and Castelluccio, D.M. and Cerutti, F. and Chen, Y.H. and Chiaveri, E. and Colonna, N. and Cortés, G. and Cortés-Giraldo, M.A. and Cosentino, L. and Dafna, H. and Damone, A. and Diakaki, M. and Dietz, M. and Dupont, E. and Durán, I. and Eisen, Y. and Fernández-Domínguez, B. and Ferrari, A. and Ferreira, P. and Finocchiaro, P. and Furman, V. and Göbel, K. and Garciá, A.R. and Gawlik, A. and Glodariu, T. and Goncąlves, I.F. and González-Romero, E. and Goverdovski, A. and Griesmayer, E. and Gunsing, F. and Harada, H. and Heftrich, T. and Heyse, J. and Hirsh, T. and Jenkins, D.G. and Jericha, E. and Käppeler, F. and Kadi, Y. and Kaizer, B. and Katabuchi, T. and Kavrigin, P. and Ketlerov, V. and Khryachkov, V. and Kijel, D. and Kimura, A. and Kokkoris, M. and Kriesel, A. and Krtička, M. and Leal-Cidoncha, E. and Lederer-Woods, C. and Leeb, H. and Lo Meo, S. and Lonsdale, S.J. and Losito, R. and MacIna, D. and Manna, A. and Marganiec, J. and Martínez, T. and Massimi, C. and Mastinu, P. and Mastromarco, M. and Matteucci, F. and Mendoza, E. and Mengoni, A. and Milazzo, P.M. and Millán-Callado, M.A. and Mingrone, F. and Mirea, M. and Montesano, S. and Musumarra, A. and Nolte, R. and Oprea, A. and Patronis, N. and Pavlik, A. and Perkowski, J. and Piersanti, L. and Porras, I. and Praena, J. and Rajeev, K. and Rauscher, T. and Reifarth, R. and Rodríguez-González, T. and Rout, P.C. and Rubbia, C. and Ryan, J.A. and Sabaté-Gilarte, M. and Saxena, A. and Schillebeeckx, P. and Schmidt, S. and Shor, A. and Sedyshev, P. and Smith, A.G. and Stamatopoulos, A. and Tagliente, G. and Tain, J.L. and Tarifenõ-Saldivia, A. and Tassan-Got, L. and Tsinganis, A. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Warren, S. and Weigand, M. and Weiss, C. and Wolf, C. and Woods, P.J. and Wright, T. and Žugec, P.},
title = {Neutron Capture on the s-Process Branching Point Tm 171 via Time-of-Flight and Activation},
journal = {Physical Review Letters},
year = {2020},
volume = {125},
number = {14},
note = {Cited by: 17; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093364636&doi=10.1103%2fPhysRevLett.125.142701&partnerID=40&md5=8e5b600febefd272b7b11d92df2ed50a},
doi = {10.1103/PhysRevLett.125.142701}
}
|
| Iskra Ł, Leoni S, Fornal B, Michelagnoli C, Kandzia F, Mǎrginean
N, Barani M, Bottoni S, Cieplicka-Oryńczak N, Colombi G, Costache C,
Crespi F, Dudouet J, Jentschel M, Kim Y, Köster U, Lica R, Mǎrginean
R, Mihai C, Mihai R, Nita C, Pascu S, Porzio C, Reygadas D,
Ruiz-Martinez E and Turturica A (2020), "γ spectroscopy of the 96Y isotope: Searching for the onset of shape coexistence before N = 60", Physical Review C. Vol. 102(5) |
| Abstract: Medium and high spin states of the Y96 nucleus, located in the shape-coexistence region near Z=40 and N=60, were populated in thermal-neutron-induced fission of U233 and U235 targets, diluted in a scintillator. γ rays were measured with the FIssion Product Prompt γ-ray Spectrometer (FIPPS) high-purity germanium (HPGe) detector array, using double and triple γ-ray coincidence techniques and taking advantage of the efficient fission tag provided by the scintillating target material. A complex level scheme, extending up to 5.2 MeV and including excitations above the 8+β-decaying isomer, was investigated, and firm spin and parity assignments were given to a number of states, on the basis of angular correlation analysis and considerations on the γ-decay patterns. While the structures built on the 0- ground state and the 8+ isomer show irregular patterns typical for spherical shapes, the (6+) isomeric state at 1655 keV [with half-life of 181(9) ns], and the rotational band built on it [with spin-parity values between (6+) and (9+)], can be explained by Hartree-Fock-Bogoliubov calculations, if an oblate deformation is assumed. This is the first observation of a deformed structure in an N=57 isotone, lying three neutrons away from the N=60 line. An important finding is also the 115-keV transition which connects the (6+) 181(9)-ns isomer to the β-decaying 8+ spherical isomer, allowing us to firmly place the latter at 1541 keV excitation energy. This may be relevant for calculations of electron and antineutrino spectra from fission of actinides, for which Y96 is a prominent product. © 2020 American Physical Society. |
BibTeX:
@article{Iskra2020,
author = {Iskra, Ł.W. and Leoni, S. and Fornal, B. and Michelagnoli, C. and Kandzia, F. and Mǎrginean, N. and Barani, M. and Bottoni, S. and Cieplicka-Oryńczak, N. and Colombi, G. and Costache, C. and Crespi, F.C.L. and Dudouet, J. and Jentschel, M. and Kim, Y.H. and Köster, U. and Lica, R. and Mǎrginean, R. and Mihai, C. and Mihai, R.E. and Nita, C.R. and Pascu, S. and Porzio, C. and Reygadas, D. and Ruiz-Martinez, E. and Turturica, A.},
title = {γ spectroscopy of the y 96 isotope: Searching for the onset of shape coexistence before N=60},
journal = {Physical Review C},
year = {2020},
volume = {102},
number = {5},
note = {Cited by: 4},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097197361&doi=10.1103%2fPhysRevC.102.054324&partnerID=40&md5=2c7604374a115c0000b692885168ff04},
doi = {10.1103/PhysRevC.102.054324}
}
|
| Knafla L, Alexa P, Köster U, Thiamova G, Régis J-M, Jolie J, Blanc
A, Bruce A, Esmaylzadeh A, Fraile L, De France G, Häfner G, Ilieva
S, Jentschel M, Karayonchev V, Korten W, Kröll T, Lalkovski S, Leoni
S, Mach H, Mǎrginean N, Mutti P, Pascovici G, Paziy V, Podolyák Z,
Regan P, Roberts O, Saed-Samii N, Simpson G, Smith J, Soldner T,
Townsley C, Ur C, Urban W, Vancraeyenest A and Warr N (2020), "Lifetime measurements in the odd-A nucleus 177Hf", Physical Review C. Vol. 102(5) |
| Abstract: Lifetimes of low- and high-spin states in the odd-A nucleus Hf177 were measured during the EXILL&FATIMA campaign using a spectrometer equipped with eight HPGe-Clover detectors and 16 fast-timing LaBr3(Ce) detectors. For the determination of lifetimes in the pico- to nanosecond regime, the well-established generalized centroid difference method was used. Lifetimes of the 9/2-, 9/2+, 11/2-, 11/2+ states were remeasured, the lifetimes of the 13/2-, 17/2-, 13/2+, 15/2+, and 17/2+ states were determined for the first time and an upper limit for the 19/2+ state has been established. From these lifetimes absolute reduced transition probabilities were extracted and compared to particle-rotor-model calculations and quasiparticle-phonon-model calculations showing the importance of including multipole-multipole interactions in the description of odd-A nuclei in the rare earth region. © 2020 American Physical Society. |
BibTeX:
@article{Knafla2020,
author = {Knafla, L. and Alexa, P. and Köster, U. and Thiamova, G. and Régis, J.-M. and Jolie, J. and Blanc, A. and Bruce, A.M. and Esmaylzadeh, A. and Fraile, L.M. and De France, G. and Häfner, G. and Ilieva, S. and Jentschel, M. and Karayonchev, V. and Korten, W. and Kröll, T. and Lalkovski, S. and Leoni, S. and Mach, H. and Mǎrginean, N. and Mutti, P. and Pascovici, G. and Paziy, V. and Podolyák, Zs. and Regan, P.H. and Roberts, O.J. and Saed-Samii, N. and Simpson, G.S. and Smith, J.F. and Soldner, T. and Townsley, C. and Ur, C.A. and Urban, W. and Vancraeyenest, A. and Warr, N.},
title = {Lifetime measurements in the odd-A nucleus Hf 177},
journal = {Physical Review C},
year = {2020},
volume = {102},
number = {5},
note = {Cited by: 7; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097130017&doi=10.1103%2fPhysRevC.102.054322&partnerID=40&md5=ed0feef615eaaf91162ff7472c825461},
doi = {10.1103/PhysRevC.102.054322}
}
|
| Koseoglou P, Werner V, Pietralla N, Ilieva S, Nikšić T, Vretenar
D, Alexa P, Thürauf M, Bernards C, Blanc A, Bruce A, Cakirli R,
Cooper N, Fraile L, De France G, Jentschel M, Jolie J, Köster U,
Korten W, Kröll T, Lalkovski S, Mach H, Mǎrginean N, Mutti P, Patel
Z, Paziy V, Podolyák Z, Regan P, Régis J-M, Roberts O, Saed-Samii N,
Simpson G, Soldner T, Ur C, Urban W, Wilmsen D and Wilson E (2020),
"Low-Z boundary of the N = 88 – 90 shape phase transition: 148Ce near the critical point", Physical Review C. Vol. 101(1) |
| Abstract: Excited states of the neutron-rich nucleus Ce148 have been populated by neutron-induced fission of a U235 target. Its electromagnetic decays were studied by means of γ-ray coincidence spectroscopy with fast-timing capabilities. Lifetimes of the 21+ and 41+ states of Ce148 were obtained and their E2 decay rates deduced. The B4/2=B(E2;41+→21+)/B(E2;21+→01+) ratio indicates that Ce148 is a transitional nucleus while the N=88/90 shape phase transition evolves into a gradual change of nuclear deformation for proton numbers Z<60. © 2020 American Physical Society. |
BibTeX:
@article{Koseoglou2020,
author = {Koseoglou, P. and Werner, V. and Pietralla, N. and Ilieva, S. and Nikšić, T. and Vretenar, D. and Alexa, P. and Thürauf, M. and Bernards, C. and Blanc, A. and Bruce, A.M. and Cakirli, R.B. and Cooper, N. and Fraile, L.M. and De France, G. and Jentschel, M. and Jolie, J. and Köster, U. and Korten, W. and Kröll, T. and Lalkovski, S. and Mach, H. and Mǎrginean, N. and Mutti, P. and Patel, Z. and Paziy, V. and Podolyák, Zs. and Regan, P.H. and Régis, J.-M. and Roberts, O.J. and Saed-Samii, N. and Simpson, G.S. and Soldner, T. and Ur, C.A. and Urban, W. and Wilmsen, D. and Wilson, E.},
title = {Low- Z boundary of the N=88 -90 shape phase transition: Ce 148 near the critical point},
journal = {Physical Review C},
year = {2020},
volume = {101},
number = {1},
note = {Cited by: 10; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078109129&doi=10.1103%2fPhysRevC.101.014303&partnerID=40&md5=21ef263d4d4caff6362fc37fff2a607a},
doi = {10.1103/PhysRevC.101.014303}
}
|
| Leoni S, Fornal B, Marginean N, Michelagnoli C, Wilson J,
Sferrazza M, Tsunoda Y and Otsuka T (2020), "Shape-coexistence studies in the Ni isotopic chain by using the selectivity of different reaction mechanisms", Acta Physica Polonica B. Vol. 51(3), pp. 807 – 815. |
| Abstract: We report on the investigation of the shape coexistence phenomenon in the Ni isotopic chain, from A = 62 to A = 66, by using γ-ray spectroscopy techniques and different reaction mechanisms, such as sub-Coulomb barrier transfer reactions and thermal-neutron capture. Our aim is to understand, from the microscopic point of view, the appearance of nuclear deformation in Ni isotopes at low excitation energy. A series of experiments was performed at the Tandem Accelerator Laboratory in Bucharest, at ALTO IPN-Orsay and at the ILL reactor in Grenoble. Various mean-field theoretical approaches, as well as recent state-of-the-art Monte Carlo Shell Model (MCSM) calculations, predict in 66Ni a deep secondary prolate minimum in the nuclear potential energy surface at spin zero, resulting in a hindered electromagnetic decay towards the spherical ground state (i.e., with an E2 transition probability less than 1 W.u.). This has been confirmed in the first experiment performed in Bucharest. Less pronounced prolate minima, at higher excitation energies, are also expected in lighter neutron-rich Ni isotopes, from state-of-the-art Monte Carlo Shell Model (MCSM) calculations. Preliminary results are discussed for 62Ni and 64Ni, in comparison with theory predictions. © 2020 Jagellonian University. All rights reserved. |
BibTeX:
@article{Leoni2020807,
author = {Leoni, S. and Fornal, B. and Marginean, N. and Michelagnoli, C. and Wilson, J. and Sferrazza, M. and Tsunoda, Y. and Otsuka, T.},
title = {Shape-coexistence studies in the Ni isotopic chain by using the selectivity of different reaction mechanisms},
journal = {Acta Physica Polonica B},
year = {2020},
volume = {51},
number = {3},
pages = {807 – 815},
note = {Cited by: 0; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085504969&doi=10.5506%2fAPhysPolB.51.807&partnerID=40&md5=72f6685d9b6b8d83a084e346a8c3d803},
doi = {10.5506/APhysPolB.51.807}
}
|
| Mǎrginean N, Little D, Tsunoda Y, Leoni S, Janssens R, Fornal B,
Otsuka T, Michelagnoli C, Stan L, Crespi F, Costache C, Lica R,
Sferrazza M, Turturica A, Ayangeakaa A, Auranen K, Barani M, Bender
P, Bottoni S, Boromiza M, Bracco A, Cǎlinescu S, Campbell C,
Carpenter M, Chowdhury P, Ciemała M, Cieplicka-Oryczak N, Cline D,
Clisu C, Crawford H, Dinescu I, Dudouet J, Filipescu D, Florea N,
Forney A, Fracassetti S, Gade A, Gheorghe I, Hayes A, Harca I,
Henderson J, Ionescu A, Iskra ŁW, Jentschel M, Kandzia F, Kim Y,
Kondev F, Korschinek G, Köster U, Krishichayan, Krzysiek M,
Lauritsen T, Li J, Mǎrginean R, Maugeri E, Mihai C, Mihai R, Mitu A,
Mutti P, Negret A, Niţǎ C, Olǎcel A, Oprea A, Pascu S, Petrone C,
Porzio C, Rhodes D, Seweryniak D, Schumann D, Sotty C, Stolze S,
Şuvǎilǎ R, Toma S, Ujeniuc S, Walters W, Wu C, Wu J, Zhu S and
Ziliani S (2020), "Shape Coexistence at Zero Spin in Ni 64 Driven by the Monopole Tensor Interaction", Physical Review Letters. Vol. 125(10) |
| Abstract: The low-spin structure of the semimagic Ni64 nucleus has been considerably expanded: combining four experiments, several 0+ and 2+ excited states were identified below 4.5 MeV, and their properties established. The Monte Carlo shell model accounts for the results and unveils an unexpectedly complex landscape of coexisting shapes: a prolate 0+ excitation is located at a surprisingly high energy (3463 keV), with a collective 2+ state 286 keV above it, the first such observation in Ni isotopes. The evolution in excitation energy of the prolate minimum across the neutron N=40 subshell gap highlights the impact of the monopole interaction and its variation in strength with N. © 2020 authors. Published by the American Physical Society. |
BibTeX:
@article{Mǎrginean2020,
author = {Mǎrginean, N. and Little, D. and Tsunoda, Y. and Leoni, S. and Janssens, R.V.F. and Fornal, B. and Otsuka, T. and Michelagnoli, C. and Stan, L. and Crespi, F.C.L. and Costache, C. and Lica, R. and Sferrazza, M. and Turturica, A. and Ayangeakaa, A.D. and Auranen, K. and Barani, M. and Bender, P.C. and Bottoni, S. and Boromiza, M. and Bracco, A. and Cǎlinescu, S. and Campbell, C.M. and Carpenter, M.P. and Chowdhury, P. and Ciemała, M. and Cieplicka-Oryczak, N. and Cline, D. and Clisu, C. and Crawford, H.L. and Dinescu, I.E. and Dudouet, J. and Filipescu, D. and Florea, N. and Forney, A.M. and Fracassetti, S. and Gade, A. and Gheorghe, I. and Hayes, A.B. and Harca, I. and Henderson, J. and Ionescu, A. and Iskra, Ł. W. and Jentschel, M. and Kandzia, F. and Kim, Y.H. and Kondev, F.G. and Korschinek, G. and Köster, U. and Krishichayan and Krzysiek, M. and Lauritsen, T. and Li, J. and Mǎrginean, R. and Maugeri, E.A. and Mihai, C. and Mihai, R.E. and Mitu, A. and Mutti, P. and Negret, A. and Niţǎ, C.R. and Olǎcel, A. and Oprea, A. and Pascu, S. and Petrone, C. and Porzio, C. and Rhodes, D. and Seweryniak, D. and Schumann, D. and Sotty, C. and Stolze, S.M. and Şuvǎilǎ, R. and Toma, S. and Ujeniuc, S. and Walters, W.B. and Wu, C.Y. and Wu, J. and Zhu, S. and Ziliani, S.},
title = {Shape Coexistence at Zero Spin in Ni 64 Driven by the Monopole Tensor Interaction},
journal = {Physical Review Letters},
year = {2020},
volume = {125},
number = {10},
note = {Cited by: 19; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091470039&doi=10.1103%2fPhysRevLett.125.102502&partnerID=40&md5=557c1d56bf6a9a2135d83c23007c9e8d},
doi = {10.1103/PhysRevLett.125.102502}
}
|
| Paziy V, Fraile L, Mach H, Olaizola B, Simpson G, Aprahamian A,
Bernards C, Briz J, Bucher B, Chiara C, Dlouhý Z, Gheorghe I, Ghiţg
D, Hoff P, Jolie J, Köster U, Kurcewicz W, Licg R, Mgrginean N,
Mgrginean R, Régis J-M, Rudigier M, Sava T, Stgnoiu M, Stroe L and
Walters W (2020), "Fast-timing study of 81Ga from the β decay of 81Zn", Physical Review C. Vol. 102(1) |
| Abstract: The β- decay of Zn81 to the neutron magic N=50 nucleus Ga81, with only three valence protons with respect to Ni78, was investigated. The study was performed at the ISOLDE facility at CERN by means of γ spectroscopy. The Zn81 half-life was determined to be T1/2=290(4) ms while the β-delayed neutron emission probability was measured as Pn=23(4)%. The analysis of the β-gated γ-ray singles and γ-γ coincidences from the decay of Zn81 provides 47 new levels and 70 new transitions in Ga81. The β-n decay of Zn81 was observed and a new decay scheme into the odd-odd Ga80 nucleus was established. The half-lives of the first and second excited states of Ga81 were measured via the fast-timing method using LaBr3(Ce) detectors. The level scheme and transition rates are compared to large-scale shell-model calculations. The low-lying structure of Ga81 is interpreted in terms of the coupling of the three valence protons outside the doubly magic Ni78 core. © 2020 American Physical Society. |
BibTeX:
@article{Paziy2020,
author = {Paziy, V. and Fraile, L.M. and Mach, H. and Olaizola, B. and Simpson, G.S. and Aprahamian, A. and Bernards, C. and Briz, J.A. and Bucher, B. and Chiara, C.J. and Dlouhý, Z. and Gheorghe, I. and Ghiţg, D. and Hoff, P. and Jolie, J. and Köster, U. and Kurcewicz, W. and Licg, R. and Mgrginean, N. and Mgrginean, R. and Régis, J.-M. and Rudigier, M. and Sava, T. and Stgnoiu, M. and Stroe, L. and Walters, W.B.},
title = {Fast-timing study of Ga 81 from the β decay of Zn 81},
journal = {Physical Review C},
year = {2020},
volume = {102},
number = {1},
note = {Cited by: 1; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85093857811&doi=10.1103%2fPhysRevC.102.014329&partnerID=40&md5=f3e6b1bf6759d143b079e11363891b9f},
doi = {10.1103/PhysRevC.102.014329}
}
|
| Porzio C, Michelagnoli C, Cieplicka-Oryńczak N, Sferrazza M, Leoni
S, Fornal B, Tsunoda Y, Otsuka T, Bottoni S, Costache C, Crespi F,
Iskra ŁW, Jentschel M, Kandzia F, Kim Y-H, Köster U, Mǎrginean N,
Mihai C, Mutti P and Turturicǎ A (2020), "Detailed low-spin spectroscopy of 65Ni via neutron capture reaction", Physical Review C. Vol. 102(6) |
| Abstract: An extended investigation of the low-spin structure of the Ni65 nucleus was performed at the Institut Laue-Langevin, Grenoble, France, via the neutron capture reaction Ni64(n,γ)Ni65, using the Fission Product Prompt Gamma-Ray Spectrometer High-Purity Ge array. The level scheme of Ni65 was significantly expanded, with two new levels and 87 newly found transitions. Angular correlation analyses were also performed, allowing us to assign spins and parities for a number of states and to determine multipolarity mixing ratios for selected γ transitions. The low-energy part of the experimental level scheme (up to about 1.4 MeV) was compared with Monte Carlo shell-model calculations, which predict spherical shapes for all states, apart from the 9/2+ and the second excited 1/2- states of oblate deformation. © 2020 American Physical Society. |
BibTeX:
@article{Porzio2020,
author = {Porzio, C. and Michelagnoli, C. and Cieplicka-Oryńczak, N. and Sferrazza, M. and Leoni, S. and Fornal, B. and Tsunoda, Y. and Otsuka, T. and Bottoni, S. and Costache, C. and Crespi, F.C.L. and Iskra, Ł. W. and Jentschel, M. and Kandzia, F. and Kim, Y.-H. and Köster, U. and Mǎrginean, N. and Mihai, C. and Mutti, P. and Turturicǎ, A.},
title = {Detailed low-spin spectroscopy of Ni 65 via neutron capture reaction},
journal = {Physical Review C},
year = {2020},
volume = {102},
number = {6},
note = {Cited by: 2; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100241870&doi=10.1103%2fPhysRevC.102.064310&partnerID=40&md5=f1471cf6995d37489b9050e109d888b0},
doi = {10.1103/PhysRevC.102.064310}
}
|
| Ziliani S, Ciemała M, Crespi F, Leoni S, Fornal B, Maj A, Bednarczyk P, Benzoni G, Bracco A, Boiano C, Bottoni S, Brambilla S, Bast M, Beckers M, Braunroth T, Camera F, Cieplicka-Oryńczak N, Clément E, Coelli S, Dorvaux O, Erturk S, De France G, Fransen C, Goldkuhle A, Grȩbosz J, Harakeh M, Iskra Ł, Jacquot B, Karpov A, Kicińska-Habior M, Kim Y, Kmiecik M, Lemasson A, Lenzi S, Lewitowicz M, Li H, Matea I, Mazurek K, Michelagnoli C, Matejska-Minda M, Million B, Müller-Gatermann C, Nanal V, Napiorkowski P, Napoli D, Palit R, Rejmund M, Schmitt C, Stanoiu M, Stefan I, Vardaci E, Wasilewska B, Wieland O, Ziȩbliński M and Zielińska M (2020), "Spectroscopy of neutron-rich nitrogen isotopes with Agata+Paris+Vamos", Acta Physica Polonica B. Vol. 51(3), pp. 709 – 716. |
| Abstract: Excited states of 17N, 18N and 19N were investigated through the measurement of gamma rays, following their population via deep-inelastic reactions induced by an 18O beam (7 MeV/u) on a thick 181Ta target. The experimental setup comprised the AGATA+PARIS detection system, coupled to the VAMOS++ magnetic spectrometer. In the 17N nucleus, the analysis of gamma-ray transitions de-exciting two states around 4-5 MeV clearly pointed to discrepancies with the lifetime values reported in literature. Three new gamma rays were observed in 18N at the energies of 1662.3 (3) keV, 2073.4 (8) keV and 2300.9 (8) keV, and hints for other two new transitions around 1566 keV and 1720 keV were found. In addition, a new transition with energy of 2489.7 (8) keV was observed in 19N. © 2020 Jagellonian University. All rights reserved. |
BibTeX:
@article{Ziliani2020709,
author = {Ziliani, S. and Ciemała, M. and Crespi, F.C.L. and Leoni, S. and Fornal, B. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Oryńczak, N. and Clément, E. and Coelli, S. and Dorvaux, O. and Erturk, S. and De France, G. and Fransen, C. and Goldkuhle, A. and Grȩbosz, J. and Harakeh, M.N. and Iskra, Ł.W. and Jacquot, B. and Karpov, A. and Kicińska-Habior, M. and Kim, Y. and Kmiecik, M. and Lemasson, A. and Lenzi, S.M. and Lewitowicz, M. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Matejska-Minda, M. and Million, B. and Müller-Gatermann, C. and Nanal, V. and Napiorkowski, P. and Napoli, D.R. and Palit, R. and Rejmund, M. and Schmitt, Ch and Stanoiu, M. and Stefan, I. and Vardaci, E. and Wasilewska, B. and Wieland, O. and Ziȩbliński, M. and Zielińska, M.},
title = {Spectroscopy of neutron-rich nitrogen isotopes with Agata+Paris+Vamos},
journal = {Acta Physica Polonica B},
year = {2020},
volume = {51},
number = {3},
pages = {709 – 716},
note = {Cited by: 3; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085473602&doi=10.5506%2fAPhysPolB.51.709&partnerID=40&md5=73404a7d1cd092170e438b9d25408627},
doi = {10.5506/APhysPolB.51.709}
}
|
| Abel C, Ayres N, Baker T, Ban G, Bison G, Bodek K, Bondar V,
Crawford C, Chiu P-J, Chanel E, Chowdhuri Z, Daum M, Dechenaux B,
Emmenegger S, Ferraris-Bouchez L, Flaux P, Geltenbort P, Green K,
Griffith W, Van Der Grinten M, Harris P, Henneck R, Hild N, Iaydjiev
P, Ivanov S, Kasprzak M, Kermaidic Y, Kirch K, Koch H-C, Komposch S,
Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Lemiere Y, Leredde
A, Mohanmurthy P, Pais D, Piegsa F, Pignol G, Quéméner G, Rawlik M,
Rebreyend D, Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P,
Schnabel A, Severijns N, Virot R, Weis A, Wursten E, Wyszynski G,
Zejma J and Zsigmond G (2019), "Magnetic-field uniformity in neutron electric-dipole-moment experiments", Physical Review A. Vol. 99(4) |
| Abstract: Magnetic-field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of nonuniformities: depolarization of ultracold neutrons and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber neutron electric-dipole-moment apparatus installed at the Paul Scherrer Institute. © 2019 American Physical Society. |
BibTeX:
@article{Abel2019,
author = {Abel, C. and Ayres, N.J. and Baker, T. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Crawford, C.B. and Chiu, P.-J. and Chanel, E. and Chowdhuri, Z. and Daum, M. and Dechenaux, B. and Emmenegger, S. and Ferraris-Bouchez, L. and Flaux, P. and Geltenbort, P. and Green, K. and Griffith, W.C. and Van Der Grinten, M. and Harris, P.G. and Henneck, R. and Hild, N. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Koch, H.-C. and Komposch, S. and Koss, P.A. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemiere, Y. and Leredde, A. and Mohanmurthy, P. and Pais, D. and Piegsa, F.M. and Pignol, G. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Virot, R. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zsigmond, G.},
title = {Magnetic-field uniformity in neutron electric-dipole-moment experiments},
journal = {Physical Review A},
year = {2019},
volume = {99},
number = {4},
note = {Cited by: 16; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064861275&doi=10.1103%2fPhysRevA.99.042112&partnerID=40&md5=944d57854263d34a6571b1a2428c0501},
doi = {10.1103/PhysRevA.99.042112}
}
|
| Barzakh A, Cubiss J, Andreyev A, Seliverstov M, Andel B, Antalic
S, Ascher P, Atanasov D, Beck D, Bieroń J, Blaum K, Borgmann C,
Breitenfeldt M, Capponi L, Cocolios T, Day Goodacre T, Derkx X, De
Witte H, Elseviers J, Fedorov D, Fedosseev V, Fritzsche S, Gaffney
L, George S, Ghys L, Heßberger F, Huyse M, Imai N, Kalaninová Z,
Kisler D, Köster U, Kowalska M, Kreim S, Lane J, Liberati V, Lunney
D, Lynch K, Manea V, Marsh B, Mitsuoka S, Molkanov P, Nagame Y,
Neidherr D, Nishio K, Ota S, Pauwels D, Popescu L, Radulov D,
Rapisarda E, Revill J, Rosenbusch M, Rossel R, Rothe S, Sandhu K,
Schweikhard L, Sels S, Truesdale V, Van Beveren C, Van Den Bergh P,
Van Duppen P, Wakabayashi Y, Wendt K, Wienholtz F, Whitmore B,
Wilson G, Wolf R and Zuber K (2019), "Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in 217,218,219At revealed by in-source laser spectroscopy", Physical Review C. Vol. 99(5) |
| Abstract: Hyperfine-structure parameters and isotope shifts for the 795-nm atomic transitions in At217,218,219 have been measured at CERN-ISOLDE, using the in-source resonance-ionization spectroscopy technique. Magnetic dipole and electric quadrupole moments, and changes in the nuclear mean-square charge radii, have been deduced. A large inverse odd-even staggering in radii, which may be associated with the presence of octupole collectivity, has been observed. Namely, the radius of the odd-odd isotope At218 has been found to be larger than the average of its even-N neighbors, At217,219. The discrepancy between the additivity-rule prediction and experimental data for the magnetic moment of At218 also supports the possible presence of octupole collectivity in the considered nuclei. © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
BibTeX:
@article{Barzakh2019,
author = {Barzakh, A.E. and Cubiss, J.G. and Andreyev, A.N. and Seliverstov, M.D. and Andel, B. and Antalic, S. and Ascher, P. and Atanasov, D. and Beck, D. and Bieroń, J. and Blaum, K. and Borgmann, Ch. and Breitenfeldt, M. and Capponi, L. and Cocolios, T.E. and Day Goodacre, T. and Derkx, X. and De Witte, H. and Elseviers, J. and Fedorov, D.V. and Fedosseev, V.N. and Fritzsche, S. and Gaffney, L.P. and George, S. and Ghys, L. and Heßberger, F.P. and Huyse, M. and Imai, N. and Kalaninová, Z. and Kisler, D. and Köster, U. and Kowalska, M. and Kreim, S. and Lane, J.F.W. and Liberati, V. and Lunney, D. and Lynch, K.M. and Manea, V. and Marsh, B.A. and Mitsuoka, S. and Molkanov, P.L. and Nagame, Y. and Neidherr, D. and Nishio, K. and Ota, S. and Pauwels, D. and Popescu, L. and Radulov, D. and Rapisarda, E. and Revill, J.P. and Rosenbusch, M. and Rossel, R.E. and Rothe, S. and Sandhu, K. and Schweikhard, L. and Sels, S. and Truesdale, V.L. and Van Beveren, C. and Van Den Bergh, P. and Van Duppen, P. and Wakabayashi, Y. and Wendt, K.D.A. and Wienholtz, F. and Whitmore, B.W. and Wilson, G.L. and Wolf, R.N. and Zuber, K.},
title = {Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in at 217,218,219 revealed by in-source laser spectroscopy},
journal = {Physical Review C},
year = {2019},
volume = {99},
number = {5},
note = {Cited by: 13; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065885198&doi=10.1103%2fPhysRevC.99.054317&partnerID=40&md5=2f66f15e5251808603e253919eb0ea01},
doi = {10.1103/PhysRevC.99.054317}
}
|
| Biswas S, Lemasson A, Rejmund M, Navin A, Kim Y, Michelagnoli C,
Stefan I, Banik R, Bednarczyk P, Bhattacharya S, Bhattacharyya S,
Clément E, Crawford H, De France G, Fallon P, Frémont G, Goupil J,
Jacquot B, Li H, Ljungvall J, Maj A, Ménager L, Morel V, Palit R,
Pérez-Vidal R, Ropert J, Barrientos D, Benzoni G, Birkenbach B,
Boston A, Boston H, Cederwall B, Collado J, Cullen D, Désesquelles
P, Domingo-Pardo C, Dudouet J, Eberth J, González V,
Harkness-Brennan L, Hess H, Jungclaus A, Korten W, Labiche M,
Lefevre A, Menegazzo R, Mengoni D, Million B, Napoli D, Pullia A,
Quintana B, Ralet D, Recchia F, Reiter P, Saillant F, Salsac M,
Sanchis E, Stezowski O, Theisen C, Valiente-Dobón J and Zielińska M
(2019), "Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich 122-13151Sb isotopes", Physical Review C. Vol. 99(6) |
| Abstract: Background: Levels fulfilling the seniority scheme and relevant isomers are commonly observed features in semimagic nuclei; for example, in Sn isotopes (Z=50). Seniority isomers in Sn, with dominantly pure neutron configurations, directly probe the underlying neutron-neutron (νν) interaction. Furthermore, an addition of a valence proton particle or hole, through neutron-proton (νπ) interaction, affects the neutron seniority as well as the angular momentum. Purpose: Benchmark the reproducibility of the experimental observables, like the excitation energies (EX) and the reduced electric-quadrupole transition probabilities [B(E2)], with the results obtained from shell-model interactions for neutron-rich Sn and Sb isotopes with N<82. Study the sensitivity of the aforementioned experimental observables to the model interaction components. Furthermore, explore from a microscopic point of view the structural similarity between the isomers in Sn and Sb, and thus the importance of the valence proton. Methods: The neutron-rich Sb122-131 isotopes were produced as fission fragments in the reaction Be9(U238, f) with 6.2 MeV/u beam energy. A unique setup, consisting of AGATA, VAMOS++, and EXOGAM detectors, was used which enabled the prompt-delayed γ-ray spectroscopy of fission fragments in the time range of 100 ns to 200μs. Results: New isomers and prompt and delayed transitions were established in the even-A Sb122-130 isotopes. In the odd-A Sb123-131 isotopes, new prompt and delayed γ-ray transitions were identified, in addition to the confirmation of the previously known isomers. The half-lives of the isomeric states and the B(E2) transition probabilities of the observed transitions depopulating these isomers were extracted. Conclusions: The experimental data was compared with the theoretical results obtained in the framework of large-scale shell-model (LSSM) calculations in a restricted model space. Modifications of several components of the shell-model interaction were introduced to obtain a consistent agreement with the excitation energies and the B(E2) transition probabilities in neutron-rich Sn and Sb isotopes. The isomeric configurations in Sn and Sb were found to be relatively pure. Furthermore, the calculations revealed that the presence of a single valence proton, mainly in the g7/2 orbital in Sb isotopes, leads to significant mixing (due to the νπ interaction) of (i) the neutron seniorities (υν) and (ii) the neutron angular momentum (Iν). The above features have a weak impact on the excitation energies, but have an important impact on the B(E2) transition probabilities. In addition, a constancy of the relative excitation energies irrespective of neutron seniority and neutron number in Sn and Sb was observed. © 2019 authors. Published by the American Physical Society. |
BibTeX:
@article{Biswas2019,
author = {Biswas, S. and Lemasson, A. and Rejmund, M. and Navin, A. and Kim, Y.H. and Michelagnoli, C. and Stefan, I. and Banik, R. and Bednarczyk, P. and Bhattacharya, S. and Bhattacharyya, S. and Clément, E. and Crawford, H.L. and De France, G. and Fallon, P. and Frémont, G. and Goupil, J. and Jacquot, B. and Li, H.J. and Ljungvall, J. and Maj, A. and Ménager, L. and Morel, V. and Palit, R. and Pérez-Vidal, R.M. and Ropert, J. and Barrientos, D. and Benzoni, G. and Birkenbach, B. and Boston, A.J. and Boston, H.C. and Cederwall, B. and Collado, J. and Cullen, D.M. and Désesquelles, P. and Domingo-Pardo, C. and Dudouet, J. and Eberth, J. and González, V. and Harkness-Brennan, L.J. and Hess, H. and Jungclaus, A. and Korten, W. and Labiche, M. and Lefevre, A. and Menegazzo, R. and Mengoni, D. and Million, B. and Napoli, D.R. and Pullia, A. and Quintana, B. and Ralet, D. and Recchia, F. and Reiter, P. and Saillant, F. and Salsac, M.D. and Sanchis, E. and Stezowski, O. and Theisen, Ch. and Valiente-Dobón, J.J. and Zielińska, M.},
title = {Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich Sb 51122-131 isotopes},
journal = {Physical Review C},
year = {2019},
volume = {99},
number = {6},
note = {Cited by: 11; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067355104&doi=10.1103%2fPhysRevC.99.064302&partnerID=40&md5=b91cbd23c9e82bd0fe3165a7c8ceb67b},
doi = {10.1103/PhysRevC.99.064302}
}
|
| Bottoni S, Iskra Ł, Leoni S, Fornal B, Colò G, Bazzacco D, Gatti
L, Benzoni G, Blanc A, Bocchi G, Bracco A, Cieplicka-Oryńczak N,
Crespi F, Jentschel M, Köster U, Michelagnoli C, Million B, Mutti P,
Soldner T, Ur C and Urban W (2019), "Investigating core excitations in the 131Sn one-valence-hole nucleus", Acta Physica Polonica B. Vol. 50(3), pp. 285 – 290. |
| Abstract: The structure of the 131 Sn nucleus was studied at the Institut Laue-Langevin by prompt-delayed γ-ray spectroscopy across the 0.3 µs, 23/2 − isomeric state at 4670 keV, following cold-neutron-induced fission of 235 U and 241 Pu targets. New γ-ray transitions are observed and the results are compared with theoretical calculations performed with the Hybrid Configuration Mixing Model. The latter suggests that the majority of the states can be well-described in terms of couplings between single-hole degrees of freedom and 132 Sn core excitations, pointing to a robust neutron shell closure at N = 82. © 2019 Jagellonian University. All Rights Reserved. |
BibTeX:
@article{Bottoni2019285,
author = {Bottoni, S. and Iskra, Ł.W. and Leoni, S. and Fornal, B. and Colò, G. and Bazzacco, D. and Gatti, L. and Benzoni, G. and Blanc, A. and Bocchi, G. and Bracco, A. and Cieplicka-Oryńczak, N. and Crespi, F.C.L. and Jentschel, M. and Köster, U. and Michelagnoli, C. and Million, B. and Mutti, P. and Soldner, T. and Ur, C.A. and Urban, W.},
title = {Investigating core excitations in the 131 Sn one-valence-hole nucleus ∗},
journal = {Acta Physica Polonica B},
year = {2019},
volume = {50},
number = {3},
pages = {285 – 290},
note = {Cited by: 3; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063695216&doi=10.5506%2fAPhysPolB.50.285&partnerID=40&md5=26ac71e74e600520d465a120ebc73afe},
doi = {10.5506/APhysPolB.50.285}
}
|
| Damone L, Barbagallo M, Mastromarco M, Mengoni A, Colonna N,
Cosentino L, Maugeri E, Heinitz S, Schumann D, Dressler R, Käppeler
F, Finocchiaro P, Andrzejewski J, Perkowski J, Gawlik A, Aberle O,
Altstadt S, Ayranov M, Audouin L, Bacak M, Balibrea-Correa J, Ballof
J, Bcares V, Bečvař F, Beinrucker C, Bellia G, Bernardes A,
Berthoumieux E, Billowes J, Borge M, Bosnar D, Brown A, Brugger M,
Busso M, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Cardella R,
Casanovas A, Castelluccio D, Catherall R, Cerutti F, Chen Y,
Chiaveri E, Corts G, Cortès-Giraldo M, Cristallo S, Diakaki M, Dietz
M, Domingo-Pardo C, Dorsival A, Dupont E, Durán I,
Fernàndez-Dominguez B, Ferrari A, Ferreira P, Furman W, Ganesan S,
Garca-Rios A, Gilardoni S, Glodariu T, Göbel K, Gonçalves I,
Gonzalez-Romero E, Goodacre T, Griesmayer E, Guerrero C, Gunsing F,
Harada H, Heftrich T, Heyse J, Jenkins D, Jericha E, Johnston K,
Kadi Y, Kalamara A, Katabuchi T, Kavrigin P, Kimura A, Kivel N,
Kohester U, Kokkoris M, Krtička M, Kurtulgil D, Leal-Cidoncha E,
Lederer-Woods C, Leeb H, Lerendegui-Marco J, Lo Meo S, Lonsdale S,
Losito R, Macina D, Marganiec J, Marsh B, Martínez T, Martins
Correia J, Masi A, Massimi C, Mastinu P, Matteucci F, Mazzone A,
Mendoza E, Milazzo P, Mingrone F, Mirea M, Musumarra A, Negret A,
Nolte R, Oprea A, Patronis N, Pavlik A, Piersanti L, Piscopo M,
Plompen A, Porras I, Praena J, Quesada J, Radeck D, Rajeev K,
Rauscher T, Reifarth R, Riego-Perez A, Rothe S, Rout P, Rubbia C,
Ryan J, Sabaté-Gilarte M, Saxena A, Schell J, Schillebeeckx P,
Schmidt S, Sedyshev P, Seiffert C, Smith A, Sosnin N, Stamatopoulos
A, Stora T, Tagliente G, Tain J, Tarifeño-Saldivia A, Tassan-Got L,
Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A,
Vlachoudis V, Vlastou R, Wallner A, Warren S, Weigand M, Weiß C,
Wolf C, Woods P, Wright T and Žugec P (2019), "7Be(n,p)7Li Cross Section Measurement for the Cosmological Lithium Problem at the n_TOF Facility at CERN", Springer Proceedings in Physics. Vol. 219, pp. 25 – 32. |
| Abstract: One of the most puzzling problems in Nuclear Astrophysics is the “Cosmological Lithium Problem”, i.e the discrepancy between the primordial abundance of Li observed in metal poor halo stars (Asplund et al. in Astrophys J 644:229–259, 2006, [1]), and the one predicted by Big Bang Nucleosynthesis (BBN). One of the reactions that could have an impact on the problem is Be(n,p) Li. Despite of the importance of this reaction in BBN, the cross-section has never been directly measured at the energies of interest for BBN. Taking advantage of the innovative features of the second experimental area at the n TOF facility at CERN (Sabate-Gilarte et al. in Eur Phys J A 53:210, 2017, [2]; Weiss et al. in NIMA 799:90, 2015, [3]), an accurate measurement of Be(n,p) cross section has been recently performed at n TOF, with a pure Be target produced by implantation of a Be beam at ISOLDE. The mesurement started in April 2016 and lasted for two months. The experimental procedure, the setup used in the measurement and the results obtained so far will be here presented. © 2019, Springer Nature Switzerland AG. |
BibTeX:
@conference{Damone201925,
author = {Damone, L.A. and Barbagallo, M. and Mastromarco, M. and Mengoni, A. and Colonna, N. and Cosentino, L. and Maugeri, E.A. and Heinitz, S. and Schumann, D. and Dressler, R. and Käppeler, F. and Finocchiaro, P. and Andrzejewski, J. and Perkowski, J. and Gawlik, A. and Aberle, O. and Altstadt, S. and Ayranov, M. and Audouin, L. and Bacak, M. and Balibrea-Correa, J. and Ballof, J. and Bcares, V. and Bečvař, F. and Beinrucker, C. and Bellia, G. and Bernardes, A.P. and Berthoumieux, E. and Billowes, J. and Borge, M.J.G. and Bosnar, D. and Brown, A. and Brugger, M. and Busso, Maurizio and Caamaño, M. and Calviño, F. and Calviani, M. and Cano-Ott, D. and Cardella, R. and Casanovas, A. and Castelluccio, D.M. and Catherall, R. and Cerutti, F. and Chen, Y.H. and Chiaveri, E. and Corts, G. and Cortès-Giraldo, M.A. and Cristallo, Sergio and Diakaki, M. and Dietz, M. and Domingo-Pardo, C. and Dorsival, A. and Dupont, E. and Durán, I. and Fernàndez-Dominguez, B. and Ferrari, A. and Ferreira, P. and Furman, W. and Ganesan, S. and Garca-Rios, A. and Gilardoni, S. and Glodariu, T. and Göbel, Kathrin and Gonçalves, I.F. and Gonzalez-Romero, E. and Goodacre, T.D. and Griesmayer, E. and Guerrero, C. and Gunsing, F. and Harada, H. and Heftrich, Tanja and Heyse, J. and Jenkins, D.G. and Jericha, E. and Johnston, K. and Kadi, Y. and Kalamara, A. and Katabuchi, T. and Kavrigin, P. and Kimura, A. and Kivel, N. and Kohester, U. and Kokkoris, M. and Krtička, M. and Kurtulgil, Deniz and Leal-Cidoncha, E. and Lederer-Woods, Claudia and Leeb, H. and Lerendegui-Marco, J. and Lo Meo, S. and Lonsdale, S.J. and Losito, R. and Macina, D. and Marganiec, J. and Marsh, B. and Martínez, T. and Martins Correia, J.G. and Masi, A. and Massimi, C. and Mastinu, P. and Matteucci, F. and Mazzone, A. and Mendoza, E. and Milazzo, P.M. and Mingrone, Federica and Mirea, M. and Musumarra, A. and Negret, A. and Nolte, R. and Oprea, A. and Patronis, N. and Pavlik, A. and Piersanti, Luciano and Piscopo, M. and Plompen, A. and Porras, I. and Praena, J. and Quesada, J.M. and Radeck, D. and Rajeev, K. and Rauscher, Thomas and Reifarth, René and Riego-Perez, A. and Rothe, S. and Rout, P. and Rubbia, C. and Ryan, J. and Sabaté-Gilarte, M. and Saxena, A. and Schell, J. and Schillebeeckx, P. and Schmidt, S. and Sedyshev, P. and Seiffert, C. and Smith, A.G. and Sosnin, N.V. and Stamatopoulos, A. and Stora, T. and Tagliente, G. and Tain, J.L. and Tarifeño-Saldivia, A. and Tassan-Got, L. and Tsinganis, A. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Warren, S. and Weigand, Mario and Weiß, C. and Wolf, C. and Woods, P.J. and Wright, T. and Žugec, P.},
editor = {Formicola A. and Junker M. and Gialanella L. and Imbriani G.},
title = {7Be(n,p)7 Li Cross Section Measurement for the Cosmological Lithium Problem at the n_TOF Facility at CERN},
journal = {Springer Proceedings in Physics},
year = {2019},
volume = {219},
pages = {25 – 32},
note = {Cited by: 0; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071911574&doi=10.1007%2f978-3-030-13876-9_5&partnerID=40&md5=907a6cfabaa64688f2d0b9fb6b53362a},
doi = {10.1007/978-3-030-13876-9_5}
}
|
| Goldkuhle A, Fransen C, Blazhev A, Beckers M, Birkenbach B,
Braunroth T, Clément E, Dewald A, Dudouet J, Eberth J, Hess H,
Jacquot B, Jolie J, Kim Y-H, Lemasson A, Lenzi S, Li H, Litzinger J,
Michelagnoli C, Müller-Gatermann C, Nara Singh B, Pérez-Vidal R,
Ralet D, Reiter P, Vogt A, Warr N, Zell K, Ataç A, Barrientos D,
Barthe-Dejean C, Benzoni G, Boston A, Boston H, Bourgault P, Burrows
I, Cacitti J, Cederwall B, Ciemala M, Cullen D, De France G,
Domingo-Pardo C, Foucher J-L, Fremont G, Gadea A, Gangnant P,
González V, Goupil J, Henrich C, Houarner C, Jean M, Judson D,
Korichi A, Korten W, Labiche M, Lefevre A, Legeard L, Legruel F,
Leoni S, Ljungvall J, Maj A, Maugeais C, Ménager L, Ménard N,
Menegazzo R, Mengoni D, Million B, Munoz H, Napoli D, Navin A,
Nyberg J, Ozille M, Podolyak Z, Pullia A, Raine B, Recchia F, Ropert
J, Saillant F, Salsac M, Sanchis E, Schmitt C, Simpson J, Spitaels
C, Stezowski O, Theisen C, Toulemonde M, Tripon M, Valiente Dobón
J-J, Voltolini G and Zielińska M (2019), "Lifetime measurements in 52,54Ti to study shell evolution toward N = 32", Physical Review C. Vol. 100(5) |
| Abstract: Lifetimes of the excited states in the neutron-rich Ti52,54 nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance Doppler-shift method. The experiment was performed at the Grand Accélérateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the γ-ray detection, coupled to the large-acceptance variable mode spectrometer for an event-by-event particle identification. A comparison between the transition probabilities obtained from the measured lifetimes of the 21+ to 81+ yrast states in Ti52,54 and that from the shell-model calculations based on the well-established GXPF1A, GXPF1B, and KB3G fp shell interactions support the N=32 subshell closure. The B(E2) values for Ti52 determined in this work are in disagreement with the known data, but are consistent with the predictions of the shell-model calculations and reduce the previously observed pronounced staggering across the even-even titanium isotopes. © 2019 authors. Published by the American Physical Society. |
BibTeX:
@article{Goldkuhle2019,
author = {Goldkuhle, A. and Fransen, C. and Blazhev, A. and Beckers, M. and Birkenbach, B. and Braunroth, T. and Clément, E. and Dewald, A. and Dudouet, J. and Eberth, J. and Hess, H. and Jacquot, B. and Jolie, J. and Kim, Y.-H. and Lemasson, A. and Lenzi, S.M. and Li, H.J. and Litzinger, J. and Michelagnoli, C. and Müller-Gatermann, C. and Nara Singh, B.S. and Pérez-Vidal, R.M. and Ralet, D. and Reiter, P. and Vogt, A. and Warr, N. and Zell, K.O. and Ataç, A. and Barrientos, D. and Barthe-Dejean, C. and Benzoni, G. and Boston, A.J. and Boston, H.C. and Bourgault, P. and Burrows, I. and Cacitti, J. and Cederwall, B. and Ciemala, M. and Cullen, D.M. and De France, G. and Domingo-Pardo, C. and Foucher, J.-L. and Fremont, G. and Gadea, A. and Gangnant, P. and González, V. and Goupil, J. and Henrich, C. and Houarner, C. and Jean, M. and Judson, D.S. and Korichi, A. and Korten, W. and Labiche, M. and Lefevre, A. and Legeard, L. and Legruel, F. and Leoni, S. and Ljungvall, J. and Maj, A. and Maugeais, C. and Ménager, L. and Ménard, N. and Menegazzo, R. and Mengoni, D. and Million, B. and Munoz, H. and Napoli, D.R. and Navin, A. and Nyberg, J. and Ozille, M. and Podolyak, Zs. and Pullia, A. and Raine, B. and Recchia, F. and Ropert, J. and Saillant, F. and Salsac, M.D. and Sanchis, E. and Schmitt, C. and Simpson, J. and Spitaels, C. and Stezowski, O. and Theisen, Ch. and Toulemonde, M. and Tripon, M. and Valiente Dobón, J.-J. and Voltolini, G. and Zielińska, M.},
title = {Lifetime measurements in Ti 52,54 to study shell evolution toward N=32},
journal = {Physical Review C},
year = {2019},
volume = {100},
number = {5},
note = {Cited by: 12; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075800207&doi=10.1103%2fPhysRevC.100.054317&partnerID=40&md5=2a45f5f643dc8cf8b98b2fc4de75405f},
doi = {10.1103/PhysRevC.100.054317}
}
|
| Gregor E, Arsenyev N, Scheck M, Shneidman T, Thürauf M, Bernards
C, Blanc A, Chapman R, Drouet F, Dzhioev A, De France G, Jentschel
M, Jolie J, Keatings J, Kröll T, Köster U, Leguillon R, Mashtakov K,
Mutti P, O'Donnell D, Petrache C, Simpson G, Sinclair J, Smith J,
Soldner T, Spagnoletti P, Sushkov A, Urban W, Vancraeyenest A,
Vanhoy J, Werner V, Zell K and Zielińska M (2019), "Decay properties of the 31– level in 96Mo", Journal of Physics G: Nuclear and Particle Physics. Vol. 46(7) |
| Abstract: The first excited 31- level of 96Mo was investigated in a high-statistics experiment using the 95Mo(n, ) cold neutron capture reaction. The measurements used the high cold neutron flux from the research reactor at Institut Laue-Langevin and employed the highly-efficient EXILL array to detect -ray coincidences. The recorded statistics allow identification of decay branches with only a small relative intensity including the 31- 0+gs E3 decay. With the knowledge of the newly measured branching ratio and the known - + B(E3, 31 0gs) transition probability, the lifetime of the 31- level was determined and, subsequently, the B(E1) strength of the other decay branches of the 31- octupole phonon were calculated. The extracted electromagnetic decay strengths are compared to the systematics of the stable even even molybdenum isotopes and values calculated in a Skyrme-force based quasiparticle random phase approximation and in a cluster approach. Additionally, the 31- 2+iv decay branch to the low-lying 2+iv quadrupole isovector level was observed. © 2019 Institute of Physics Publishing. All rights reserved. |
BibTeX:
@article{Gregor2019,
author = {Gregor, E.T. and Arsenyev, N.N. and Scheck, M. and Shneidman, T.M. and Thürauf, M. and Bernards, C. and Blanc, A. and Chapman, R. and Drouet, F. and Dzhioev, A.A. and De France, G. and Jentschel, M. and Jolie, J. and Keatings, J.M. and Kröll, Th and Köster, U. and Leguillon, R. and Mashtakov, K.R. and Mutti, P. and O'Donnell, D. and Petrache, C.M. and Simpson, G.S. and Sinclair, J. and Smith, J.F. and Soldner, T. and Spagnoletti, P. and Sushkov, A.V. and Urban, W. and Vancraeyenest, A. and Vanhoy, J.R. and Werner, V. and Zell, K.O. and Zielińska, M.},
title = {Decay properties of the 31- level in 96Mo},
journal = {Journal of Physics G: Nuclear and Particle Physics},
year = {2019},
volume = {46},
number = {7},
note = {Cited by: 6; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070746573&doi=10.1088%2f1361-6471%2fab0b5e&partnerID=40&md5=ba9e718db8be722c750d3f1b7b08b914},
doi = {10.1088/1361-6471/ab0b5e}
}
|
| Kaya L, Vogt A, Reiter P, Müller-Gatermann C, Gargano A, Coraggio
L, Itaco N, Blazhev A, Arnswald K, Bazzacco D, Birkenbach B, Bracco
A, Bruyneel B, Corradi L, Crespi F, De Angelis G, Droste M, Eberth
J, Farnea E, Fioretto E, Fransen C, Gadea A, Giaz A, Görgen A,
Gottardo A, Hadyńska-Klȩk K, Hess H, Hetzenegger R, Hirsch R, John
P, Jolie J, Jungclaus A, Korten W, Leoni S, Lewandowski L, Lunardi
S, Menegazzo R, Mengoni D, Michelagnoli C, Mijatović T, Montagnoli
G, Montanari D, Napoli D, Podolyák Z, Pollarolo G, Recchia F, Rosiak
D, Saed-Samii N, Şahin E, Siciliano M, Scarlassara F, Seidlitz M,
Söderström P-A, Stefanini A, Stezowski O, Szilner S, Szpak B, Ur C,
Valiente-Dobón J, Weinert M, Wolf K and Zell K (2019), "Identification of high-spin proton configurations in 136Ba and 137Ba", Physical Review C. Vol. 99(1) |
| Abstract: The high-spin structures of Ba136 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Ba136 is populated in a Xe136+U238 MNT reaction employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and in two Be9+Te130 fusion-evaporation reactions using the High-efficiency Observatory for γ-Ray Unique Spectroscopy (HORUS) at the FN tandem accelerator of the University of Cologne, Germany. Furthermore, both isotopes are populated in an elusive reaction channel in the B11+Te130 fusion-evaporation reaction utilizing the HORUS γ-ray array. The level scheme above the Jπ=10+ isomer in Ba136 is revised and extended up to an excitation energy of approximately 5.5 MeV. From the results of angular-correlation measurements, the Ex=3707- and Ex=4920-keV states are identified as the bandheads of positive- and negative-parity cascades. While the high-spin regimes of both Te132 and Xe134 are characterized by high-energy 12+→10+ transitions, the Ba136E2 ground-state band is interrupted by negative-parity states only a few hundred keV above the Jπ=10+ isomer. Furthermore, spins are established for several hitherto unassigned high-spin states in Ba137. The new results close a gap along the high-spin structure of N<82 Ba isotopes. Experimental results are compared to large-scale shell-model calculations employing the GCN50:82, Realistic SM, PQM130, and SN100PN interactions. The calculations suggest that the bandheads of the positive-parity bands in both isotopes are predominantly of proton character. © 2019 American Physical Society. |
BibTeX:
@article{Kaya2019,
author = {Kaya, L. and Vogt, A. and Reiter, P. and Müller-Gatermann, C. and Gargano, A. and Coraggio, L. and Itaco, N. and Blazhev, A. and Arnswald, K. and Bazzacco, D. and Birkenbach, B. and Bracco, A. and Bruyneel, B. and Corradi, L. and Crespi, F.C.L. and De Angelis, G. and Droste, M. and Eberth, J. and Farnea, E. and Fioretto, E. and Fransen, C. and Gadea, A. and Giaz, A. and Görgen, A. and Gottardo, A. and Hadyńska-Klȩk, K. and Hess, H. and Hetzenegger, R. and Hirsch, R. and John, P.R. and Jolie, J. and Jungclaus, A. and Korten, W. and Leoni, S. and Lewandowski, L. and Lunardi, S. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Montagnoli, G. and Montanari, D. and Napoli, D. and Podolyák, Zs. and Pollarolo, G. and Recchia, F. and Rosiak, D. and Saed-Samii, N. and Şahin, E. and Siciliano, M. and Scarlassara, F. and Seidlitz, M. and Söderström, P.-A. and Stefanini, A.M. and Stezowski, O. and Szilner, S. and Szpak, B. and Ur, C. and Valiente-Dobón, J.J. and Weinert, M. and Wolf, K. and Zell, K.O.},
title = {Identification of high-spin proton configurations in Ba 136 and Ba 137},
journal = {Physical Review C},
year = {2019},
volume = {99},
number = {1},
note = {Cited by: 5; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059852355&doi=10.1103%2fPhysRevC.99.014301&partnerID=40&md5=1fb3bb665bb78663ef53bc33fb6d15ca},
doi = {10.1103/PhysRevC.99.014301}
}
|
| Kaya L, Vogt A, Reiter P, Siciliano M, Shimizu N, Utsuno Y, Wang
H-K, Gargano A, Coraggio L, Itaco N, Arnswald K, Bazzacco D,
Birkenbach B, Blazhev A, Bracco A, Bruyneel B, Corradi L, Crespi F,
De Angelis G, Droste M, Eberth J, Esmaylzadeh A, Farnea E, Fioretto
E, Fransen C, Gadea A, Giaz A, Görgen A, Gottardo A, Hadyńska-Klȩk
K, Hess H, Hirsch R, John P, Jolie J, Jungclaus A, Karayonchev V,
Kornwebel L, Korten W, Leoni S, Lewandowski L, Lunardi S, Menegazzo
R, Mengoni D, Michelagnoli C, Mijatović T, Montagnoli G, Montanari
D, Müller-Gatermann C, Napoli D, Podolyák Z, Pollarolo G, Recchia F,
Régis J-M, Saed-Samii N, Şahin E, Scarlassara F, Schomacker K,
Seidlitz M, Siebeck B, Söderström P-A, Stefanini A, Stezowski O,
Szilner S, Szpak B, Teruya E, Ur C, Valiente-Dobón J, Wolf K, Yanase
K, Yoshinaga N and Zell K (2019), "Isomer spectroscopy in 133Ba and high-spin structure of 134Ba ", Physical Review C. Vol. 100(2) |
| Abstract: The transitional nuclei Ba134 and Ba133 are investigated after multinucleon transfer employing the high-resolution Advanced GAmma Tracking Array coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and after fusion-evaporation reaction at the FN tandem accelerator of the University of Cologne, Germany. The Jπ=19/2+ state at 1942 keV in Ba133 is identified as an isomer with a half-life of 66.6(20)ns corresponding to a B(E1) value of 7.7(4)×10-6e2fm2 for the Jπ=19/2+ to Jπ=19/2- transition. The level scheme of Ba134 above the Jπ=10+ isomer is extended to approximately 6 MeV. A pronounced backbending is observed at ω=0.38 MeV along the positive-parity yrast band. The results are compared to the high-spin systematics of the Z=56 isotopes. Large-scale shell-model calculations employing the GCN50:82, SN100PN, SNV, PQM130, Realistic SM, and EPQQM interactions reproduce the experimental findings and elucidate the structure of the high-spin states. The shell-model calculations employing the GCN50:82 and PQM130 interactions reproduce alignment properties and provide detailed insight into the microscopic origin of this phenomenon in transitional Ba134. © 2019 American Physical Society. |
BibTeX:
@article{Kaya2019,
author = {Kaya, L. and Vogt, A. and Reiter, P. and Siciliano, M. and Shimizu, N. and Utsuno, Y. and Wang, H.-K. and Gargano, A. and Coraggio, L. and Itaco, N. and Arnswald, K. and Bazzacco, D. and Birkenbach, B. and Blazhev, A. and Bracco, A. and Bruyneel, B. and Corradi, L. and Crespi, F.C.L. and De Angelis, G. and Droste, M. and Eberth, J. and Esmaylzadeh, A. and Farnea, E. and Fioretto, E. and Fransen, C. and Gadea, A. and Giaz, A. and Görgen, A. and Gottardo, A. and Hadyńska-Klȩk, K. and Hess, H. and Hirsch, R. and John, P.R. and Jolie, J. and Jungclaus, A. and Karayonchev, V. and Kornwebel, L. and Korten, W. and Leoni, S. and Lewandowski, L. and Lunardi, S. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Montagnoli, G. and Montanari, D. and Müller-Gatermann, C. and Napoli, D. and Podolyák, Zs. and Pollarolo, G. and Recchia, F. and Régis, J.-M. and Saed-Samii, N. and Şahin, E. and Scarlassara, F. and Schomacker, K. and Seidlitz, M. and Siebeck, B. and Söderström, P.-A. and Stefanini, A.M. and Stezowski, O. and Szilner, S. and Szpak, B. and Teruya, E. and Ur, C. and Valiente-Dobón, J.J. and Wolf, K. and Yanase, K. and Yoshinaga, N. and Zell, K.O.},
title = {Isomer spectroscopy in Ba 133 and high-spin structure of Ba 134},
journal = {Physical Review C},
year = {2019},
volume = {100},
number = {2},
note = {Cited by: 12; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070933153&doi=10.1103%2fPhysRevC.100.024323&partnerID=40&md5=38d2806f74b57c0fe7d130596ddf01c0},
doi = {10.1103/PhysRevC.100.024323}
}
|
| Keeley N and Mackintosh RS (2019), "Pickup coupling contribution to the optical model potential for 30.3 MeV protons and neutrons on 40Ca", Phys. Rev. C., mar, 2019. Vol. 99(3), pp. 034614. |
| Abstract: We study the dynamic polarization potentials (DPPs) for 30.3 MeV protons and neutrons scattering from Ca40 that are generated by the coupling to deuteron channels. In this way we resolve unexpected differences from the general properties of such DPPs found in similar cases for lighter targets. It turns out that the contribution of particular states to the real part can change considerably with Q value, coming close to changing sign. One consequence is the surprising result presented in Mackintosh and Keeley [Phys. Rev. C 97, 069901(E) (2018)2469-998510.1103/PhysRevC.97.069901], which is investigated here. The Q-value dependence of the DPPs also contributes to a substantial difference between the optical model potential for protons and neutrons, there being substantially different Q values for Ca40(n,d) and Ca40(p,d) pickup reactions. The DPP calculations also enable a study of the dynamical nonlocality (distinct from exchange nonlocality) arising from pickup coupling. The characteristic properties of the DPPs for both protons and neutrons arising from nucleon pickup are also presented for incident nucleons at 25, 35, 40, and 45 MeV. All these properties vary with energy in a consistent way, including a change in the rms radius of the real potential, which, together with the general undularity of the DPP, shows that the pickup contributions cannot be represented by renormalizing a folding model potential. |
BibTeX:
@article{Keeley2019,
author = {Keeley, N. and Mackintosh, R. S.},
title = {Pickup coupling contribution to the optical model potential for 30.3 MeV protons and neutrons on Ca 40},
journal = {Phys. Rev. C},
year = {2019},
volume = {99},
number = {3},
pages = {034614},
url = {https://link.aps.org/doi/10.1103/PhysRevC.99.034614},
doi = {10.1103/PhysRevC.99.034614}
}
|
| Olaizola B, Fraile L, Mach H, Nowacki F, Poves A, Aprahamian A,
Briz J, Cal-González J, Ghiţa D, Köster U, Kurcewicz W, Lesher S,
Pauwels D, Picado E, Radulov D, Simpson G and Udías J (2019), "Properties of low-lying states in 65Co from lifetime measurements", Physical Review C. Vol. 99(2) |
| Abstract: The low-energy structure of Co65 was studied by means of γ-and fast-timing spectroscopy at the ISOLDE/CERN facility. The known level scheme of Co65 populated following the β-decay of Fe65 was expanded. The experimental results were compared with large-scale shell-model calculations. The measured long lifetime of the (1/21-) level confirms its nature as a highly collective state with proton excitations across the Z=28 gap and neutrons across the N=40 subshell. © 2019 American Physical Society. |
BibTeX:
@article{Olaizola2019,
author = {Olaizola, B. and Fraile, L.M. and Mach, H. and Nowacki, F. and Poves, A. and Aprahamian, A. and Briz, J.A. and Cal-González, J. and Ghiţa, D. and Köster, U. and Kurcewicz, W. and Lesher, S.R. and Pauwels, D. and Picado, E. and Radulov, D. and Simpson, G.S. and Udías, J.M.},
title = {Properties of low-lying states in Co 65 from lifetime measurements},
journal = {Physical Review C},
year = {2019},
volume = {99},
number = {2},
note = {Cited by: 1; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062461263&doi=10.1103%2fPhysRevC.99.024321&partnerID=40&md5=4022973472d78f3ea7257985a40ca1ef},
doi = {10.1103/PhysRevC.99.024321}
}
|
| Petrache C, Régis J-M, Andreoiu C, Spieker M, Michelagnoli C, Garrett P, Astier A, Dupont E, Garcia F, Guo S, Häfner G, Jolie J, Kandzia F, Karayonchev V, Kim Y-H, Knafla L, Köster U, Lv B, Marginean N, Mihai C, Mutti P, Ortner K, Porzio C, Prill S, Saed-Samii N, Urban W, Vanhoy J, Whitmore K, Wisniewski J and Yates S (2019), "Collectivity of the 2p-2h proton intruder band of 116Sn ", Physical Review C. Vol. 99(2) |
| Abstract: The half-life of the 42+ state of the 2p-2h proton intruder band of Sn116 has been measured with the fast-timing technique. The lifetime of T1/2=29(10) ps leads to a transition probability BE2;42+→22+=40(13) Weisskopf units, which is in very good agreement with the large BE2;22+→03+ value measured previously and provides strong support for the 03+ state as the bandhead of the intruder configuration and for the shape coexistence in the semimagic Sn116 nucleus. IBM-2 calculations with mixing reproduce the experimental data very well, giving insight into the degree of mixing between the different states. © 2019 American Physical Society. |
BibTeX:
@article{Petrache2019,
author = {Petrache, C.M. and Régis, J.-M. and Andreoiu, C. and Spieker, M. and Michelagnoli, C. and Garrett, P.E. and Astier, A. and Dupont, E. and Garcia, F. and Guo, S. and Häfner, G. and Jolie, J. and Kandzia, F. and Karayonchev, V. and Kim, Y.-H. and Knafla, L. and Köster, U. and Lv, B.F. and Marginean, N. and Mihai, C. and Mutti, P. and Ortner, K. and Porzio, C. and Prill, S. and Saed-Samii, N. and Urban, W. and Vanhoy, J.R. and Whitmore, K. and Wisniewski, J. and Yates, S.W.},
title = {Collectivity of the 2p-2h proton intruder band of Sn 116},
journal = {Physical Review C},
year = {2019},
volume = {99},
number = {2},
note = {Cited by: 12; All Open Access, Bronze Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061231334&doi=10.1103%2fPhysRevC.99.024303&partnerID=40&md5=b20c8abefdb1b5775c1a89b0c4cd3c8a},
doi = {10.1103/PhysRevC.99.024303}
}
|
| Spagnoletti P, Simpson G, Kisyov S, Bucurescu D, Régis J-M,
Saed-Samii N, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, De
France G, Ur C, Urban W, Bruce A, Bernards C, Drouet F, Fraile L,
Gaffney L, Ghitǎ D, Ilieva S, Jolie J, Korten W, Kröll T, Lalkovski
S, Larijarni C, Licǎ R, Mach H, Mǎrginean N, Paziy V, Podolyák Z,
Regan P, Scheck M, Smith J, Thiamova G, Townsley C, Vancraeyenest A,
Vedia V, Warr N, Werner V and Zielińska M (2019), "Lifetimes and shape-coexisting states of 99Zr", Physical Review C. Vol. 100(1) |
| Abstract: Lifetimes of intermediate-spin states in two rotational bands of Zr99 have been measured. These states were populated following the neutron-induced fission of U235 at the PF1B beamline of the Institut Laue-Langevin, Grenoble, during the EXILL-FATIMA campaign. The nucleus Zr9959 exhibits shape coexistence and lies precisely on the border of an abrupt change in ground-state deformation when going from N=58 to N=60, making its study interesting for understanding the mechanisms involved in the rapid onset of deformation here. The B(E2) values extracted for decays in the ν3/2[541] band allow quadrupole deformations of β2=0.34(1) and 0.26(3) to be determined for the 821.6- and 1236.6-keV members, whereas β2=0.32(3) was found for the 850.5-keV member of the ν3/2[411] band. Some of the excited states known in Zr99 have been reasonably described with interacting boson-fermion model (IBFM) calculations. Type-II shell evolution is proposed to play a major role in modifying single-particle energies in Zr99. © 2019 authors. Published by the American Physical Society. |
BibTeX:
@article{Spagnoletti2019,
author = {Spagnoletti, P. and Simpson, G. and Kisyov, S. and Bucurescu, D. and Régis, J.-M. and Saed-Samii, N. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Ur, C.A. and Urban, W. and Bruce, A.M. and Bernards, C. and Drouet, F. and Fraile, L.M. and Gaffney, L.P. and Ghitǎ, D.G. and Ilieva, S. and Jolie, J. and Korten, W. and Kröll, T. and Lalkovski, S. and Larijarni, C. and Licǎ, R. and Mach, H. and Mǎrginean, N. and Paziy, V. and Podolyák, Zs. and Regan, P.H. and Scheck, M. and Smith, J.F. and Thiamova, G. and Townsley, C. and Vancraeyenest, A. and Vedia, V. and Warr, N. and Werner, V. and Zielińska, M.},
title = {Lifetimes and shape-coexisting states of Zr 99},
journal = {Physical Review C},
year = {2019},
volume = {100},
number = {1},
note = {Cited by: 10; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069918969&doi=10.1103%2fPhysRevC.100.014311&partnerID=40&md5=45c5dd52f01c3bc60e9c082c972cdb78},
doi = {10.1103/PhysRevC.100.014311}
}
|
| Thürauf M, Stoyanov C, Scheck M, Jentschel M, Bernards C, Blanc A,
Cooper N, De France G, Gregor E, Henrich C, Hicks S, Jolie J, Kaleja
O, Köster U, Kröll T, Leguillon R, Mutti P, O'Donnell D, Petrache C,
Simpson G, Smith J, Soldner T, Tezgel M, Urban W, Vanhoy J, Werner
M, Werner V, Zell K and Zerrouki T (2019), "Low-lying octupole isovector excitation in 144Nd", Physical Review C. Vol. 99(1) |
| Abstract: The nature of low-lying 3- levels in Nd144 was investigated in the Nd143(n,γγ) cold neutron-capture reaction. The combination of the high neutron flux from the research reactor at the Institut Laue-Langevin and the high γ-ray detection efficiency of the EXILL setup allowed the recording of γγ coincidences. From the coincidence data precise branching ratios were extracted. Furthermore, the octagonal symmetry of the setup allowed angular-distribution measurements to determine multipole-mixing ratios. Additionally, in a second measurement the ultra-high resolution spectrometer GAMS6 was employed to conduct lifetime measurements using the gamma-ray induced Doppler-shift technique (GRID). The confirmed strong M1 component in the 33-→31- decay strongly supports the assignment of the 33- level at 2779keV as low-lying isovector octupole excitation. Microscopic calculations within the quasiparticle phonon model confirm an isovector component in the wave function of the 33- level, firmly establishing this fundamental mode of nuclear excitation in near-spherical nuclei. © 2019 American Physical Society. |
BibTeX:
@article{Thürauf2019,
author = {Thürauf, M. and Stoyanov, Ch. and Scheck, M. and Jentschel, M. and Bernards, C. and Blanc, A. and Cooper, N. and De France, G. and Gregor, E.T. and Henrich, C. and Hicks, S.F. and Jolie, J. and Kaleja, O. and Köster, U. and Kröll, T. and Leguillon, R. and Mutti, P. and O'Donnell, D. and Petrache, C.M. and Simpson, G.S. and Smith, J.F. and Soldner, T. and Tezgel, M. and Urban, W. and Vanhoy, J. and Werner, M. and Werner, V. and Zell, K.O. and Zerrouki, T.},
title = {Low-lying octupole isovector excitation in Nd 144},
journal = {Physical Review C},
year = {2019},
volume = {99},
number = {1},
note = {Cited by: 1; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060983568&doi=10.1103%2fPhysRevC.99.011304&partnerID=40&md5=375cedede6f8b2f1aa21481ffa15cb8c},
doi = {10.1103/PhysRevC.99.011304}
}
|
| Ziliani S, Ciemała M, Crespi F, Leoni S, Fornal B, Maj A,
Bednarczyk P, Benzoni G, Bracco A, Boiano C, Bottoni S, Brambilla S,
Bast M, Beckers M, Braunroth T, Camera F, Cieplicka-Oryńczak N,
Clément E, Dorvaux O, Erturk S, De France G, Goldkuhle A, Grębosz J,
Harakeh M, Iskra Ł, Jacquot B, Kicińska-Habior M, Kim Y, Kmiecik M,
Lemasson A, Li H, Matea I, Mazurek K, Michelagnoli C, Million B,
Müller-Gatermann C, Napiorkowski P, Nanal V, Matejska-Minda M,
Rejmund M, Schmitt C, Stanoiu M, Stefan I, Wasilewska B and
Ziębliński M (2019), "Spectroscopy of neutron-rich C, O, N and F isotopes with the Agata+Paris+Vamos setup at Ganil", Acta Physica Polonica B. Vol. 50(3), pp. 625 – 631. |
| Abstract: Recent ab initio calculations pointed out the importance of the three-body terms of the nuclear interaction, in the description of the structure of n-rich systems. The state lifetimes in light n-rich carbon and oxygen nuclei have been predicted to be sensitive to the three-body terms and, in this context, an experiment, aiming at the measurement of these lifetimes, was performed in GANIL in July 2017 with the AGATA and PARIS arrays coupled to the VAMOS++ magnetic spectrometer. Details on the AGATA preliminary data analysis are presented. © 2019 Jagellonian University. All Rights Reserved. |
BibTeX:
@article{Ziliani2019625,
author = {Ziliani, S. and Ciemała, M. and Crespi, F. and Leoni, S. and Fornal, B. and Maj, A. and Bednarczyk, P. and Benzoni, G. and Bracco, A. and Boiano, C. and Bottoni, S. and Brambilla, S. and Bast, M. and Beckers, M. and Braunroth, T. and Camera, F. and Cieplicka-Oryńczak, N. and Clément, E. and Dorvaux, O. and Erturk, S. and De France, G. and Goldkuhle, A. and Grębosz, J. and Harakeh, M.N. and Iskra, Ł.W. and Jacquot, B. and Kicińska-Habior, M. and Kim, Y. and Kmiecik, M. and Lemasson, A. and Li, H. and Matea, I. and Mazurek, K. and Michelagnoli, C. and Million, B. and Müller-Gatermann, C. and Napiorkowski, P. and Nanal, V. and Matejska-Minda, M. and Rejmund, M. and Schmitt, Ch. and Stanoiu, M. and Stefan, I. and Wasilewska, B. and Ziębliński, M.},
title = {Spectroscopy of neutron-rich C, O, N and F isotopes with the Agata+Paris+Vamos setup at Ganil ∗},
journal = {Acta Physica Polonica B},
year = {2019},
volume = {50},
number = {3},
pages = {625 – 631},
note = {Cited by: 3; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063684690&doi=10.5506%2fAPhysPolB.50.625&partnerID=40&md5=7cb3e3660278fb5415e9af0b679cf309},
doi = {10.5506/APhysPolB.50.625}
}
|
| Ansari S, Régis J-M, Jolie J, Saed-Samii N, Warr N, Korten W,
Zielińska M, Salsac M-D, Blanc A, Jentschel M, Köster U, Mutti P,
Soldner T, Simpson G, Drouet F, Vancraeyenest A, De France G,
Clément E, Stezowski O, Ur C, Urban W, Regan P, Podolyák Z, Larijani
C, Townsley C, Carroll R, Wilson E, MacH H, Fraile L, Paziy V,
Olaizola B, Vedia V, Bruce A, Roberts O, Smith J, Scheck M, Kröll T,
Hartig A-L, Ignatov A, Ilieva S, Lalkovski S, Mǎrginean N, Otsuka T,
Shimizu N, Togashi T and Tsunoda Y (2018), "Lifetime measurement in neutron-rich A∼100 nuclei", EPJ Web of Conferences. Vol. 193 |
| Abstract: Lifetimes of excited states of the 98;100;102Zr nuclei were measured by using the Generalized Centroid Difference Method. The nuclei of interest were populated via neutron-induced fission of 241Pu and 235U during the EXILL-FATIMA campaign. The obtained lifetimes were used to calculate the B(E2) transition strengths and β deformation parameters which were then compared with the recent theoretical predictions obtained with Monte Carlo Shell Model. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{Ansari2018,
author = {Ansari, S. and Régis, J.-M. and Jolie, J. and Saed-Samii, N. and Warr, N. and Korten, W. and Zielińska, M. and Salsac, M.-D. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G.S. and Drouet, F. and Vancraeyenest, A. and De France, G. and Clément, E. and Stezowski, O. and Ur, C.A. and Urban, W. and Regan, P.H. and Podolyák, Zs. and Larijani, C. and Townsley, C. and Carroll, R. and Wilson, E. and MacH, H. and Fraile, L.M. and Paziy, V. and Olaizola, B. and Vedia, V. and Bruce, A.M. and Roberts, O.J. and Smith, J.F. and Scheck, M. and Kröll, T. and Hartig, A.-L. and Ignatov, A. and Ilieva, S. and Lalkovski, S. and Mǎrginean, N. and Otsuka, T. and Shimizu, N. and Togashi, T. and Tsunoda, Y.},
editor = {Koster U.},
title = {Lifetime measurement in neutron-rich A∼100 nuclei},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {193},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057887785&doi=10.1051%2fepjconf%2f201819305003&partnerID=40&md5=64ec3e7ff0d95bba5bfe948fddae5ba5},
doi = {10.1051/epjconf/201819305003}
}
|
| Ban G, Bison G, Bodek K, Daum M, Fertl M, Franke B, Grujić Z, Heil
W, Horras M, Kasprzak M, Kermaidic Y, Kirch K, Koch H-C, Komposch S,
Kozela A, Krempel J, Lauss B, Lefort T, Mtchedlishvili A, Pignol G,
Piegsa F, Prashanth P, Quéméner G, Rawlik M, Rebreyend D, Ries D,
Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Severijns N, Weis A,
Wyszynski G, Zejma J and Zsigmond G (2018), "Demonstration of sensitivity increase in mercury free-spin-precession magnetometers due to laser-based readout for neutron electric dipole moment searches", Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 896, pp. 129 – 138. |
| Abstract: We report on a laser based 199Hg co-magnetometer deployed in an experiment searching for a permanent electric dipole moment of the neutron. We demonstrate a more than five times increased signal to-noise-ratio in a direct comparison measurement with its 204Hg discharge bulb-based predecessor. An improved data model for the extraction of important system parameters such as the degrees of absorption and polarization is derived. Laser- and lamp-based data-sets can be consistently described by the improved model which permits to compare measurements using the two different light sources and to explain the increase in magnetometer performance. The laser-based magnetometer satisfies the magnetic field sensitivity requirements for the next generation nEDM experiments. © 2018 Elsevier B.V. |
BibTeX:
@article{Ban2018,
author = {Ban, G. and Bison, G. and Bodek, K. and Daum, M. and Fertl, M. and Franke, B. and Grujić, Z.D. and Heil, W. and Horras, M. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Mtchedlishvili, A. and Pignol, G. and Piegsa, F.M. and Prashanth, P. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Weis, A. and Wyszynski, G. and Zejma, J. and Zsigmond, G.},
title = {Demonstration of sensitivity increase in mercury free-spin-precession magnetometers due to laser-based readout for neutron electric dipole moment searches},
journal = {Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
year = {2018},
volume = {896},
pages = {129 – 138},
note = {Cited by: 7; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046353801&doi=10.1016%2fj.nima.2018.04.025&partnerID=40&md5=fefefd6ff984c86df485c36b6f7f953b},
doi = {10.1016/j.nima.2018.04.025}
}
|
| Bender P, Wetterskog E, Honecker D, Fock J, Frandsen C, Moerland
C, Bogart L, Posth O, Szczerba W, Gavilán H, Costo R, Fernández-Díaz
M, González-Alonso D, Fernández Barquín L and Johansson C (2018), "Dipolar-coupled moment correlations in clusters of magnetic nanoparticles", Physical Review B. Vol. 98(22) |
| Abstract: Here, we resolve the nature of the moment coupling between 10-nm dimercaptosuccinic acid-coated magnetic nanoparticles. The individual iron oxide cores were composed of >95% maghemite and agglomerated to clusters. At room temperature the ensemble behaved as a superparamagnet according to Mössbauer and magnetization measurements, however, with clear signs of dipolar interactions. Analysis of temperature-dependent ac susceptibility data in the superparamagnetic regime indicates a tendency for dipolar-coupled anticorrelations of the core moments within the clusters. To resolve the directional correlations between the particle moments we performed polarized small-angle neutron scattering and determined the magnetic spin-flip cross section of the powder in low magnetic field at 300 K. We extract the underlying magnetic correlation function of the magnetization vector field by an indirect Fourier transform of the cross section. The correlation function suggests nonstochastic preferential alignment between neighboring moments despite thermal fluctuations, with anticorrelations clearly dominating for next-nearest moments. These tendencies are confirmed by Monte Carlo simulations of such core clusters. © 2018 American Physical Society. |
BibTeX:
@article{Bender2018,
author = {Bender, P. and Wetterskog, E. and Honecker, D. and Fock, J. and Frandsen, C. and Moerland, C. and Bogart, L.K. and Posth, O. and Szczerba, W. and Gavilán, H. and Costo, R. and Fernández-Díaz, M.T. and González-Alonso, D. and Fernández Barquín, L. and Johansson, C.},
title = {Dipolar-coupled moment correlations in clusters of magnetic nanoparticles},
journal = {Physical Review B},
year = {2018},
volume = {98},
number = {22},
note = {Cited by: 36; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058959420&doi=10.1103%2fPhysRevB.98.224420&partnerID=40&md5=e250b7433a1c016cea4d29d43ce547fb},
doi = {10.1103/PhysRevB.98.224420}
}
|
| Bottoni S, Cieplicka-Oryńczak N, Bocchi G, Leoni S, Fornal B, Colò
G, Bortignon P, Benzoni G, Blanc A, Bracco A, Crespi F, Jentschel M,
Köster U, Michelagnoli C, Million B, Mutti P, Soldner T, Türler A,
Ur C and Urban W (2018), "(n,γ) reactions on rare Ca isotopes: Valence-hole – Coreexcitation couplings in 47Ca", EPJ Web of Conferences. Vol. 193 |
| Abstract: Recent results on the structure of 47Ca will be presented. The nucleus of interest was populated via the cold-neutron capture 46Ca(n,γ) reaction, on a rare 46Ca target, during the EXILL experimental campaign at the nuclear reactor of Institut Laue- Langevin in Grenoble. High-resolution γ-ray spectroscopy, performed with a composite array of HPGe detectors, enabled the identification of new transitions deexciting states between the neutron-capture level and the ground state. Experimental data will be compared with a novel microscopic theoretical model, currently under development, specifically designed to describe the low-lying structure of odd-mass nuclei with one valence particle/hole outside a spherical doubly-magic core, using the Skyrme effective interaction self-consistently. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{Bottoni2018,
author = {Bottoni, S. and Cieplicka-Oryńczak, N. and Bocchi, G. and Leoni, S. and Fornal, B. and Colò, G. and Bortignon, P.F. and Benzoni, G. and Blanc, A. and Bracco, A. and Crespi, F.C.L. and Jentschel, M. and Köster, U. and Michelagnoli, C. and Million, B. and Mutti, P. and Soldner, T. and Türler, A. and Ur, C.A. and Urban, W.},
editor = {Koster U.},
title = {(n,γ) reactions on rare Ca isotopes: Valence-hole - Coreexcitation couplings in 47Ca},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {193},
note = {Cited by: 3; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057881471&doi=10.1051%2fepjconf%2f201819305001&partnerID=40&md5=a9e48d8d16c1d15318b1a6b32b83f3ed},
doi = {10.1051/epjconf/201819305001}
}
|
| Casanovas A, Domingo-Pardo C, Guerrero C, Lerendegui-Marco J,
Calviño F, Tarifeño-Saldivia A, Dressler R, Heinitz S, Kivel N,
Quesada J, Schumann D, Aberle O, Alcayne V, Andrzejewski J, Audouin
L, Bécares V, Bacak M, Barbagallo M, Bečvář F, Bellia G,
Berthoumieux E, Billowes J, Bosnar D, Brown A, Busso M, Caamaño M,
Caballero-Ontanaya L, Calviani M, Cano-Ott D, Cerutti F, Chen Y,
Chiaveri E, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L,
Cristallo S, Damone L, Diakaki M, Dietz M, Dupont E, Durán I, Eleme
Z, Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P,
Furman V, Göbel K, Gawlik A, Gilardoni S, Glodariu T, Gonçalves I,
González-Romero E, Gunsing F, Heyse J, Jenkins D, Käppeler F, Kadi
Y, Katabuchi T, Kimura A, Kokkoris M, Kopatch Y, Krtička M,
Kurtulgil D, Ladarescu I, Lederer-Woods C, Meo SL, Lonsdale S,
Macina D, Martínez T, Masi A, Massimi C, Mastinu P, Mastromarco M,
Matteucci F, Maugeri E, Mazzone A, Mendoza E, Mengoni A,
Michalopoulou V, Milazzo P, Mingrone F, Musumarra A, Negret A, Nolte
R, Ogállar F, Oprea A, Patronis N, Pavlik A, Perkowski J, Persanti
L, Porras I, Praena J, Radeck D, Ramos D, Rauscher T, Reifarth R,
Rochman D, Sabaté-Gilarte M, Saxena A, Schillebeeckx P, Simone S,
Smith A, Sosnin N, Stamatopoulos A, Tagliente G, Tain J, Talip T,
Tassan-Got L, Tsinganis A, Ulrich J, Valenta S, Vannini G, Variale
V, Vaz P, Ventura A, Vlachoudis V, Vlastou R, Wallner A, Woods P,
Wright T, Zugec P and Köster U (2018), "Measurement of the radiative capture cross section of the s-process branching points 204Tl and 171Tm at the n-TOF facility (CERN)", EPJ Web of Conferences. Vol. 178 |
| Abstract: The neutron capture cross section of some unstable nuclei is especially relevant for s-process nucleosynthesis studies. This magnitude is crucial to determine the local abundance pattern, which can yield valuable information of the s-process stellar environment. In this work we describe the neutron capture (n,γ) measurement on two of these nuclei of interest, 204Tl and 171Tm, from target production to the final measurement, performed successfully at the n-TOF facility at CERN in 2014 and 2015. Preliminary results on the ongoing experimental data analysis will also be shown. These results include the first ever experimental observation of capture resonances for these two nuclei. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{Casanovas2018,
author = {Casanovas, A. and Domingo-Pardo, C. and Guerrero, C. and Lerendegui-Marco, J. and Calviño, F. and Tarifeño-Saldivia, A. and Dressler, R. and Heinitz, S. and Kivel, N. and Quesada, J.M. and Schumann, D. and Aberle, O. and Alcayne, V. and Andrzejewski, J. and Audouin, L. and Bécares, V. and Bacak, M. and Barbagallo, M. and Bečvář, F. and Bellia, G. and Berthoumieux, E. and Billowes, J. and Bosnar, D. and Brown, A. and Busso, M. and Caamaño, M. and Caballero-Ontanaya, L. and Calviani, M. and Cano-Ott, D. and Cerutti, F. and Chen, Y.H. and Chiaveri, E. and Colonna, N. and Cortés, G. and Cortés-Giraldo, M.A. and Cosentino, L. and Cristallo, S. and Damone, L.A. and Diakaki, M. and Dietz, M. and Dupont, E. and Durán, I. and Eleme, Z. and Fernández-Domínguez, B. and Ferrari, A. and Ferreira, P. and Finocchiaro, P. and Furman, V. and Göbel, K. and Gawlik, A. and Gilardoni, S. and Glodariu, T. and Gonçalves, I.F. and González-Romero, E. and Gunsing, F. and Heyse, J. and Jenkins, D.G. and Käppeler, F. and Kadi, Y. and Katabuchi, T. and Kimura, A. and Kokkoris, M. and Kopatch, Y. and Krtička, M. and Kurtulgil, D. and Ladarescu, I. and Lederer-Woods, C. and Meo, S. Lo and Lonsdale, S.J. and Macina, D. and Martínez, T. and Masi, A. and Massimi, C. and Mastinu, P. and Mastromarco, M. and Matteucci, F. and Maugeri, E.A. and Mazzone, A. and Mendoza, E. and Mengoni, A. and Michalopoulou, V. and Milazzo, P.M. and Mingrone, F. and Musumarra, A. and Negret, A. and Nolte, R. and Ogállar, F. and Oprea, A. and Patronis, N. and Pavlik, A. and Perkowski, J. and Persanti, L. and Porras, I. and Praena, J. and Radeck, D. and Ramos, D. and Rauscher, T. and Reifarth, R. and Rochman, D. and Sabaté-Gilarte, M. and Saxena, A. and Schillebeeckx, P. and Simone, S. and Smith, A.G. and Sosnin, N.V. and Stamatopoulos, A. and Tagliente, G. and Tain, J.L. and Talip, T. and Tassan-Got, L. and Tsinganis, A. and Ulrich, J. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Woods, P.J. and Wright, T. and Zugec, P. and Köster, U.},
editor = {Sun Y.},
title = {Measurement of the radiative capture cross section of the s-process branching points 204Tl and 171Tm at the n-TOF facility (CERN)},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {178},
note = {Cited by: 1; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048009308&doi=10.1051%2fepjconf%2f201817803004&partnerID=40&md5=ba7707dff0bf3f0473706a8a60f0e514},
doi = {10.1051/epjconf/201817803004}
}
|
| Cieplicka-Oryńczak N, Leoni S, Fornal B, Bazzacco D, Blanc A,
Benzoni G, Bottoni S, Bracco A, Crespi FCL, De France G, Iskra ŁW,
Jentschel M, Köster U, Michelagnoli C, Mutti P, Pietralla N, Simpson
G, Soldner T, Ur C, Urban W and Werner V (2018), "The γ-ray spectroscopy studies of low-spin structures in 210Bi and 206Tl using cold neutron capture reactions", EPJ Web of Conferences. Vol. 193 |
| Abstract: The γ-coincidence studies of low-spin structures of 210Bi and 206Tl are presented. The 210Bi nucleus, populated in thermal neutron capture reaction, was investigated using EXILL HPGe array at Institut Laue-Langevin in Grenoble. The experimental results were compared to the shell-model calculations allowing to draw the conclusions on the nature of the low-spin excitations populated below the neutron binding energy in 210Bi (4.6 MeV). It has been found that some levels cannot be described by the valence proton and neutron couplings, but may arise from couplings of valence particles to the 3- octupole phonon of the doubly magic 208Pb core. Moreover, preliminary results of a low-spin structure measurements of 206Tl by the γ-coincidence technique, making use of the 205Tl(n,γ)206Tl reaction at the FIPPS prompt γ-ray spectroscopy facility of ILL are shown. The population of a large number of excited states of 206Tl above the ground state up to the neutron binding energy (at 6.5 MeV), within a few units of spin is expected. The analysis involving double and triple γ-coincidences and γγ-angular correlations will allow to significantly extend the experimental information on the energy and spin-parity of the levels in 206Tl. This will help shedding light on the proton-hole and neutron-hole couplings near the doubly magic core 208Pb. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{Cieplicka-Oryńczak2018,
author = {Cieplicka-Oryńczak, Natalia and Leoni, Silvia and Fornal, Bogdan and Bazzacco, DIno and Blanc, Aurelien and Benzoni, Giovanna and Bottoni, Simone and Bracco, Angela and Crespi, Fabio C. L. and De France, Gilles and Iskra, Łukasz W. and Jentschel, Michael and Köster, Ulli and Michelagnoli, Caterina and Mutti, Paolo and Pietralla, Norbert and Simpson, Gary and Soldner, Torsten and Ur, Calin and Urban, Waldemar and Werner, Volker},
editor = {Koster U.},
title = {The γ-ray spectroscopy studies of low-spin structures in 210Bi and 206Tl using cold neutron capture reactions},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {193},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057843658&doi=10.1051%2fepjconf%2f201819305007&partnerID=40&md5=81752d002336e97f8205cb5be750345d},
doi = {10.1051/epjconf/201819305007}
}
|
| Cieplicka-Orynczak N, Michelagnoli C, Leoni S, Fornal B, Benzoni
G, Blanc A, Bottoni S, Crespi F, Iskra Ł, Jentschel M, Köster U,
Mutti P, Pietralla N, Ruiz-Martinez E and Werner V (2018), "The low-spin structure of 206Tl studied by γ-ray spectroscopy from thermal neutron capture reaction", Acta Physica Polonica B. Vol. 49(3), pp. 561 – 566. |
| Abstract: The low-spin structure of the 206Tl nucleus has been investigated with the FIPPS prompt γray spectrometer of ILL making use of the 205Tl(n;γ)206Tl reaction and the γcoincidence technique. A large number of excitations up to the neutron binding energy (at 6.5 MeV) in 206Tl were observed. Preliminary results of the data analysis provided the information on the decay scheme of the capture state in 206Tl and on the multipolarities of a number of rays. The comparison of the experimental data with shell-model calculations will help describing the proton-hole and neutron-hole couplings near the doubly magic core 208Pb, benchmarking single-particle levels and two-body matrix elements of the residual interaction in this important region of the nuclear chart. © 2018 Jagellonian University. All rights reserved. |
BibTeX:
@article{Cieplicka-Orynczak2018561,
author = {Cieplicka-Orynczak, N. and Michelagnoli, C. and Leoni, S. and Fornal, B. and Benzoni, G. and Blanc, A. and Bottoni, S. and Crespi, F.C.L. and Iskra, Ł.W. and Jentschel, M. and Köster, U. and Mutti, P. and Pietralla, N. and Ruiz-Martinez, E. and Werner, V.},
title = {The low-spin structure of 206Tl studied by -ray spectroscopy from thermal neutron capture reaction},
journal = {Acta Physica Polonica B},
year = {2018},
volume = {49},
number = {3},
pages = {561 – 566},
note = {Cited by: 4; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044855681&doi=10.5506%2fAPhysPolB.49.561&partnerID=40&md5=d5b5a6f664813fd2fd98cb384af81c57},
doi = {10.5506/APhysPolB.49.561}
}
|
| Cubiss J, Barzakh A, Seliverstov M, Andreyev A, Andel B, Antalic
S, Ascher P, Atanasov D, Beck D, Bieroń J, Blaum K, Borgmann C,
Breitenfeldt M, Capponi L, Cocolios T, Day Goodacre T, Derkx X, De
Witte H, Elseviers J, Fedorov D, Fedosseev V, Fritzsche S, Gaffney
L, George S, Ghys L, Heßberger F, Huyse M, Imai N, Kalaninová Z,
Kisler D, Köster U, Kowalska M, Kreim S, Lane J, Liberati V, Lunney
D, Lynch K, Manea V, Marsh B, Mitsuoka S, Molkanov P, Nagame Y,
Neidherr D, Nishio K, Ota S, Pauwels D, Popescu L, Radulov D,
Rapisarda E, Revill J, Rosenbusch M, Rossel R, Rothe S, Sandhu K,
Schweikhard L, Sels S, Truesdale V, Van Beveren C, Van Den Bergh P,
Wakabayashi Y, Van Duppen P, Wendt K, Wienholtz F, Whitmore B,
Wilson G, Wolf R and Zuber K (2018), "Charge radii and electromagnetic moments of 195–211At ", Physical Review C. Vol. 97(5) |
| Abstract: Hyperfine-structure parameters and isotope shifts of At195-211 have been measured for the first time at CERN-ISOLDE, using the in-source resonance-ionization spectroscopy method. The hyperfine structures of isotopes were recorded using a triad of experimental techniques for monitoring the photo-ion current. The Multi-Reflection Time-of-Flight Mass Spectrometer, in connection with a high-resolution electron multiplier, was used as an ion-counting setup for isotopes that either were affected by strong isobaric contamination or possessed a long half-life; the ISOLDE Faraday cups were used for cases with high-intensity beams; and the Windmill decay station was used for short-lived, predominantly α-decaying nuclei. The electromagnetic moments and changes in the mean-square charge radii of the astatine nuclei have been extracted from the measured hyperfine-structure constants and isotope shifts. This was only made possible by dedicated state-of-the-art large-scale atomic computations of the electronic factors and the specific mass shift of atomic transitions in astatine that are needed for these extractions. By comparison with systematics, it was possible to assess the reliability of the results of these calculations and their ascribed uncertainties. A strong deviation in the ground-state mean-square charge radii of the lightest astatine isotopes, from the trend of the (spherical) lead isotopes, is interpreted as the result of an onset of deformation. This behavior bears a resemblance to the deviation observed in the isotonic polonium isotopes. Cases for shape coexistence have been identified in At197,199, for which a significant difference in the charge radii for ground (9/2-) and isomeric (1/2+) states has been observed. © 2018 authors. |
BibTeX:
@article{Cubiss2018,
author = {Cubiss, J.G. and Barzakh, A.E. and Seliverstov, M.D. and Andreyev, A.N. and Andel, B. and Antalic, S. and Ascher, P. and Atanasov, D. and Beck, D. and Bieroń, J. and Blaum, K. and Borgmann, Ch. and Breitenfeldt, M. and Capponi, L. and Cocolios, T.E. and Day Goodacre, T. and Derkx, X. and De Witte, H. and Elseviers, J. and Fedorov, D.V. and Fedosseev, V.N. and Fritzsche, S. and Gaffney, L.P. and George, S. and Ghys, L. and Heßberger, F.P. and Huyse, M. and Imai, N. and Kalaninová, Z. and Kisler, D. and Köster, U. and Kowalska, M. and Kreim, S. and Lane, J.F.W. and Liberati, V. and Lunney, D. and Lynch, K.M. and Manea, V. and Marsh, B.A. and Mitsuoka, S. and Molkanov, P.L. and Nagame, Y. and Neidherr, D. and Nishio, K. and Ota, S. and Pauwels, D. and Popescu, L. and Radulov, D. and Rapisarda, E. and Revill, J.P. and Rosenbusch, M. and Rossel, R.E. and Rothe, S. and Sandhu, K. and Schweikhard, L. and Sels, S. and Truesdale, V.L. and Van Beveren, C. and Van Den Bergh, P. and Wakabayashi, Y. and Van Duppen, P. and Wendt, K.D.A. and Wienholtz, F. and Whitmore, B.W. and Wilson, G.L. and Wolf, R.N. and Zuber, K.},
title = {Charge radii and electromagnetic moments of at 195-211},
journal = {Physical Review C},
year = {2018},
volume = {97},
number = {5},
note = {Cited by: 30; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048226680&doi=10.1103%2fPhysRevC.97.054327&partnerID=40&md5=c5c3abca54d3f98f6a9bfb7e83f8a8a1},
doi = {10.1103/PhysRevC.97.054327}
}
|
| Damone L, Barbagallo M, Mastromarco M, Mengoni A, Cosentino L,
Maugeri E, Heinitz S, Schumann D, Dressler R, Käppeler F, Colonna N,
Finocchiaro P, Andrzejewski J, Perkowski J, Gawlik A, Aberle O,
Altstadt S, Ayranov M, Audouin L, Bacak M, Balibrea-Correa J, Ballof
J, Bécares V, Bečvář F, Beinrucker C, Bellia G, Bernardes A,
Berthoumieux E, Billowes J, Borge M, Bosnar D, Brown A, Brugger M,
Busso M, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Cardella R,
Casanovas A, Castelluccio D, Catherall R, Cerutti F, Chen Y,
Chiaveri E, Correia J, Cortés G, Cortés-Giraldo M, Cristallo S,
Diakaki M, Dietz M, Domingo-Pardo C, Dorsival A, Dupont E, Duran I,
Fernandez-Dominguez B, Ferrari A, Ferreira P, Furman W, Ganesan S,
García-Rios A, Gilardoni S, Glodariu T, Göbel K, Gonçalves I,
González-Romero E, Goodacre T, Griesmayer E, Guerrero C, Gunsing F,
Harada H, Heftrich T, Heyse J, Jenkins D, Jericha E, Johnston K,
Kadi Y, Kalamara A, Katabuchi T, Kavrigin P, Kimura A, Kivel N,
Köster U, Kokkoris M, Krtička M, Kurtulgil D, Leal-Cidoncha E,
Lederer-Woods C, Leeb H, Lerendegui-Marco J, Lo Meo S, Lonsdale S,
Losito R, Macina D, Marganiec J, Marsh B, Martínez T, Masi A,
Massimi C, Mastinu P, Matteucci F, Mazzone A, Mendoza E, Milazzo P,
Mingrone F, Mirea M, Musumarra A, Negret A, Nolte R, Oprea A,
Patronis N, Pavlik A, Piersanti L, Piscopo M, Plompen A, Porras I,
Praena J, Quesada J, Radeck D, Rajeev K, Rauscher T, Reifarth R,
Riego-Perez A, Rothe S, Rout P, Rubbia C, Ryan J, Sabaté-Gilarte M,
Saxena A, Schell J, Schillebeeckx P, Schmidt S, Sedyshev P, Seiffert
C, Smith A, Sosnin N, Stamatopoulos A, Stora T, Tagliente G, Tain J,
Tarifeño-Saldivia A, Tassan-Got L, Tsinganis A, Valenta S, Vannini
G, Variale V, Vaz P, Ventura A, Vlachoudis V, Vlastou R, Wallner A,
Warren S, Weigand M, Weiß C, Wolf C, Woods P, Wright T and Žugec P
(2018), "7Be(n,p)7Li Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n_TOF at CERN", Physical Review Letters. Vol. 121(4) |
| Abstract: We report on the measurement of the Be7(n,p)Li7 cross section from thermal to approximately 325 keV neutron energy, performed in the high-flux experimental area (EAR2) of the n-TOF facility at CERN. This reaction plays a key role in the lithium yield of the big bang nucleosynthesis (BBN) for standard cosmology. The only two previous time-of-flight measurements performed on this reaction did not cover the energy window of interest for BBN, and they showed a large discrepancy between each other. The measurement was performed with a Si telescope and a high-purity sample produced by implantation of a Be7 ion beam at the ISOLDE facility at CERN. While a significantly higher cross section is found at low energy, relative to current evaluations, in the region of BBN interest, the present results are consistent with the values inferred from the time-reversal Li7(p,n)Be7 reaction, thus yielding only a relatively minor improvement on the so-called cosmological lithium problem. The relevance of these results on the near-threshold neutron production in the p+Li7 reaction is also discussed. © 2018 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
BibTeX:
@article{Damone2018,
author = {Damone, L. and Barbagallo, M. and Mastromarco, M. and Mengoni, A. and Cosentino, L. and Maugeri, E. and Heinitz, S. and Schumann, D. and Dressler, R. and Käppeler, F. and Colonna, N. and Finocchiaro, P. and Andrzejewski, J. and Perkowski, J. and Gawlik, A. and Aberle, O. and Altstadt, S. and Ayranov, M. and Audouin, L. and Bacak, M. and Balibrea-Correa, J. and Ballof, J. and Bécares, V. and Bečvář, F. and Beinrucker, C. and Bellia, G. and Bernardes, A.P. and Berthoumieux, E. and Billowes, J. and Borge, M.J.G. and Bosnar, D. and Brown, A. and Brugger, M. and Busso, M. and Caamaño, M. and Calviño, F. and Calviani, M. and Cano-Ott, D. and Cardella, R. and Casanovas, A. and Castelluccio, D.M. and Catherall, R. and Cerutti, F. and Chen, Y.H. and Chiaveri, E. and Correia, J.G.M. and Cortés, G. and Cortés-Giraldo, M.A. and Cristallo, S. and Diakaki, M. and Dietz, M. and Domingo-Pardo, C. and Dorsival, A. and Dupont, E. and Duran, I. and Fernandez-Dominguez, B. and Ferrari, A. and Ferreira, P. and Furman, W. and Ganesan, S. and García-Rios, A. and Gilardoni, S. and Glodariu, T. and Göbel, K. and Gonçalves, I.F. and González-Romero, E. and Goodacre, T.D. and Griesmayer, E. and Guerrero, C. and Gunsing, F. and Harada, H. and Heftrich, T. and Heyse, J. and Jenkins, D.G. and Jericha, E. and Johnston, K. and Kadi, Y. and Kalamara, A. and Katabuchi, T. and Kavrigin, P. and Kimura, A. and Kivel, N. and Köster, U. and Kokkoris, M. and Krtička, M. and Kurtulgil, D. and Leal-Cidoncha, E. and Lederer-Woods, C. and Leeb, H. and Lerendegui-Marco, J. and Lo Meo, S. and Lonsdale, S.J. and Losito, R. and Macina, D. and Marganiec, J. and Marsh, B. and Martínez, T. and Masi, A. and Massimi, C. and Mastinu, P. and Matteucci, F. and Mazzone, A. and Mendoza, E. and Milazzo, P.M. and Mingrone, F. and Mirea, M. and Musumarra, A. and Negret, A. and Nolte, R. and Oprea, A. and Patronis, N. and Pavlik, A. and Piersanti, L. and Piscopo, M. and Plompen, A. and Porras, I. and Praena, J. and Quesada, J.M. and Radeck, D. and Rajeev, K. and Rauscher, T. and Reifarth, R. and Riego-Perez, A. and Rothe, S. and Rout, P. and Rubbia, C. and Ryan, J. and Sabaté-Gilarte, M. and Saxena, A. and Schell, J. and Schillebeeckx, P. and Schmidt, S. and Sedyshev, P. and Seiffert, C. and Smith, A.G. and Sosnin, N.V. and Stamatopoulos, A. and Stora, T. and Tagliente, G. and Tain, J.L. and Tarifeño-Saldivia, A. and Tassan-Got, L. and Tsinganis, A. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Warren, S. and Weigand, M. and Weiß, C. and Wolf, C. and Woods, P.J. and Wright, T. and Žugec, P.},
title = {Be 7 (n,p) Li 7 Reaction and the Cosmological Lithium Problem: Measurement of the Cross Section in a Wide Energy Range at n-TOF at CERN},
journal = {Physical Review Letters},
year = {2018},
volume = {121},
number = {4},
note = {Cited by: 47; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050773670&doi=10.1103%2fPhysRevLett.121.042701&partnerID=40&md5=5c6e8bc80c1fbbcadae26f8c7afbaf32},
doi = {10.1103/PhysRevLett.121.042701}
}
|
| De_France G, Blanc A, Drouet F, Jentschel M, Köster U, Mutti P,
Régis J, Simpson G, Soldner T, Stezowski O, Ur C, Urban W and
Vancrayenest A (2018), "EXOGAM at the ILL: The EXILL campaign", Journal of Physics: Conference Series. Vol. 966(1) |
| Abstract: A combination of germanium detectors has been installed at the PF1B neutron guide of the ILL to perform the prompt spectroscopy of neutron-rich nuclei produced in the neutron-capture induced-fission of 235U and 241Pu. Radiative capture reactions on rare targets have also been performed. LaBr3 detectors from the FATIMA collaboration have also been installed in complement with the EXOGAM clovers to measure lifetimes of low-lying excited states. The measured characteristics indicate very good performances of the overall setup. Some recent results will be discussed. © Published under licence by IOP Publishing Ltd. |
BibTeX:
@conference{De_France2018,
author = {De_France, G. and Blanc, A. and Drouet, F. and Jentschel, M. and Köster, U. and Mutti, P. and Régis, J.M. and Simpson, G. and Soldner, T. and Stezowski, O. and Ur, C.A. and Urban, W. and Vancrayenest, A.},
editor = {Gargano A. and Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, Napoli and Coraggio L. and Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, Napoli and Itaco N. and Universita della Campania, INFN- Sezione di Napoli, Viale Lincoln 5, Caserta},
title = {EXOGAM at the ILL: The EXILL campaign},
journal = {Journal of Physics: Conference Series},
year = {2018},
volume = {966},
number = {1},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85043253543&doi=10.1088%2f1742-6596%2f966%2f1%2f012012&partnerID=40&md5=49c07f47f8668cd28b3ee64a7126d35e},
doi = {10.1088/1742-6596/966/1/012012}
}
|
| De_France G, Blanc A, Jentschel M, Köster U, Leoni S, Mutti P, Simpson G, Soldner T and Urban W (2018), "EXOGAM at the ILL: The EXILL campaign", EPJ Web of Conferences. Vol. 178 |
| Abstract: Radiative capture reactions on rare targets and prompt spectroscopy of neutron-rich nuclei produced in the neutron-capture induced-fission of 235U and 241Pu have been performed at the Institut Laue-Langevin (ILL). The high efficiency germanium (Ge) EXOGAM array has been used, complemented with Ge detectors from GASP and the ILL. LaBr3 detectors from the FATIMA collaboration have also been coupled to EXOGAM to measure lifetimes of lowlying excited states. The measured characteristics indicate very good performances of the overall setup. Some recent results will be discussed. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{De_France2018,
author = {De_France, Gilles and Blanc, Aurélien and Jentschel, Michael and Köster, Ulli and Leoni, Silvia and Mutti, Paolo and Simpson, Gary and Soldner, Torsten and Urban, Waldemar},
editor = {Sun Y.},
title = {EXOGAM at the ILL: The EXILL campaign},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {178},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047994193&doi=10.1051%2fepjconf%2f201817801004&partnerID=40&md5=2e92459b6f314ccc401424894bee0974},
doi = {10.1051/epjconf/201817801004}
}
|
| Kaya L, Vogt A, Reiter P, Müller-Gatermann C, Siciliano M,
Coraggio L, Itaco N, Gargano A, Arnswald K, Bazzacco D, Birkenbach
B, Blazhev A, Bracco A, Bruyneel B, Corradi L, Crespi F, De Angelis
G, Droste M, Eberth J, Farnea E, Fioretto E, Fransen C, Gadea A,
Giaz A, Görgen A, Gottardo A, Hadyńska-Klȩk K, Hess H, Hetzenegger
R, Hirsch R, John P, Jolie J, Jungclaus A, Korten W, Leoni S,
Lewandowski L, Lunardi S, Menegazzo R, Mengoni D, Michelagnoli C,
Mijatović T, Montagnoli G, Montanari D, Napoli D, Podolyák Z,
Pollarolo G, Recchia F, Rosiak D, Saed-Samii N, Şahin E, Scarlassara
F, Seidlitz M, Söderström P-A, Stefanini A, Stezowski O, Szilner S,
Szpak B, Ur C, Valiente-Dobón J, Weinert M, Wolf K and Zell K
(2018), "Millisecond 23/2+ isomers in the N = 79 isotones 133Xe and 135Ba", Physical Review C. Vol. 98(5) |
| Abstract: Detailed information on isomeric states in A≈135 nuclei is exploited to benchmark shell-model calculations in the region northwest of doubly magic nucleus Sn132. The N=79 isotones Xe133 and Ba135 are studied after multinucleon transfer in the Xe136+Pb208 reaction employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy and in a pulsed-beam experiment at the FN tandem accelerator of the University of Cologne, Germany utilizing a Be9+Te130 fusion-evaporation reaction at a beam energy of 40 MeV. Isomeric states are identified via delayed γ-ray spectroscopy. Hitherto tentative excitation energy, spin, and parity assignments of the 2107-keV Jπ=23/2+ isomer in Xe133 are confirmed and a half-life of T1/2=8.64(13) ms is measured. The 2388-keV state in Ba135 is identified as a Jπ=23/2+ isomer with a half-life of 1.06(4) ms. The new results show a smooth onset of isomeric Jπ=23/2+ states along the N=79 isotones and close a gap in the high-spin systematics towards the recently investigated Jπ=23/2+ isomer in Nd139. The resulting systematics of M2 reduced transition probabilities is discussed within the framework of the nuclear shell model. Latest large-scale shell-model calculations employing the SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings generally well and give insight into the structure of the isomers. © 2018 American Physical Society. |
BibTeX:
@article{Kaya2018,
author = {Kaya, L. and Vogt, A. and Reiter, P. and Müller-Gatermann, C. and Siciliano, M. and Coraggio, L. and Itaco, N. and Gargano, A. and Arnswald, K. and Bazzacco, D. and Birkenbach, B. and Blazhev, A. and Bracco, A. and Bruyneel, B. and Corradi, L. and Crespi, F.C.L. and De Angelis, G. and Droste, M. and Eberth, J. and Farnea, E. and Fioretto, E. and Fransen, C. and Gadea, A. and Giaz, A. and Görgen, A. and Gottardo, A. and Hadyńska-Klȩk, K. and Hess, H. and Hetzenegger, R. and Hirsch, R. and John, P.R. and Jolie, J. and Jungclaus, A. and Korten, W. and Leoni, S. and Lewandowski, L. and Lunardi, S. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Montagnoli, G. and Montanari, D. and Napoli, D. and Podolyák, Zs. and Pollarolo, G. and Recchia, F. and Rosiak, D. and Saed-Samii, N. and Şahin, E. and Scarlassara, F. and Seidlitz, M. and Söderström, P.-A. and Stefanini, A.M. and Stezowski, O. and Szilner, S. and Szpak, B. and Ur, C. and Valiente-Dobón, J.J. and Weinert, M. and Wolf, K. and Zell, K.O.},
title = {Millisecond 23/2+ isomers in the N=79 isotones Xe 133 and Ba 135},
journal = {Physical Review C},
year = {2018},
volume = {98},
number = {5},
note = {Cited by: 5; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057103569&doi=10.1103%2fPhysRevC.98.054312&partnerID=40&md5=00e6f9f37c5c2c3fb3c4e860167b53e6},
doi = {10.1103/PhysRevC.98.054312}
}
|
| Kaya L, Vogt A, Reiter P, Siciliano M, Birkenbach B, Blazhev A,
Coraggio L, Teruya E, Yoshinaga N, Higashiyama K, Arnswald K,
Bazzacco D, Bracco A, Bruyneel B, Corradi L, Crespi F, De Angelis G,
Eberth J, Farnea E, Fioretto E, Fransen C, Fu B, Gadea A, Gargano A,
Giaz A, Görgen A, Gottardo A, Hadyńska-Klȩk K, Hess H, Hetzenegger
R, Hirsch R, Itaco N, John P, Jolie J, Jungclaus A, Korten W, Leoni
S, Lewandowski L, Lunardi S, Menegazzo R, Mengoni D, Michelagnoli C,
Mijatović T, Montagnoli G, Montanari D, Müller-Gatermann C, Napoli
D, Podolyák Z, Pollarolo G, Pullia A, Queiser M, Recchia F, Rosiak
D, Saed-Samii N, Şahin E, Scarlassara F, Schneiders D, Seidlitz M,
Siebeck B, Smith J, Söderström P-A, Stefanini A, Steinbach T,
Stezowski O, Szilner S, Szpak B, Ur C, Valiente-Dobón J, Wolf K and
Zell K (2018), "High-spin structure in the transitional nucleus 131Xe : Competitive neutron and proton alignment in the vicinity of the N = 82 shell closure", Physical Review C. Vol. 98(1) |
| Abstract: The transitional nucleus Xe131 is investigated after multinucleon transfer in the Xe136+Pb208 and Xe136+U238 reactions employing the high-resolution Advanced γ-Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA at the Laboratori Nazionali di Legnaro, Italy, and as an elusive reaction product in the fusion-evaporation reaction Sn124(B11,p3n)Xe131 employing the High-efficiency Observatory for γ-Ray Unique Spectroscopy (HORUS) γ-ray array coupled to a double-sided silicon strip detector at the University of Cologne, Germany. The level scheme of Xe131 is extended to 5 MeV. A pronounced backbending is observed at ω≈0.4MeV along the negative-parity one-quasiparticle νh11/2(α=-1/2) band. The results are compared to the high-spin systematics of the Z=54 isotopes and the N=77 isotones. Large-scale shell-model calculations employing the PQM130, SN100PN, GCN50:82, SN100-KTH, and a realistic effective interaction reproduce the experimental findings and provide guidance to elucidate the structure of the high-spin states. Further calculations in Xe129-132 provide insight into the changing nuclear structure along the Xe chain towards the N=82 shell closure. Proton occupancy in the π0h11/2 orbital is found to be decisive for the description of the observed backbending phenomenon. © 2018 American Physical Society. |
BibTeX:
@article{Kaya2018,
author = {Kaya, L. and Vogt, A. and Reiter, P. and Siciliano, M. and Birkenbach, B. and Blazhev, A. and Coraggio, L. and Teruya, E. and Yoshinaga, N. and Higashiyama, K. and Arnswald, K. and Bazzacco, D. and Bracco, A. and Bruyneel, B. and Corradi, L. and Crespi, F.C.L. and De Angelis, G. and Eberth, J. and Farnea, E. and Fioretto, E. and Fransen, C. and Fu, B. and Gadea, A. and Gargano, A. and Giaz, A. and Görgen, A. and Gottardo, A. and Hadyńska-Klȩk, K. and Hess, H. and Hetzenegger, R. and Hirsch, R. and Itaco, N. and John, P.R. and Jolie, J. and Jungclaus, A. and Korten, W. and Leoni, S. and Lewandowski, L. and Lunardi, S. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Montagnoli, G. and Montanari, D. and Müller-Gatermann, C. and Napoli, D. and Podolyák, Zs. and Pollarolo, G. and Pullia, A. and Queiser, M. and Recchia, F. and Rosiak, D. and Saed-Samii, N. and Şahin, E. and Scarlassara, F. and Schneiders, D. and Seidlitz, M. and Siebeck, B. and Smith, J.F. and Söderström, P.-A. and Stefanini, A.M. and Steinbach, T. and Stezowski, O. and Szilner, S. and Szpak, B. and Ur, C. and Valiente-Dobón, J.J. and Wolf, K. and Zell, K.O.},
title = {High-spin structure in the transitional nucleus Xe 131: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure},
journal = {Physical Review C},
year = {2018},
volume = {98},
number = {1},
note = {Cited by: 13; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049790478&doi=10.1103%2fPhysRevC.98.014309&partnerID=40&md5=a4d85205b2c8f2cc7bc4181b971bea18},
doi = {10.1103/PhysRevC.98.014309}
}
|
| Koseoglou P, Werner V, Pietralla N, Ilieva S, Thürauf M, Bernards
C, Blanc A, Bruce A, Cakirli R, Cooper N, Fraile L, De France G,
Jentschel M, Jolie J, Koester U, Korten W, Kröll T, Lalkovski S,
Mach H, Mǎrginean N, Mutti P, Patel Z, Paziy V, Podolyák Z, Regan P,
Régis J-M, Roberts O, Saed-Samii N, Simpson G, Soldner T, Ur C,
Urban W, Wilmsen D and Wilson E (2018), "The boundary of the N = 90 shape phase transition: 148Ce", Journal of Physics: Conference Series. Vol. 1023(1) |
| Abstract: The even-even N=90 isotones with Z=60-66 are known to undergo a first order phase transition. Such a phase transition in atomic nuclei is characterized by a sudden change of the shape of the nucleus due to changes in the location of the potential minimum. In these proceedings we report a measurement of the B4/2 ratio of 148Ce, which will probe the location of the low-Z boundary of the N=90 phase transitional region. The measured B4/2 value is compared to the prediction from the X(5) symmetry within the interacting boson model at the critical point between the geometrical limits of vibrators and rigid/axial rotors. The EXILL&FATIMA campaign took place at the high-flux reactor of the Institut Laue Langevin, Grenoble, were 235U and 241Pu fission fragments were measured by a hybrid spectrometer consisting of high-resolution HPGe and fast LaBr3(Ce)-scintillator detectors. The fast LaBr3(Ce) detectors in combination with the generalized centroid difference method allowed lifetime measurements in the picosecond region. Furthermore, this kind of analysis can serve as preparation for the FATIMA experiments at FAIR. © Published under licence by IOP Publishing Ltd. |
BibTeX:
@conference{Koseoglou2018,
author = {Koseoglou, P. and Werner, V. and Pietralla, N. and Ilieva, S. and Thürauf, M. and Bernards, C. and Blanc, A. and Bruce, A.M. and Cakirli, R.B. and Cooper, N. and Fraile, L.M. and De France, G. and Jentschel, M. and Jolie, J. and Koester, U. and Korten, W. and Kröll, T. and Lalkovski, S. and Mach, H. and Mǎrginean, N. and Mutti, P. and Patel, Z. and Paziy, V. and Podolyák, Z. and Regan, P.H. and Régis, J.-M. and Roberts, O.J. and Saed-Samii, N. and Simpson, G.S. and Soldner, T. and Ur, C.A. and Urban, W. and Wilmsen, D. and Wilson, E.},
title = {The boundary of the N=90 shape phase transition: 148Ce},
journal = {Journal of Physics: Conference Series},
year = {2018},
volume = {1023},
number = {1},
note = {Cited by: 0; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048409805&doi=10.1088%2f1742-6596%2f1023%2f1%2f012022&partnerID=40&md5=907d467cf18c2d9fdd7597139ba24347},
doi = {10.1088/1742-6596/1023/1/012022}
}
|
| Licǎ R, Benzoni G, Rodríguez T, Borge M, Fraile L, Mach H, Morales
A, Madurga M, Sotty C, Vedia V, De Witte H, Benito J, Bernard R,
Berry T, Bracco A, Camera F, Ceruti S, Charviakova V,
Cieplicka-Oryńczak N, Costache C, Crespi F, Creswell J,
Fernandez-Martínez G, Fynbo H, Greenlees P, Homm I, Huyse M, Jolie
J, Karayonchev V, Köster U, Konki J, Kröll T, Kurcewicz J,
Kurtukian-Nieto T, Lazarus I, Lund M, Mǎrginean N, Mǎrginean R,
Mihai C, Mihai R, Negret A, Orduz A, Patyk Z, Pascu S, Pucknell V,
Rahkila P, Rapisarda E, Regis J, Robledo L, Rotaru F, Saed-Samii N,
Sánchez-Tembleque V, Stanoiu M, Tengblad O, Thuerauf M, Turturica A,
Van Duppen P and Warr N (2018), "Evolution of deformation in neutron-rich Ba isotopes up to A=150", Physical Review C. Vol. 97(2) |
| Abstract: The occurrence of octupolar shapes in the Ba isotopic chain was recently established experimentally up to N=90. To further extend the systematics, the evolution of shapes in the most neutron-rich members of the Z=56 isotopic chain accessible at present, Ba148,150, has been studied via β decay at the ISOLDE Decay Station. This paper reports on the first measurement of the positive- and negative-parity low-spin excited states of Ba150 and presents an extension of the β-decay scheme of Cs148. Employing the fast timing technique, half-lives for the 21+ level in both nuclei have been determined, resulting in T1/2=1.51(1) ns for Ba148 and T1/2=3.4(2) ns for Ba150. The systematics of low-spin states, together with the experimental determination of the B(E2:2+→0+) transition probabilities, indicate an increasing collectivity in Ba148-150, towards prolate deformed shapes. The experimental data are compared to symmetry conserving configuration mixing (SCCM) calculations, confirming an evolution of increasingly quadrupole deformed shapes with a definite octupolar character. © 2018 authors. Published by the American Physical Society. |
BibTeX:
@article{Licǎ2018,
author = {Licǎ, R. and Benzoni, G. and Rodríguez, T.R. and Borge, M.J.G. and Fraile, L.M. and Mach, H. and Morales, A.I. and Madurga, M. and Sotty, C.O. and Vedia, V. and De Witte, H. and Benito, J. and Bernard, R.N. and Berry, T. and Bracco, A. and Camera, F. and Ceruti, S. and Charviakova, V. and Cieplicka-Oryńczak, N. and Costache, C. and Crespi, F.C.L. and Creswell, J. and Fernandez-Martínez, G. and Fynbo, H. and Greenlees, P.T. and Homm, I. and Huyse, M. and Jolie, J. and Karayonchev, V. and Köster, U. and Konki, J. and Kröll, T. and Kurcewicz, J. and Kurtukian-Nieto, T. and Lazarus, I. and Lund, M.V. and Mǎrginean, N. and Mǎrginean, R. and Mihai, C. and Mihai, R.E. and Negret, A. and Orduz, A. and Patyk, Z. and Pascu, S. and Pucknell, V. and Rahkila, P. and Rapisarda, E. and Regis, J.M. and Robledo, L.M. and Rotaru, F. and Saed-Samii, N. and Sánchez-Tembleque, V. and Stanoiu, M. and Tengblad, O. and Thuerauf, M. and Turturica, A. and Van Duppen, P. and Warr, N.},
title = {Evolution of deformation in neutron-rich Ba isotopes up to A=150},
journal = {Physical Review C},
year = {2018},
volume = {97},
number = {2},
note = {Cited by: 12; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042133699&doi=10.1103%2fPhysRevC.97.024305&partnerID=40&md5=5126f65ba2d47ceb5c1bc056b02ba974},
doi = {10.1103/PhysRevC.97.024305}
}
|
| Régis J-M, Simpson G, MacH H, Blanc A, Jentschel M, Köster U,
Mutti P, Soldner T, De France G, Ur C, Urban W, Jolie J, Saed-Samii
N, Warr N, Fraile L, Paziy V, Regan P, Podolyák Z, Lalkovski S,
Bruce A, Kröll T, Korten W and Marginean N (2018), "The γ-γ Fast-timing technique and the EXILL&FATIMA campaign", EPJ Web of Conferences. Vol. 193 |
| Abstract: At the Institut Laue-Langevin in Grenoble, germanium-gated γ-γ fast-timing lifetime measurements of nuclear excited states in neutron-rich nuclei have been performed within a prompt γ-ray spectroscopy experimental campaign. We report on results obtained from the cold-neutron induced fission of 235U. The excited secondary fission products were stopped almost instantaneously within the thick target and the γ rays emitted were collected triggerlessly using the EXILL&FATIMA mixed array of HPGe and LaBr3(Ce) detectors. Precise lifetimes could be determined by analysing the γ-γ time difference spectra using the generalized centroid difference method. This picosecondsensitive method provides many advantages and is briefly explained. Still, the major source of systematic errors is related to the contribution of time-correlated Compton background. The EXILL&FATIMA results are discussed with respect to the typical energy-dependent timing behaviour of the background. According to the time response of the background, appropriate methods and a time correction for the sub-nanosecond regime are proposed. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{Régis2018,
author = {Régis, J.-M. and Simpson, G.S. and MacH, H. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Ur, C.A. and Urban, W. and Jolie, J. and Saed-Samii, N. and Warr, N. and Fraile, L.M. and Paziy, V. and Regan, P.H. and Podolyák, Zs. and Lalkovski, S. and Bruce, A.M. and Kröll, T. and Korten, W. and Marginean, N.},
editor = {Koster U.},
title = {The γ-γ Fast-timing technique and the EXILL&FATIMA campaign},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {193},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057849851&doi=10.1051%2fepjconf%2f201819304008&partnerID=40&md5=4564b3a24afbd4efd9221f4be66682cd},
doi = {10.1051/epjconf/201819304008}
}
|
| Rząca-Urban T, Urban W, Czerwiński M, Wiśniewski J, Blanc A, Faust
H, Jentschel M, Mutti P, Köster U, Soldner T, De France G, Simpson G
and Ur C (2018), "Low-spin excitations in 97Zr ", Physical Review C. Vol. 98(6) |
| Abstract: The main goal of this work is the determination of spins and parities of excited states in Zr97, among others the 2264.3-keV level, which had previously been tentatively reported as the 11/2- excitation corresponding to the h11/2 neutron orbital. Low-spin excited states in Zr97 were populated via the cold-neutron capture reaction. The γ rays emitted following the reaction were measured using the highly efficient array of high-purity germanium detectors, EXILL, at the Institut-Laue-Langevin (ILL), Grenoble. The primary γ rays deexciting the capture state in Zr97 were identified for the first time. The new, precise neutron binding energy in Zr97 of 5569.15(4) keV differs significantly from the value reported in the literature. The previously reported level scheme has been amended by several new low-spin levels. The (n,γ) data were complemented by a measurement of the β- decay of Y97 at the Lohengrin fission-fragment separator of the ILL, and the observation of the β- decay of Y97 populated in neutron-induced fission of U235 and measured using the EXILL Ge array. The combined data allowed unique spin-parity assignments for many levels in Zr97. The 2264.3-keV level, with a new spin-parity assignment of 9/2+, may correspond to the νg9/2 extruder orbital. © 2018 American Physical Society. |
BibTeX:
@article{Rząca-Urban2018,
author = {Rząca-Urban, T. and Urban, W. and Czerwiński, M. and Wiśniewski, J. and Blanc, A. and Faust, H. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Low-spin excitations in Zr 97},
journal = {Physical Review C},
year = {2018},
volume = {98},
number = {6},
note = {Cited by: 7},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058672947&doi=10.1103%2fPhysRevC.98.064315&partnerID=40&md5=1757f96632ab323c9e45bf474aab160f},
doi = {10.1103/PhysRevC.98.064315}
}
|
| Simpson G, Grachev I, Thiamova G, Ramdhane M, Sieja K, Blanc A,
Jentschel M, Köster U, Mutti P, Soldner T, De France G, Ur C and
Urban W (2018), "Excited States and Collectivity in 88Se", EPJ Web of Conferences. Vol. 193 |
| Abstract: The γ decays of excited states in the very neutron-rich nucleus 88Se have been observed following the cold neutron-induced fission of 235U at the PF1B facility of the Institut Laue-Langevin (ILL), Grenoble. The EXILL array was used to measure γ - γ - γ coincidences, which were then analysed to build a level scheme of 88Se. A low (2+ 1) energy hints at the onset of quadrupole deformation and the identification of possible members of a (2+ 2) band provide evidence for γ vibrations. Shell-model calculations using a 78Ni core reproduce the experimental decay scheme well, implying that interactions between particles in the π f5/2 p and vsd orbits are responsible for much of the collectivity present. The algebraic collective model has also been used to interpret the experimental data, showing that that the experimental spectrum is consistent with 88Se being a transitional nucleus, possessing weak static β deformation and γ instability. © The Authors, published by EDP Sciences, 2018. |
BibTeX:
@conference{Simpson2018,
author = {Simpson, G. and Grachev, I. and Thiamova, G. and Ramdhane, M. and Sieja, K. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Ur, C.A. and Urban, W.},
editor = {Koster U.},
title = {Excited States and Collectivity in 88Se},
journal = {EPJ Web of Conferences},
year = {2018},
volume = {193},
note = {Cited by: 0; All Open Access, Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85057893537&doi=10.1051%2fepjconf%2f201819305002&partnerID=40&md5=7f4366f59a7adbfd337fbb5e8f705846},
doi = {10.1051/epjconf/201819305002}
}
|
| Wisniewski J, Urban W, Rzaca-Urban T, Köster U, Michelagnoli C,
Jentschel M and Mutti P (2018), "Evolution of γ collectivity – (N;γ) spectroscopy of 98Mo with fipps", Acta Physica Polonica B. Vol. 49(3), pp. 547 – 553. |
| Abstract: Excited states in 98Mo have been populated in (n;γ) reaction and studied using γray coincidences measured with Germanium Clover detectors of the new instrument FIPPS. The aim of the study is to investigate the evolution of γcollectivity in Mo isotopes in its early-development stage. The ground state of 97Mo 5/2+ should allow the observation of the band in 98Mo up to spin 7+. This is sufficient to measure interesting properties of the band, such as mixing ratios. © 2018 Jagellonian University. All rights reserved. |
BibTeX:
@article{Wisniewski2018547,
author = {Wisniewski, J. and Urban, W. and Rzaca-Urban, T. and Köster, U. and Michelagnoli, C. and Jentschel, M. and Mutti, P.},
title = {Evolution of γ collectivity - (N;γ) spectroscopy of 98Mo with fipps},
journal = {Acta Physica Polonica B},
year = {2018},
volume = {49},
number = {3},
pages = {547 – 553},
note = {Cited by: 1},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044846321&doi=10.5506%2fAPhysPolB.49.547&partnerID=40&md5=51095262efc6c8a20e3558014a6692f1},
doi = {10.5506/APhysPolB.49.547}
}
|
| Abel C, Ayres N, Ban G, Bison G, Bodek K, Bondar V, Daum M,
Fairbairn M, Flambaum V, Geltenbort P, Green K, Griffith W, Van Der
Grinten M, Grujić Z, Harris P, Hild N, Iaydjiev P, Ivanov S,
Kasprzak M, Kermaidic Y, Kirch K, Koch H-C, Komposch S, Koss P,
Kozela A, Krempel J, Lauss B, Lefort T, Lemiére Y, Marsh D,
Mohanmurthy P, Mtchedlishvili A, Musgrave M, Piegsa F, Pignol G,
Rawlik M, Rebreyend D, Ries D, Roccia S, Rozpȩdzik D,
Schmidt-Wellenburg P, Severijns N, Shiers D, Stadnik Y, Weis A,
Wursten E, Zejma J and Zsigmond G (2017), "Search for axionlike dark matter through nuclear spin precession in electric and magnetic fields", Physical Review X. Vol. 7(4) |
| Abstract: We report on a search for ultralow-mass axionlike dark matter by analyzing the ratio of the spinprecession frequencies of stored ultracold neutrons and 199Hg atoms for an axion-induced oscillating electric dipole moment of the neutron and an axion-wind spin-precession effect. No signal consistent with dark matter is observed for the axion mass range 10-24 ≤ ma ≤ 10-17 eV. Our null result sets the first laboratory constraints on the coupling of axion dark matter to gluons, which improve on astrophysical limits by up to 3 orders of magnitude, and also improves on previous laboratory constraints on the axion coupling to nucleons by up to a factor of 40. |
BibTeX:
@article{Abel2017,
author = {Abel, C. and Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Bondar, V. and Daum, M. and Fairbairn, M. and Flambaum, V.V. and Geltenbort, P. and Green, K. and Griffith, W.C. and Van Der Grinten, M. and Grujić, Z.D. and Harris, P.G. and Hild, N. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Koch, H.-C. and Komposch, S. and Koss, P.A. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemiére, Y. and Marsh, D.J.E. and Mohanmurthy, P. and Mtchedlishvili, A. and Musgrave, M. and Piegsa, F.M. and Pignol, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpȩdzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Shiers, D. and Stadnik, Y.V. and Weis, A. and Wursten, E. and Zejma, J. and Zsigmond, G.},
title = {Search for axionlike dark matter through nuclear spin precession in electric and magnetic fields},
journal = {Physical Review X},
year = {2017},
volume = {7},
number = {4},
note = {Cited by: 159; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034430781&doi=10.1103%2fPhysRevX.7.041034&partnerID=40&md5=35155c7b8afedb2486b5e3cd6324b5cb},
doi = {10.1103/PhysRevX.7.041034}
}
|
| Ansari S, Régis J-M, Jolie J, Saed-Samii N, Warr N, Korten W,
Zielińska M, Salsac M-D, Blanc A, Jentschel M, Köster U, Mutti P,
Soldner T, Simpson G, Drouet F, Vancraeyenest A, De France G,
Clément E, Stezowski O, Ur C, Urban W, Regan P, Podolyák Z, Larijani
C, Townsley C, Carroll R, Wilson E, Mach H, Fraile L, Paziy V,
Olaizola B, Vedia V, Bruce A, Roberts O, Smith J, Scheck M, Kröll T,
Hartig A-L, Ignatov A, Ilieva S, Lalkovski S, Mǎrginean N, Otsuka T,
Shimizu N, Togashi T and Tsunoda Y (2017), "Experimental study of the lifetime and phase transition in neutron-rich 98,100,102Zr", Physical Review C. Vol. 96(5) |
| Abstract: Rapid shape changes are observed for neutron-rich nuclei with A around 100. In particular, a sudden onset of ground-state deformation is observed in the Zr and Sr isotopic chains at N = 60: Low-lying states in N≤58 nuclei are nearly spherical, while those with N≥60 have a rotational character. Nuclear lifetimes as short as a few picoseconds can be measured using fast-timing techniques with LaBr3(Ce) scintillators, yielding a key ingredient in the systematic study of the shape evolution in this region. We used neutron-induced fission of Pu241 and U235 to study lifetimes of excited states in fission fragments in the A∼100 region with the EXILL-FATIMA array located at the PF1B cold neutron beam line at the Institut Laue-Langevin. In particular, we applied the generalized centroid difference method to deduce lifetimes of low-lying states for the nuclei Zr98 (N = 58), Zr100, and Zr102 (N≥60). The results are discussed in the context of the presumed phase transition in the Zr chain by comparing the experimental transition strengths with the theoretical calculations using the interacting boson model and the Monte Carlo shell model. © 2017 American Physical Society. |
BibTeX:
@article{Ansari2017,
author = {Ansari, S. and Régis, J.-M. and Jolie, J. and Saed-Samii, N. and Warr, N. and Korten, W. and Zielińska, M. and Salsac, M.-D. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G.S. and Drouet, F. and Vancraeyenest, A. and De France, G. and Clément, E. and Stezowski, O. and Ur, C.A. and Urban, W. and Regan, P.H. and Podolyák, Zs. and Larijani, C. and Townsley, C. and Carroll, R. and Wilson, E. and Mach, H. and Fraile, L.M. and Paziy, V. and Olaizola, B. and Vedia, V. and Bruce, A.M. and Roberts, O.J. and Smith, J.F. and Scheck, M. and Kröll, T. and Hartig, A.-L. and Ignatov, A. and Ilieva, S. and Lalkovski, S. and Mǎrginean, N. and Otsuka, T. and Shimizu, N. and Togashi, T. and Tsunoda, Y.},
title = {Experimental study of the lifetime and phase transition in neutron-rich Zr 98,100,102},
journal = {Physical Review C},
year = {2017},
volume = {96},
number = {5},
note = {Cited by: 35; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85036640870&doi=10.1103%2fPhysRevC.96.054323&partnerID=40&md5=1e7ae81363a0822ad2b598acd46ce124},
doi = {10.1103/PhysRevC.96.054323}
}
|
| Cieplicka-Oryńczak N, Bocchi G, Leoni S, Fornal B, Bottoni S,
Jentschel M, Köster U, Mutti P, Soldner T, Blanc A, De France G,
Simpson G, Türler A, Urban W and Ur C (2017), "Study of 41Ca via cold neutron capture", Acta Physica Polonica B. Vol. 48(3), pp. 577 – 580. |
| Abstract: The low-spin structure of the 41Ca isotope, populated by neutron capture, has been investigated by high resolution γ-spectroscopy techniques. The experiment was performed at the PF1B cold neutron facility at the Institut Laue-Langevin (Grenoble, France) employing the EXILL array, consisting of 46 HPGe crystals. Several new γ rays have been observed and two excited states were newly established. |
BibTeX:
@article{Cieplicka-Oryńczak2017577,
author = {Cieplicka-Oryńczak, N. and Bocchi, G. and Leoni, S. and Fornal, B. and Bottoni, S. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Blanc, A. and De France, G. and Simpson, G.S. and Türler, A. and Urban, W. and Ur, C.A.},
title = {Study of 41Ca via cold neutron capture},
journal = {Acta Physica Polonica B},
year = {2017},
volume = {48},
number = {3},
pages = {577 – 580},
note = {Cited by: 1; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017177796&doi=10.5506%2fAPhysPolB.48.577&partnerID=40&md5=3c4cf05e64112ed8f018b3f50301035f},
doi = {10.5506/APhysPolB.48.577}
}
|
| Cieplicka-Oryńczak N, Leoni S, Fornal B, Bazzacco D, Blanc A,
Bocchi G, Bottoni S, De France G, Jentschel M, Köster U, Mutti P,
Simpson G, Soldner T, Szpak B, Ur C and Urban W (2017), "Reduction in the uncertainty of the neutron-capture cross section of 210Bi: Impact of a precise multipolarity measurement of the 2− → 1− main ground-state transition", EPJ Web of Conferences. Vol. 146 |
| Abstract: The mixing ratio of the main 320-keV, M1 + E2 ground-state γ transition in 210Bi has been more precisely quantified, allowing a significant reduction in the uncertainty of measurements of the neutron-capture cross section to the ground state of 210Bi from 25% to 0.9%. Accurate values for neutron-capture cross sections to both the ground and long-lived 9- isomeric state at 271 keV in 210Bi are of particular importance as Pb-Bi finds increased usage in Accelerator Driven Systems. © The Authors, published by EDP Sciences, 2017. |
BibTeX:
@conference{Cieplicka-Oryńczak2017,
author = {Cieplicka-Oryńczak, Natalia and Leoni, Silvia and Fornal, Bogdan and Bazzacco, Dino and Blanc, Aurelien and Bocchi, Giovanni and Bottoni, Simone and De France, Gilles and Jentschel, Michael and Köster, Ulli and Mutti, Paolo and Simpson, Gary and Soldner, Torsten and Szpak, Bartłomiej and Ur, Calin and Urban, Waldemar},
editor = {Siegler P. and Mondelaers W. and Plompen A. and Hambsch F.-J. and Schillebeeckx P. and Kopecky S. and Heyse J. and Oberstedt S.},
title = {Reduction in the uncertainty of the neutron-capture cross section of 210Bi: Impact of a precise multipolarity measurement of the 2- → 1- main ground-state transition},
journal = {EPJ Web of Conferences},
year = {2017},
volume = {146},
note = {Cited by: 0; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85030482550&doi=10.1051%2fepjconf%2f201714610011&partnerID=40&md5=99e6b6fe640c163e2520543b0c0e4db1},
doi = {10.1051/epjconf/201714610011}
}
|
| Ficek F, Kimball DFJ, Kozlov MG, Leefer N, Pustelny S and Budker D
(2017), "Constraints on exotic spin-dependent interactions between electrons from helium fine-structure spectroscopy", Physical Review A. Vol. 95(3) |
| Abstract: Agreement between theoretical calculations of atomic structure and spectroscopic measurements is used to constrain possible contribution of exotic spin-dependent interactions between electrons to the energy differences between states in helium-4. In particular, constraints on dipole-dipole interactions associated with the exchange of pseudoscalar bosons (such as axions or axion-like particles) with masses 10-2"m"104eV are improved by a factor of ∼100. The first atomic-scale constraints on several exotic velocity-dependent dipole-dipole interactions are established as well. © 2017 American Physical Society. |
BibTeX:
@article{Ficek2017,
author = {Ficek, Filip and Kimball, Derek F. Jackson and Kozlov, Mikhail G. and Leefer, Nathan and Pustelny, Szymon and Budker, Dmitry},
title = {Constraints on exotic spin-dependent interactions between electrons from helium fine-structure spectroscopy},
journal = {Physical Review A},
year = {2017},
volume = {95},
number = {3},
note = {Cited by: 45; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85016158004&doi=10.1103%2fPhysRevA.95.032505&partnerID=40&md5=22fd9a0c427d26a706258cc2622f2646},
doi = {10.1103/PhysRevA.95.032505}
}
|
| Gratchev I, Simpson G, Thiamova G, Ramdhane M, Sieja K, Blanc A,
Jentschel M, Köster U, Mutti P, Soldner T, De France G, Ur C and
Urban W (2017), "Identification of excited states and collectivity in 88Se", Physical Review C. Vol. 95(5) |
| Abstract: The γ decays of excited states in the very neutron-rich nucleus Se88 have been observed following the neutron-induced fission of U235. The measurement was performed using the EXILL array of Ge detectors at the PF1B cold-neutron beam facility of the Institut Laue-Langevin, Grenoble. The level scheme of Se88 was established using γ-γ-γ coincidences. A low (21+) energy hints at the onset of quadrupole deformation, and the identification of possible members of a (22+) band provide evidence for γ vibrations. Shell-model calculations using a Ni78 core reproduce the decay scheme well. Equivalent deformation and B(E2) values have previously been predicted for Se88 using pseudo-SU(3), shell-model, and beyond mean-field frameworks implying that interactions between particles in the πf5/2p and νsd orbits are mostly responsible for the collectivity present. © 2017 American Physical Society. |
BibTeX:
@article{Gratchev2017,
author = {Gratchev, I.N. and Simpson, G.S. and Thiamova, G. and Ramdhane, M. and Sieja, K. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Ur, C.A. and Urban, W.},
title = {Identification of excited states and collectivity in Se 88},
journal = {Physical Review C},
year = {2017},
volume = {95},
number = {5},
note = {Cited by: 14},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019038051&doi=10.1103%2fPhysRevC.95.051302&partnerID=40&md5=614faf59640de3ed1a10951f262eb8ae},
doi = {10.1103/PhysRevC.95.051302}
}
|
| Guerrero C, Lerendegui-Marco J, Domingo-Pardo C, Casanovas A,
Dressler R, Halfon S, Heinitz S, Kivel N, Köster U, Paul M,
Quesada-Molina J, Schumann D, Tarifeño-Saldivia A, Tessler M,
Weissman L, Aberle O, Andrzejewski J, Audouin L, Bacak M, Balibrea
J, Barbagallo M, Becvar F, Berthoumieux E, Billowes J, Bosnar D,
Brown A, Caamaño M, Calviño F, Calviani M, Cano-Ott D, Cardella R,
Cerutti F, Chen Y, Chiaveri E, Colonna N, Cortés G, Cortés-Giraldo
M, Cosentino L, Damone L, Diakaki M, Dupont E, Durán I,
Fernández-Domínguez B, Ferrari A, Ferreira P, Finocchiaro P, Göbel
K, García A, Gawlik A, Gilardoni S, Glodariu T, Gonçalves I,
González E, Griesmayer E, Gunsing F, Harada H, Heyse J, Jenkins D,
Jericha E, Käppeler F, Kadi Y, Kalamara A, Kavrigin P, Kimura A,
Kivel N, Kokkoris M, Krticka M, Kurtulgil D, Leal-Cidoncha E,
Lederer C, Leeb H, Lo Meo S, Lonsdale S, Macina D, Marganiec J,
Martínez T, Masi A, Massimi C, Mastinu P, Mastromarco M, Maugeri E,
Mazzone A, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Musumarra A,
Negret A, Nolte R, Oprea A, Patronis N, Pavlik A, Perkowski J,
Porras I, Praena J, Radeck D, Rauscher T, Reifarth R, Rout P, Rubbia
C, Ryan J, Sabaté-Gilarte M, Saxena A, Schillebeeckx P, Smith A,
Sosnin N, Stamatopoulos A, Tagliente G, Tain J, Tassan-Got L,
Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A,
Vlachoudis V, Vlastou R, Wallner A, Warren S, Weiss C, Woods P,
Wright T and Ugec P (2017), "Time-of-flight and activation experiments on 147Pm and 171Tm for astrophysics", EPJ Web of Conferences. Vol. 146 |
| Abstract: The neutron capture cross section of several key unstable isotopes acting as branching points in the s-process are crucial for stellar nucleosynthesis studies, but they are very challenging to measure due to the difficult production of sufficient sample material, the high activity of the resulting samples, and the actual (n,γ) measurement, for which high neutron fluxes and effective background rejection capabilities are required. As part of a new program to measure some of these important branching points, radioactive targets of 147Pm and 171Tm have been produced by irradiation of stable isotopes at the ILL high flux reactor. Neutron capture on 146Nd and 170Er at the reactor was followed by beta decay and the resulting matrix was purified via radiochemical separation at PSI. The radioactive targets have been used for time-of-flight measurements at the CERN n-TOF facility using the 19 and 185 m beam lines during 2014 and 2015. The capture cascades were detected using a set of four C6D6 scintillators, allowing to observe the associated neutron capture resonances. The results presented in this work are the first ever determination of the resonance capture cross section of 147Pm and 171Tm. Activation experiments on the same 147Pm and 171Tm targets with a high-intensity 30 keV quasi-Maxwellian flux of neutrons will be performed using the SARAF accelerator and the Liquid-Lithium Target (LiLiT) in order to extract the corresponding Maxwellian Average Cross Section (MACS). The status of these experiments and preliminary results will be presented and discussed as well. © The Authors, published by EDP Sciences, 2017. |
BibTeX:
@conference{Guerrero2017,
author = {Guerrero, C. and Lerendegui-Marco, J. and Domingo-Pardo, C. and Casanovas, A. and Dressler, R. and Halfon, S. and Heinitz, S. and Kivel, N. and Köster, U. and Paul, M. and Quesada-Molina, J.M. and Schumann, D. and Tarifeño-Saldivia, A. and Tessler, M. and Weissman, L. and Aberle, O. and Andrzejewski, J. and Audouin, L. and Bacak, M. and Balibrea, J. and Barbagallo, M. and Becvar, F. and Berthoumieux, E. and Billowes, J. and Bosnar, D. and Brown, A. and Caamaño, M. and Calviño, F. and Calviani, M. and Cano-Ott, D. and Cardella, R. and Cerutti, F. and Chen, Y.H. and Chiaveri, E. and Colonna, N. and Cortés, G. and Cortés-Giraldo, M.A. and Cosentino, L. and Damone, L.A. and Diakaki, M. and Dupont, E. and Durán, I. and Fernández-Domínguez, B. and Ferrari, A. and Ferreira, P. and Finocchiaro, P. and Göbel, K. and García, A.R. and Gawlik, A. and Gilardoni, S. and Glodariu, T. and Gonçalves, I.F. and González, E. and Griesmayer, E. and Gunsing, F. and Harada, H. and Heyse, J. and Jenkins, D.G. and Jericha, E. and Käppeler, F. and Kadi, Y. and Kalamara, A. and Kavrigin, P. and Kimura, A. and Kivel, N. and Kokkoris, M. and Krticka, M. and Kurtulgil, D. and Leal-Cidoncha, E. and Lederer, C. and Leeb, H. and Lo Meo, Sergio and Lonsdale, S.J. and Macina, D. and Marganiec, J. and Martínez, T. and Masi, A. and Massimi, C. and Mastinu, P. and Mastromarco, M. and Maugeri, E.A. and Mazzone, A. and Mendoza, E. and Mengoni, A. and Milazzo, P.M. and Mingrone, F. and Musumarra, A. and Negret, A. and Nolte, R. and Oprea, A. and Patronis, N. and Pavlik, A. and Perkowski, J. and Porras, I. and Praena, J. and Radeck, D. and Rauscher, T. and Reifarth, R. and Rout, P.C. and Rubbia, C. and Ryan, J.A. and Sabaté-Gilarte, M. and Saxena, A. and Schillebeeckx, P. and Smith, A.G. and Sosnin, N.V. and Stamatopoulos, A. and Tagliente, G. and Tain, J.L. and Tassan-Got, L. and Tsinganis, A. and Valenta, S. and Vannini, G. and Variale, V. and Vaz, P. and Ventura, A. and Vlachoudis, V. and Vlastou, R. and Wallner, A. and Warren, S. and Weiss, C. and Woods, P.J. and Wright, T. and Ugec, P.},
editor = {Siegler P. and Mondelaers W. and Plompen A. and Hambsch F.-J. and Schillebeeckx P. and Kopecky S. and Heyse J. and Oberstedt S.},
title = {Time-of-flight and activation experiments on 147Pm and 171Tm for astrophysics},
journal = {EPJ Web of Conferences},
year = {2017},
volume = {146},
note = {Cited by: 2; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85030449871&doi=10.1051%2fepjconf%2f201714601007&partnerID=40&md5=cbbd8f0c468a54c63ad5b5b9f52e495a},
doi = {10.1051/epjconf/201714601007}
}
|
| Jentschel M, Blanc A, De France G, Köster U, Leoni S, Mutti P,
Simpson G, Soldner T, Ur C, Urban W, Ahmed S, Astier A, Augey L,
Back T, Bczyk P, Bajoga A, Balabanski D, Belgya T, Benzoni G,
Bernards C, Biswas D, Bocchi G, Bottoni S, Britton R, Bruyneel B,
Burnett J, Cakirli R, Carroll R, Catford W, Cederwall B, Celikovic
I, Cieplicka-Oryńczak N, Clement E, Cooper N, Crespi F, Csatlos M,
Curien D, Czerwiński M, Danu L, Davies A, Didierjean F, Drouet F,
Duchne G, Ducoin C, Eberhardt K, Erturk S, Fraile L, Gottardo A,
Grente L, Grocutt L, Guerrero C, Guinet D, Hartig A-L, Henrich C,
Ignatov A, Ilieva S, Ivanova D, John B, John R, Jolie J, Kisyov S,
Krticka M, Konstantinopoulos T, Korgul A, Krasznahorkay A, Kröll T,
Kurpeta J, Kuti I, Lalkovski S, Larijani C, Leguillon R, Lica R,
Litaize O, Lozeva R, Magron C, Mancuso C, Martinez ER, Massarczyk R,
Mazzocchi C, Melon B, Mengoni D, Michelagnoli C, Million B, Mokry C,
Mukhopadhyay S, Mulholland K, Nannini A, Napoli D, Olaizola B,
Orlandi R, Patel Z, Paziy V, Petrache C, Pfeiffer M, Pietralla N,
Podolyak Z, Ramdhane M, Redon N, Regan P, Regis J, Regnier D, Oliver
R, Rudigier M, Runke J, Rząca-Urban T, Saed-Samii N, Salsac M,
Scheck M, Schwengner R, Sengele L, Singh P, Smith J, Stezowski O,
Szpak B, Thomas T, Thürauf M, Timar J, Tom A, Tomandl I, Tornyi T,
Townsley C, Tuerler A, Valenta S, Vancraeyenest A, Vandone V, Vanhoy
J, Vedia V, Warr N, Werner V, Wilmsen D, Wilson E, Zerrouki T and
Zielinska M (2017), "EXILL – A high-efficiency, high-resolution setup for γ-spectroscopy at an intense cold neutron beam facility", Journal of Instrumentation. Vol. 12(11) |
| Abstract: In the EXILL campaign a highly efficient array of high purity germanium (HPGe) detectors was operated at the cold neutron beam facility PF1B of the Institut Laue-Langevin (ILL) to carry out nuclear structure studies, via measurements of γ-rays following neutron-induced capture and fission reactions. The setup consisted of a collimation system producing a pencil beam with a thermal capture equivalent flux of about 108 n s-1cm-2 at the target position and negligible neutron halo. The target was surrounded by an array of eight to ten anti-Compton shielded EXOGAM Clover detectors, four to six anti-Compton shielded large coaxial GASP detectors and two standard Clover detectors. For a part of the campaign the array was combined with 16 LaBr3:(Ce) detectors from the FATIMA collaboration. The detectors were arranged in an array of rhombicuboctahedron geometry, providing the possibility to carry out very precise angular correlation and directional-polarization correlation measurements. The triggerless acquisition system allowed a signal collection rate of up to 6 × 105 Hz. The data allowed to set multi-fold coincidences to obtain decay schemes and in combination with the FATIMA array of LaBr3:(Ce) detectors to analyze half-lives of excited levels in the pico- to microsecond range. Precise energy and efficiency calibrations of EXILL were performed using standard calibration sources of 133Ba, 60Co and 152Eu as well as data from the reactions 27Al(n,γ)28Al and 35Cl(n,γ)36Cl in the energy range from 30 keV up to 10 MeV. © 2017 The Author(s). |
BibTeX:
@article{Jentschel2017,
author = {Jentschel, M. and Blanc, A. and De France, G. and Köster, U. and Leoni, S. and Mutti, P. and Simpson, G. and Soldner, T. and Ur, C. and Urban, W. and Ahmed, S. and Astier, A. and Augey, L. and Back, T. and Bczyk, P. and Bajoga, A. and Balabanski, D. and Belgya, T. and Benzoni, G. and Bernards, C. and Biswas, D.C. and Bocchi, G. and Bottoni, S. and Britton, R. and Bruyneel, B. and Burnett, J. and Cakirli, R.B. and Carroll, R. and Catford, W. and Cederwall, B. and Celikovic, I. and Cieplicka-Oryńczak, N. and Clement, E. and Cooper, N. and Crespi, F. and Csatlos, M. and Curien, D. and Czerwiński, M. and Danu, L.S. and Davies, A. and Didierjean, F. and Drouet, F. and Duchne, G. and Ducoin, C. and Eberhardt, K. and Erturk, S. and Fraile, L.M. and Gottardo, A. and Grente, L. and Grocutt, L. and Guerrero, C. and Guinet, D. and Hartig, A.-L. and Henrich, C. and Ignatov, A. and Ilieva, S. and Ivanova, D. and John, B.V. and John, R. and Jolie, J. and Kisyov, S. and Krticka, M. and Konstantinopoulos, T. and Korgul, A. and Krasznahorkay, A. and Kröll, T. and Kurpeta, J. and Kuti, I. and Lalkovski, S. and Larijani, C. and Leguillon, R. and Lica, R. and Litaize, O. and Lozeva, R. and Magron, C. and Mancuso, C. and Martinez, E. Ruiz and Massarczyk, R. and Mazzocchi, C. and Melon, B. and Mengoni, D. and Michelagnoli, C. and Million, B. and Mokry, C. and Mukhopadhyay, S. and Mulholland, K. and Nannini, A. and Napoli, D.R. and Olaizola, B. and Orlandi, R. and Patel, Z. and Paziy, V. and Petrache, C. and Pfeiffer, M. and Pietralla, N. and Podolyak, Z. and Ramdhane, M. and Redon, N. and Regan, P. and Regis, J.M. and Regnier, D. and Oliver, R.J. and Rudigier, M. and Runke, J. and Rząca-Urban, T. and Saed-Samii, N. and Salsac, M.D. and Scheck, M. and Schwengner, R. and Sengele, L. and Singh, P. and Smith, J. and Stezowski, O. and Szpak, B. and Thomas, T. and Thürauf, M. and Timar, J. and Tom, A. and Tomandl, I. and Tornyi, T. and Townsley, C. and Tuerler, A. and Valenta, S. and Vancraeyenest, A. and Vandone, V. and Vanhoy, J. and Vedia, V. and Warr, N. and Werner, V. and Wilmsen, D. and Wilson, E. and Zerrouki, T. and Zielinska, M.},
title = {EXILL - A high-efficiency, high-resolution setup for γ-spectroscopy at an intense cold neutron beam facility},
journal = {Journal of Instrumentation},
year = {2017},
volume = {12},
number = {11},
note = {Cited by: 32; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038559062&doi=10.1088%2f1748-0221%2f12%2f11%2fP11003&partnerID=40&md5=24114a9c22876992416de208dc0fdff6},
doi = {10.1088/1748-0221/12/11/P11003}
}
|
| Licǎ R, Benzoni G, Morales A, Borge M, Fraile L, Mach H, Madurga
M, Sotty C, Vedia V, De Witte H, Benito J, Berry T, Blasi N, Bracco
A, Camera F, Ceruti S, Charviakova V, Cieplicka-Oryńczak N, Costache
C, Crespi F, Creswell J, Fernández-Martínez G, Fynbo H, Greenlees P,
Homm I, Huyse M, Jolie J, Karayonchev V, Köster U, Konki J, Kröll T,
Kurcewicz J, Kurtukian-Nieto T, Lazarus I, Leoni S, Lund M,
Marginean N, Marginean R, Mihai C, Mihai R, Negret A, Orduz A, Patyk
Z, Pascu S, Pucknell V, Rahkila P, Regis J, Rotaru F, Saed-Sami N,
Sánchez-Tembleque V, Stanoiu M, Tengblad O, Thuerauf M, Turturica A,
Van Duppen P and Warr N (2017), "β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station", Journal of Physics G: Nuclear and Particle Physics. Vol. 44(5) |
| Abstract: Neutron-rich Ba isotopes are expected to exhibit octupolar correlations, reaching their maximum in isotopes around mass A = 146. The odd-A neutron-rich members of this isotopic chain show typical patterns related to non-axially symmetric shapes, which are however less marked compared to even-A ones, pointing to a major contribution from vibrations. In the present paper we present results from a recent study focused on 148-150Cs β-decay performed at the ISOLDE Decay Station equipped with fast-timing detectors. A detailed analysis of the measured decay half-lives and decay scheme of 149Ba is presented, giving a first insight in the structure of this neutron-rich nucleus. © 2017 IOP Publishing Ltd. |
BibTeX:
@article{Licǎ2017,
author = {Licǎ, R. and Benzoni, G. and Morales, A.I. and Borge, M.J.G. and Fraile, L.M. and Mach, H. and Madurga, M. and Sotty, C. and Vedia, V. and De Witte, H. and Benito, J. and Berry, T. and Blasi, N. and Bracco, A. and Camera, F. and Ceruti, S. and Charviakova, V. and Cieplicka-Oryńczak, N. and Costache, C. and Crespi, F.C.L. and Creswell, J. and Fernández-Martínez, G. and Fynbo, H. and Greenlees, P. and Homm, I. and Huyse, M. and Jolie, J. and Karayonchev, V. and Köster, U. and Konki, J. and Kröll, T. and Kurcewicz, J. and Kurtukian-Nieto, T. and Lazarus, I. and Leoni, S. and Lund, M. and Marginean, N. and Marginean, R. and Mihai, C. and Mihai, R. and Negret, A. and Orduz, A. and Patyk, Z. and Pascu, S. and Pucknell, V. and Rahkila, P. and Regis, J.M. and Rotaru, F. and Saed-Sami, N. and Sánchez-Tembleque, V. and Stanoiu, M. and Tengblad, O. and Thuerauf, M. and Turturica, A. and Van Duppen, P. and Warr, N.},
title = {β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station},
journal = {Journal of Physics G: Nuclear and Particle Physics},
year = {2017},
volume = {44},
number = {5},
note = {Cited by: 12; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018493091&doi=10.1088%2f1361-6471%2faa6015&partnerID=40&md5=0662974640c88e48b833b481effe5e00},
doi = {10.1088/1361-6471/aa6015}
}
|
| Materna T, Rapał M, Letourneau A, Marchix A, Litaize O, Sérot O,
Urban W, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson
G, Ur CA and France GD (2017), "Study of fission fragment de-excitation by gamma-ray spectrometry with the EXILL experiment", EPJ Web of Conferences. Vol. 146 |
| Abstract: A large array of Ge detectors installed at ILL, around a 235U target irradiated with cold neutrons, (EXILL) allowed measurement of prompt gamma-ray cascades occurring in fission fragments with an unambiguous determination of fragments. Here we present preliminary results of a systematic comparison between experimental γ-ray intensities and those obtained from the Monte-Carlo simulation code FIFRELIN, which is dedicated to the de-excitation of fission fragments. Major γ-ray intensities in the 142Ba and 92Kr fission products, extracted from EXILL data, were compared to FIFRELIN, as well as to reported values (when available) obtained with EUROGAM2 in the spontaneous fission of 248Cm. The evolution of γ-ray intensities in 92Kr versus the complementary partner in fission (i.e. versus the total number of evaporated neutrons by the fission pair) was then extracted and compared to FIFRELIN. © The Authors, published by EDP Sciences, 2017. |
BibTeX:
@conference{Materna2017,
author = {Materna, Thomas and Rapał, Michal and Letourneau, Alain and Marchix, Anthony and Litaize, Olivier and Sérot, Olivier and Urban, Waldemar and Blanc, Aurélien and Jentschel, Michael and Köster, Ulli and Mutti, Paolo and Soldner, Torsten and Simpson, Gary and Ur, Calin A. and France, Gilles De},
editor = {Siegler P. and Mondelaers W. and Plompen A. and Hambsch F.-J. and Schillebeeckx P. and Kopecky S. and Heyse J. and Oberstedt S.},
title = {Study of fission fragment de-excitation by gamma-ray spectrometry with the EXILL experiment},
journal = {EPJ Web of Conferences},
year = {2017},
volume = {146},
note = {Cited by: 3; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85030454299&doi=10.1051%2fepjconf%2f201714604041&partnerID=40&md5=575c7e5fd8a25dc40de68e6db0573a35},
doi = {10.1051/epjconf/201714604041}
}
|
| Olaizola B, Fraile L, Mach H, Poves A, Aprahamian A, Briz J,
Cal-González J, Ghiţa D, Köster U, Kurcewicz W, Lesher S, Pauwels D,
Picado E, Radulov D, Simpson G and Udías J (2017), "Beta decay of 66Mn to the N = 40 nucleus 66Fe", Journal of Physics G: Nuclear and Particle Physics. Vol. 44(12) |
| Abstract: The low energy structure of 66Fe was studied by means of γ- and fast-timing spectroscopy at the ISOLDE/CERN facility. The level scheme of 66Fe populated following the β- decay of 66Mn was established. It confirms and further expands the level scheme from recent publications. The β-delayed neutron emission branch was measured and γ rays in 65Fe were observed following the β-n decay for the first time. The half lives of the 21+ state and four other states of 66Fe were measured using the advanced time-delayed βγγ(t) method. These results are compared with large-scale shell-model calculations based on the Lenzi-Nowacki-Poves-Sieja interaction. The β-decay of 66Mn to 66Fe has been calculated as well, and log(ft) values derived. Spin and parity assignments are proposed based on the experimental information and the new calculations. © 2017 IOP Publishing Ltd. |
BibTeX:
@article{Olaizola2017,
author = {Olaizola, B. and Fraile, L.M. and Mach, H. and Poves, A. and Aprahamian, A. and Briz, J.A. and Cal-González, J. and Ghiţa, D. and Köster, U. and Kurcewicz, W. and Lesher, S.R. and Pauwels, D. and Picado, E. and Radulov, D. and Simpson, G.S. and Udías, J.M.},
title = {Beta decay of 66Mn to the N = 40 nucleus 66Fe},
journal = {Journal of Physics G: Nuclear and Particle Physics},
year = {2017},
volume = {44},
number = {12},
note = {Cited by: 4},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034662915&doi=10.1088%2f1361-6471%2faa915e&partnerID=40&md5=46c3da7f31f48489c3a6f640048148c9},
doi = {10.1088/1361-6471/aa915e}
}
|
| Olaizola B, Fraile L, Mach H, Poves A, Nowacki F, Aprahamian A,
Briz J, Cal-González J, Ghiţa D, Köster U, Kurcewicz W, Lesher S,
Pauwels D, Picado E, Radulov D, Simpson G and Udías J (2017), "Search for shape-coexisting 0+ states in Ni 66 from lifetime measurements", Physical Review C. Vol. 95(6) |
| Abstract: The lifetime of the 03+ state in Ni66, two neutrons below the N=40 subshell gap, has been measured. The transition B(E2;03+→21+) is one of the most hindered E2 transitions in the Ni isotopic chain and it implies that, unlike Ni68, there is a spherical structure at low excitation energy. We have performed extensive shell-model calculations that correctly predict this result, obtaining a spherical 0+ state at the correct energy and with an extremely low B(E2;03+→21+) value. © 2017 American Physical Society. |
BibTeX:
@article{Olaizola2017,
author = {Olaizola, B. and Fraile, L.M. and Mach, H. and Poves, A. and Nowacki, F. and Aprahamian, A. and Briz, J.A. and Cal-González, J. and Ghiţa, D. and Köster, U. and Kurcewicz, W. and Lesher, S.R. and Pauwels, D. and Picado, E. and Radulov, D. and Simpson, G.S. and Udías, J.M.},
title = {Search for shape-coexisting 0+ states in Ni 66 from lifetime measurements},
journal = {Physical Review C},
year = {2017},
volume = {95},
number = {6},
note = {Cited by: 16; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020751297&doi=10.1103%2fPhysRevC.95.061303&partnerID=40&md5=479900ee9c6fdc639d45f6d57017ea30},
doi = {10.1103/PhysRevC.95.061303}
}
|
| Rapisarda E, Andreyev A, Antalic S, Barzakh A, Cocolios T, Darby
I, De Groote R, De Witte H, Diriken J, Elseviers J, Fedorov D,
Fedosseev V, Ferrer R, Huyse M, Kalaninová Z, Köster U, Lane J,
Liberati V, Lynch K, Marsh B, Molkanov P, Pauwels D, Procter T,
Radulov D, Sandhu K, Seliverstov M, Van Beveren C, Van Den Bergh P,
Van Duppen P, Venhart M, Veselský M and Wrzosek-Lipska K (2017), "Shape coexistence studied in 182,184Hg via the β decay of 182,184Tl", Journal of Physics G: Nuclear and Particle Physics. Vol. 44(7) |
| Abstract: The β+/EC decay of 182,184Tl to excited states in the daughter nuclei 182,184Hg has been investigated at the CERN on-line isotope mass separator facility. In both Tl nuclei two β-decaying states were observed. In the case of 184Tl, narrow-band laser spectroscopy could be used to disentangle the decay of both isomers. In 182Hg a precise energy of 335 (1) keV for the 0+ 2 state was measured together with its feeding from a tentatively proposed 2+ 3 state at 973 keV. Large conversion coefficients for the 2+ + 21 → 2 transition in 182,184Hg were measured to be 7.2 (13) and 14.2 (36), respectively, evidencing a strong E0 component. © 2017 IOP Publishing Ltd Printed in the UK. |
BibTeX:
@article{Rapisarda2017,
author = {Rapisarda, E. and Andreyev, A.N. and Antalic, S. and Barzakh, A. and Cocolios, T.E. and Darby, I.G. and De Groote, R. and De Witte, H.D. and Diriken, J. and Elseviers, J. and Fedorov, D. and Fedosseev, V.N. and Ferrer, R. and Huyse, M. and Kalaninová, Z. and Köster, U. and Lane, J. and Liberati, V. and Lynch, K.M. and Marsh, B.A. and Molkanov, P.L. and Pauwels, D. and Procter, T.J. and Radulov, D. and Sandhu, K. and Seliverstov, M.D. and Van Beveren, C. and Van Den Bergh, P. and Van Duppen, P. and Venhart, M. and Veselský, M. and Wrzosek-Lipska, K.},
title = {Shape coexistence studied in 182,184Hg via the β decay of 182,184Tl},
journal = {Journal of Physics G: Nuclear and Particle Physics},
year = {2017},
volume = {44},
number = {7},
note = {Cited by: 13; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021291946&doi=10.1088%2f1361-6471%2faa6bb6&partnerID=40&md5=a045f26827e17800086c1409a18f0065},
doi = {10.1088/1361-6471/aa6bb6}
}
|
| Régis J-M, Jolie J, Saed-Samii N, Warr N, Pfeiffer M, Blanc A,
Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, Drouet F,
Vancraeyenest A, De France G, Clément E, Stezowski O, Ur C, Urban W,
Regan P, Podolyák Z, Larijani C, Townsley C, Carroll R, Wilson E,
Fraile L, Mach H, Paziy V, Olaizola B, Vedia V, Bruce A, Roberts O,
Smith J, Scheck M, Kröll T, Hartig A-L, Ignatov A, Ilieva S,
Lalkovski S, Korten W, Mǎrginean N, Otsuka T, Shimizu N, Togashi T
and Tsunoda Y (2017), "Abrupt shape transition at neutron number N = 60: B(E2) values in 94,96,98Sr from fast γ-γ Timing", Physical Review C. Vol. 95(5) |
| Abstract: Lifetimes of low-lying yrast states in neutron-rich Sr94,96,98 have been measured by Germanium-gated γ-γ fast timing with LaBr3(Ce) detectors using the EXILL&FATIMA spectrometer at the Institut Laue-Langevin. Sr fission products were generated using cold-neutron-induced fission of U235 and stopped almost instantaneously within the thick target. The experimental B(E2) values are compared with results of Monte Carlo shell-model calculations made without truncation on the occupation numbers of the orbits spanned by eight proton and eight neutron orbits and show good agreement. Similarly to the Zr isotopes, the abrupt shape transition in the Sr isotopes near neutron number N=60 is identified as being caused by many-proton excitations to its g9/2 orbit. © 2017 American Physical Society. |
BibTeX:
@article{Régis2017,
author = {Régis, J.-M. and Jolie, J. and Saed-Samii, N. and Warr, N. and Pfeiffer, M. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G.S. and Drouet, F. and Vancraeyenest, A. and De France, G. and Clément, E. and Stezowski, O. and Ur, C.A. and Urban, W. and Regan, P.H. and Podolyák, Zs. and Larijani, C. and Townsley, C. and Carroll, R. and Wilson, E. and Fraile, L.M. and Mach, H. and Paziy, V. and Olaizola, B. and Vedia, V. and Bruce, A.M. and Roberts, O.J. and Smith, J.F. and Scheck, M. and Kröll, T. and Hartig, A.-L. and Ignatov, A. and Ilieva, S. and Lalkovski, S. and Korten, W. and Mǎrginean, N. and Otsuka, T. and Shimizu, N. and Togashi, T. and Tsunoda, Y.},
title = {Abrupt shape transition at neutron number N=60: B(E2) values in Sr 94,96,98 from fast γ-γ Timing},
journal = {Physical Review C},
year = {2017},
volume = {95},
number = {5},
note = {Cited by: 33; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019548518&doi=10.1103%2fPhysRevC.95.054319&partnerID=40&md5=e7ea33ef77321b5743eb1fecf4198232},
doi = {10.1103/PhysRevC.95.054319}
}
|
| Rząca-Urban T, Sieja K, Urban W, Czerwiński M, Blanc A, Jentschel
M, Mutti P, Köster U, Soldner T, De France G, Simpson G and Ur C
(2017), "Structure of 90,91Kr nuclei: Solving the puzzle of their population in fission", Physical Review C. Vol. 95(6) |
| Abstract: Excited states of Kr90,91 nuclei have been populated following the cold-neutron-induced fission of a U235 target. The γ rays emitted following fission reactions were measured using the highly efficient array of high-purity Ge detectors, EXILL, at the Institute-Laue-Langevin, Grenoble. The surprisingly low population of Kr91 reported in the spontaneous fission of Cf252 measurement has been explained and new level schemes of Kr90,91 nuclei were established. Moderate γ collectivity is observed in both nuclei. Large-scale shell-model calculations support the experimental picture of the Z=36, Kr isotopes forming a border line between lower-Z nuclei showing moderate γ collectivity and the heavier-Z nuclei, where distinct shape changes are observed. © 2017 American Physical Society. |
BibTeX:
@article{Rzaca-Urban2017,
author = {Rzaca-Urban, T. and Sieja, K. and Urban, W. and Czerwiński, M. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Structure of Kr 90,91 nuclei: Solving the puzzle of their population in fission},
journal = {Physical Review C},
year = {2017},
volume = {95},
number = {6},
note = {Cited by: 11},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020189980&doi=10.1103%2fPhysRevC.95.064302&partnerID=40&md5=8483bb9432f9debe2359fb065f4c1c23},
doi = {10.1103/PhysRevC.95.064302}
}
|
| Spagnoletti P, Simpson G, Carroll R, Régis J-M, Blanc A, Jentschel
M, Köster U, Mutti P, Soldner T, De France G, Ur C, Urban W, Bruce
A, Drouet F, Fraile L, Gaffney L, Ghitǎ D, Ilieva S, Jolie J, Korten
W, Kröll T, Larijani C, Lalkovski S, Licǎ R, Mach H, Mǎrginean N,
Paziy V, Podolyák Z, Regan P, Scheck M, Saed-Samii N, Thiamova G,
Townsley C, Vancraeyenest A, Vedia V, Gargano A and Van Isacker P
(2017), "Half-life of the 15/2+ state of 135I: A test of E2 seniority relations", Physical Review C. Vol. 95(2) |
| Abstract: The half-life of the 15/21+ state of the 3-valence-proton nucleus I135 has been measured to be 1.74(8) ns using the EXILL-FATIMA mixed array of Ge and LaBr3 detectors. The nuclei were produced following the cold neutron-induced fission of a U235 target at the PF1B beam line of the Institut Laue-Langevin. The extracted B(E2;15/2+→11/2+) value enabled a test of seniority relations for the first time between E2 transition rates. Large-scale shell-model calculations were performed for Te134 and I135, and reinterpreted in a single-orbit approach. The results show that the two-body component of the E2 operator can be large whereas energy shifts due to the three-body component of the effective interaction are small. © 2017 American Physical Society. |
BibTeX:
@article{Spagnoletti2017,
author = {Spagnoletti, P. and Simpson, G.S. and Carroll, R. and Régis, J.-M. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Ur, C.A. and Urban, W. and Bruce, A.M. and Drouet, F. and Fraile, L.M. and Gaffney, L.P. and Ghitǎ, D.G. and Ilieva, S. and Jolie, J. and Korten, W. and Kröll, T. and Larijani, C. and Lalkovski, S. and Licǎ, R. and Mach, H. and Mǎrginean, N. and Paziy, V. and Podolyák, Zs. and Regan, P.H. and Scheck, M. and Saed-Samii, N. and Thiamova, G. and Townsley, C. and Vancraeyenest, A. and Vedia, V. and Gargano, A. and Van Isacker, P.},
title = {Half-life of the 15/2+ state of i 135: A test of E2 seniority relations},
journal = {Physical Review C},
year = {2017},
volume = {95},
number = {2},
note = {Cited by: 9; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015624857&doi=10.1103%2fPhysRevC.95.021302&partnerID=40&md5=c3066e708b20961d10cc6f740f1a491c},
doi = {10.1103/PhysRevC.95.021302}
}
|
| Urban W, Czerwiński M, Kurpeta J, Rząca-Urban T, Wiśniewski J,
Materna T, Iskra Ł, Smith A, Ahmad I, Blanc A, Faust H, Köster U,
Jentschel M, Mutti P, Soldner T, Simpson G, Pinston J, De France G,
Ur C, Elomaa V-V, Eronen T, Hakala J, Jokinen A, Kankainen A, Moore
I, Rissanen J, Saastamoinen A, Szerypo J, Weber C and Äystö J
(2017), "Shape coexistence in the odd-odd nucleus 98Y: The role of the g9/2 neutron extruder", Physical Review C. Vol. 96(4) |
| Abstract: Excited states in Y98, populated in neutron-induced fission of U235 and in spontaneous fission of Cm248 and Cf252, have been studied by means of γ spectroscopy using the Lohengrin fission-fragment separator at ILL Grenoble and the EXILL, Eurogam2, and Gammasphere Ge arrays. Two new isomers have been found in Y98: a deformed one with T1/2=180(7) ns and a rotational band on top of it, and a spherical one with T1/2=0.45(15)μs, analogous to the 8+ isomer in Y96, corresponding to the (νg7/2,πg9/2)8+ spherical configuration. Using the JYFLTRAP Penning trap, an accurate excitation energy of 465.7(7) keV has been determined for the 2.36-s isomer in Y98. This result and the studies of excited levels in Zr98, populated in β- decay of the isomer, indicate a new spin-parity, Iπ=(7)+ for the isomer. The high spin and the decay properties of this isomer suggest the presence of the 9/2+[404] neutron extruder orbital in its structure. This is consistent with the large deformation of the isomer, reported recently. The present work does not provide arguments to support the special role of the νg7/2-πg9/2 interaction (the spin-orbit-partner, or SOP, mechanism). © 2017 American Physical Society. |
BibTeX:
@article{Urban2017,
author = {Urban, W. and Czerwiński, M. and Kurpeta, J. and Rząca-Urban, T. and Wiśniewski, J. and Materna, T. and Iskra, Ł.W. and Smith, A.G. and Ahmad, I. and Blanc, A. and Faust, H. and Köster, U. and Jentschel, M. and Mutti, P. and Soldner, T. and Simpson, G.S. and Pinston, J.A. and De France, G. and Ur, C.A. and Elomaa, V.-V. and Eronen, T. and Hakala, J. and Jokinen, A. and Kankainen, A. and Moore, I.D. and Rissanen, J. and Saastamoinen, A. and Szerypo, J. and Weber, C. and Äystö, J.},
title = {Shape coexistence in the odd-odd nucleus y 98: The role of the g9/2 neutron extruder},
journal = {Physical Review C},
year = {2017},
volume = {96},
number = {4},
note = {Cited by: 13; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85032572856&doi=10.1103%2fPhysRevC.96.044333&partnerID=40&md5=566c685fd646e8f061dd418c90421746},
doi = {10.1103/PhysRevC.96.044333}
}
|
| Vedia V, Paziy V, Fraile L, Mach H, Walters W, Aprahamian A,
Bernards C, Briz J, Bucher B, Chiara C, Dlouhý Z, Gheorghe I, Ghiţǎ
D, Hoff P, Jolie J, Köster U, Kurcewicz W, Licǎ R, Mǎrginean N,
Mǎrginean R, Olaizola B, Régis J-M, Rudigier M, Sava T, Simpson G,
Stǎnoiu M and Stroe L (2017), "Search for the 73Ga ground-state doublet splitting in the β decay of 73Zn", Physical Review C. Vol. 96(3) |
| Abstract: The existence of two close-lying nuclear states in Ga73 has recently been experimentally determined: a 1/2- spin-parity for the ground state was measured in a laser spectroscopy experiment, while a Jπ=3/2- level was observed in transfer reactions. This scenario is supported by Coulomb excitation studies, which set a limit for the energy splitting of 0.8 keV. In this work, we report on the study of the excited structure of Ga73 populated in the β decay of Zn73 produced at ISOLDE, CERN. Using β-gated, γ-ray singles, and γ-γ coincidences, we have searched for energy differences to try to delimit the ground-state energy splitting, providing a more stringent energy difference limit. Three new half-lives of excited states in Ga73 have been measured using the fast-timing method with LaBr3(Ce) detectors. From our study, we help clarify the excited structure of Ga73 and we extend the existing Zn73 decay to Ga73 with 8 new energy levels and 35 γ transitions. We observe a 195-keV transition consistent with a γ ray de-exciting a short-lived state in the β-decay parent Zn73. © 2017 American Physical Society. |
BibTeX:
@article{Vedia2017,
author = {Vedia, V. and Paziy, V. and Fraile, L.M. and Mach, H. and Walters, W.B. and Aprahamian, A. and Bernards, C. and Briz, J.A. and Bucher, B. and Chiara, C.J. and Dlouhý, Z. and Gheorghe, I. and Ghiţǎ, D. and Hoff, P. and Jolie, J. and Köster, U. and Kurcewicz, W. and Licǎ, R. and Mǎrginean, N. and Mǎrginean, R. and Olaizola, B. and Régis, J.-M. and Rudigier, M. and Sava, T. and Simpson, G.S. and Stǎnoiu, M. and Stroe, L.},
title = {Search for the Ga 73 ground-state doublet splitting in the β decay of Zn 73},
journal = {Physical Review C},
year = {2017},
volume = {96},
number = {3},
note = {Cited by: 5; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029897672&doi=10.1103%2fPhysRevC.96.034311&partnerID=40&md5=5ef215cdedc35c4ae9d37e2719126215},
doi = {10.1103/PhysRevC.96.034311}
}
|
| Vogt A, Birkenbach B, Reiter P, Blazhev A, Siciliano M,
Hadyńska-Klȩk K, Valiente-Dobón J, Wheldon C, Teruya E, Yoshinaga N,
Arnswald K, Bazzacco D, Bowry M, Bracco A, Bruyneel B, Chakrawarthy
R, Chapman R, Cline D, Corradi L, Crespi F, Cromaz M, De Angelis G,
Eberth J, Fallon P, Farnea E, Fioretto E, Freeman S, Fu B, Gadea A,
Geibel K, Gelletly W, Gengelbach A, Giaz A, Görgen A, Gottardo A,
Hayes A, Hess H, Hirsch R, Hua H, John P, Jolie J, Jungclaus A, Kaya
L, Korten W, Lee I, Leoni S, Lewandowski L, Liang X, Lunardi S,
Macchiavelli A, Menegazzo R, Mengoni D, Michelagnoli C, Mijatović T,
Montagnoli G, Montanari D, Müller-Gatermann C, Napoli D, Pearson C,
Pellegri L, Podolyák Z, Pollarolo G, Pullia A, Queiser M, Radeck F,
Recchia F, Regan P, Rosiak D, Saed-Samii N, Şahin E, Scarlassara F,
Schneiders D, Seidlitz M, Siebeck B, Sletten G, Smith J, Söderström
P-A, Stefanini A, Steinbach T, Stezowski O, Szilner S, Szpak B, Teng
R, Ur C, Vandone V, Warner D, Wiens A, Wu C and Zell K (2017), "Isomers and high-spin structures in the N = 81 isotones 135Xe and 137Ba", Physical Review C. Vol. 95(2) |
| Abstract: The high-spin structures and isomers of the N=81 isotones Xe135 and Ba137 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+U238 and (ii) Xe136+Pb208 MNT reactions employing the high-resolution Advanced Gamma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (iii) in the Xe136+Pt198 MNT reaction employing the γ-ray array GAMMASPHERE in combination with the gas-detector array CHICO, and (iv) via a B11+Te130 fusion-evaporation reaction with the HORUS γ-ray array at the University of Cologne. The high-spin level schemesof Xe135 and Ba137 are considerably extended to higher energies. The 2058-keV (19/2-) state in Xe135 is identified as an isomer, closing a gap in the systematics along the N=81 isotones. Its half-life is measured to be 9.0(9) ns, corresponding to a reduced transition probability of B(E2,19/2-→15/2-)=0.52(6) W.u. The experimentally deduced reduced transition probabilities of the isomeric states are compared to shell-model predictions. Latest shell-model calculations reproduce the experimental findings generally well and provide guidance to the interpretation of the new levels. © 2017 American Physical Society. |
BibTeX:
@article{Vogt2017,
author = {Vogt, A. and Birkenbach, B. and Reiter, P. and Blazhev, A. and Siciliano, M. and Hadyńska-Klȩk, K. and Valiente-Dobón, J.J. and Wheldon, C. and Teruya, E. and Yoshinaga, N. and Arnswald, K. and Bazzacco, D. and Bowry, M. and Bracco, A. and Bruyneel, B. and Chakrawarthy, R.S. and Chapman, R. and Cline, D. and Corradi, L. and Crespi, F.C.L. and Cromaz, M. and De Angelis, G. and Eberth, J. and Fallon, P. and Farnea, E. and Fioretto, E. and Freeman, S.J. and Fu, B. and Gadea, A. and Geibel, K. and Gelletly, W. and Gengelbach, A. and Giaz, A. and Görgen, A. and Gottardo, A. and Hayes, A.B. and Hess, H. and Hirsch, R. and Hua, H. and John, P.R. and Jolie, J. and Jungclaus, A. and Kaya, L. and Korten, W. and Lee, I.Y. and Leoni, S. and Lewandowski, L. and Liang, X. and Lunardi, S. and Macchiavelli, A.O. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Montagnoli, G. and Montanari, D. and Müller-Gatermann, C. and Napoli, D. and Pearson, C.J. and Pellegri, L. and Podolyák, Zs. and Pollarolo, G. and Pullia, A. and Queiser, M. and Radeck, F. and Recchia, F. and Regan, P.H. and Rosiak, D. and Saed-Samii, N. and Şahin, E. and Scarlassara, F. and Schneiders, D. and Seidlitz, M. and Siebeck, B. and Sletten, G. and Smith, J.F. and Söderström, P.-A. and Stefanini, A.M. and Steinbach, T. and Stezowski, O. and Szilner, S. and Szpak, B. and Teng, R. and Ur, C. and Vandone, V. and Warner, D.D. and Wiens, A. and Wu, C.Y. and Zell, K.O.},
title = {Isomers and high-spin structures in the N=81 isotones Xe 135 and Ba 137},
journal = {Physical Review C},
year = {2017},
volume = {95},
number = {2},
note = {Cited by: 10; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015609952&doi=10.1103%2fPhysRevC.95.024316&partnerID=40&md5=899194e0b108264b447580d69287c873},
doi = {10.1103/PhysRevC.95.024316}
}
|
| Vogt A, Siciliano M, Birkenbach B, Reiter P, Hadyńska-Klȩk K,
Wheldon C, Valiente-Dobón J, Teruya E, Yoshinaga N, Arnswald K,
Bazzacco D, Blazhev A, Bracco A, Bruyneel B, Chakrawarthy R, Chapman
R, Cline D, Corradi L, Crespi F, Cromaz M, De Angelis G, Eberth J,
Fallon P, Farnea E, Fioretto E, Fransen C, Freeman S, Fu B, Gadea A,
Gelletly W, Giaz A, Görgen A, Gottardo A, Hayes A, Hess H,
Hetzenegger R, Hirsch R, Hua H, John P, Jolie J, Jungclaus A,
Karayonchev V, Kaya L, Korten W, Lee I, Leoni S, Liang X, Lunardi S,
MacChiavelli A, Menegazzo R, Mengoni D, Michelagnoli C, Mijatović T,
Montagnoli G, Montanari D, Müller-Gatermann C, Napoli D, Pearson C,
Podolyák Z, Pollarolo G, Pullia A, Queiser M, Recchia F, Regan P,
Régis J-M, Saed-Samii N, Şahin E, Scarlassara F, Seidlitz M, Siebeck
B, Sletten G, Smith J, Söderström P-A, Stefanini A, Stezowski O,
Szilner S, Szpak B, Teng R, Ur C, Warner D, Wolf K, Wu C and Zell K
(2017), "High-spin structures in 132Xe and 133Xe and evidence for isomers along the N = 79 isotones", Physical Review C. Vol. 96(2) |
| Abstract: The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134-xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7-) and (10+) isomers in Xe132 and above the 11/2- isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2â‰1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features. © 2017 American Physical Society. uk. |
BibTeX:
@article{Vogt2017,
author = {Vogt, A. and Siciliano, M. and Birkenbach, B. and Reiter, P. and Hadyńska-Klȩk, K. and Wheldon, C. and Valiente-Dobón, J.J. and Teruya, E. and Yoshinaga, N. and Arnswald, K. and Bazzacco, D. and Blazhev, A. and Bracco, A. and Bruyneel, B. and Chakrawarthy, R.S. and Chapman, R. and Cline, D. and Corradi, L. and Crespi, F.C.L. and Cromaz, M. and De Angelis, G. and Eberth, J. and Fallon, P. and Farnea, E. and Fioretto, E. and Fransen, C. and Freeman, S.J. and Fu, B. and Gadea, A. and Gelletly, W. and Giaz, A. and Görgen, A. and Gottardo, A. and Hayes, A.B. and Hess, H. and Hetzenegger, R. and Hirsch, R. and Hua, H. and John, P.R. and Jolie, J. and Jungclaus, A. and Karayonchev, V. and Kaya, L. and Korten, W. and Lee, I.Y. and Leoni, S. and Liang, X. and Lunardi, S. and MacChiavelli, A.O. and Menegazzo, R. and Mengoni, D. and Michelagnoli, C. and Mijatović, T. and Montagnoli, G. and Montanari, D. and Müller-Gatermann, C. and Napoli, D. and Pearson, C.J. and Podolyák, Zs. and Pollarolo, G. and Pullia, A. and Queiser, M. and Recchia, F. and Regan, P.H. and Régis, J.-M. and Saed-Samii, N. and Şahin, E. and Scarlassara, F. and Seidlitz, M. and Siebeck, B. and Sletten, G. and Smith, J.F. and Söderström, P.-A. and Stefanini, A.M. and Stezowski, O. and Szilner, S. and Szpak, B. and Teng, R. and Ur, C. and Warner, D.D. and Wolf, K. and Wu, C.Y. and Zell, K.O.},
title = {High-spin structures in Xe 132 and Xe 133 and evidence for isomers along the N=79 isotones},
journal = {Physical Review C},
year = {2017},
volume = {96},
number = {2},
note = {Cited by: 13; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028776828&doi=10.1103%2fPhysRevC.96.024321&partnerID=40&md5=96275dc5b811776f6e815f05804e4107},
doi = {10.1103/PhysRevC.96.024321}
}
|
| Wiśniewski J, Urban W, Rząca-Urban T, Smith A, Smith J, Simpson G,
Ahmad I and Greene J (2017), "Parity-doublet structure in the 14757La90 nucleus", Physical Review C. Vol. 96(6) |
| Abstract: Excited states in La147, populated in spontaneous fission of Cf252, have been reinvestigated by means of γ-ray spectroscopy, using high-fold γ-ray coincidences measured with the Gammasphere array of Ge detectors. The 229.5-keV level, which has been assigned spin parity 9/2- in a recent evaluation, is shown to have spin parity 11/2-. Consequently, the ground state has spin parity 5/2+. Excited levels in La147 have been arranged into a parity-doublet structure, showing that at medium excitation energy the La147 nucleus may have octupole deformation. The B(E1) rates in La147, which are factor of four lower than in La145, suggest that the electric dipole moment in La147 is depressed by an extra mechanism, probably connected with the population of particular neutron orbitals. © 2017 American Physical Society. |
BibTeX:
@article{Wisniewski2017,
author = {Wiśniewski, J. and Urban, W. and Rząca-Urban, T. and Smith, A.G. and Smith, J.F. and Simpson, G.S. and Ahmad, I. and Greene, J.P.},
title = {Parity-doublet structure in the La90 57147 nucleus},
journal = {Physical Review C},
year = {2017},
volume = {96},
number = {6},
note = {Cited by: 8; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038425926&doi=10.1103%2fPhysRevC.96.064301&partnerID=40&md5=d03ea92ead163287416ffe25faad2d05},
doi = {10.1103/PhysRevC.96.064301}
}
|
| Bączyk P, Urban W, Złotowska D, Czerwiński M, Rząca-Urban T,
Konieczka M, Blanc A, Jentschel M, Mutti P, Köster U, Soldner T, De
France G, Simpson G and Ur C (2016), "Near-yrast excitations in nucleus 83As: Tracing the deformation in the 78Ni region", Acta Physica Polonica B. Vol. 47(3), pp. 897 – 902. |
| Abstract: Medium-spin, yrast excitations in nucleus 83As have been studied in neutron-induced fission of 235U. The experiment took place at the Institut Laue-Langevin in Grenoble where gamma rays were registered using the EXILL detector array. Recently, we proposed new tentative (9/2+) spin assignment for 2777 keV level in 83As, which is now discussed in the context of deformation showing up in 78Ni region. |
BibTeX:
@article{Bączyk2016897,
author = {Bączyk, P. and Urban, W. and Złotowska, D. and Czerwiński, M. and Rząca-Urban, T. and Konieczka, M. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G. and Ur, C.},
title = {Near-yrast excitations in nucleus 83As: Tracing the deformation in the 78Ni region},
journal = {Acta Physica Polonica B},
year = {2016},
volume = {47},
number = {3},
pages = {897 – 902},
note = {Cited by: 0; All Open Access, Bronze Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962866404&doi=10.5506%2fAPhysPolB.47.897&partnerID=40&md5=c79fc3aea21f19d4d17f4e23ee7fc0d8},
doi = {10.5506/APhysPolB.47.897}
}
|
| Ban G, Bison G, Bodek K, Chowdhuri Z, Geltenbort P, Griffith W,
Hélaine V, Henneck R, Kasprzak M, Kermaidic Y, Kirch K, Komposch S,
Koss P, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y,
Mtchedlishvili A, Musgrave M, Naviliat-Cuncic O, Piegsa F, Pierre E,
Pignol G, Quéméner G, Rawlik M, Ries D, Rebreyend D, Roccia S, Rogel
G, Schmidt-Wellenburg P, Severijns N, Wursten E, Zejma J and
Zsigmond G (2016), "Ultracold neutron detection with 6Li-doped glass scintillators: NANOSC: A fast ultracold neutron detector for the nEDM experiment at the Paul Scherrer Institute", European Physical Journal A. Vol. 52(10) |
| Abstract: This paper summarizes the results from measurements aiming to characterize ultracold neutron detection with 6Li-doped glass scintillators. Single GS10 or GS20 scintillators, with a thickness of 100-200μm, fulfill the ultracold neutron detection requirements with an acceptable neutron-gamma discrimination. This discrimination is clearly improved with a stack of two scintillators: a 6Li-depleted glass bonded to a 6Li-enriched glass. The technique of optical contact bonding is used between the two glasses in order to eliminate the need for optical glue or grease between them. Relative to a 3He Strelkov gas detector, the scintillator’s detection efficiency is lower for UCN energies close to the scintillator’s Fermi potential (85-100 neV), but becomes larger at higher UCN energies. Coupled to a digital data acquisition system, counting rates up to a few 105 counts/s can be handled. A detector based on such a scintillator stack arrangement was built and has been used in the neutron electric dipole moment experiment at the Paul Scherrer Institute since 2010. Its response for routine runs of the neutron electric dipole moment experiment is presented. © 2016, SIF, Springer-Verlag Berlin Heidelberg. |
BibTeX:
@article{Ban2016,
author = {Ban, G. and Bison, G. and Bodek, K. and Chowdhuri, Z. and Geltenbort, P. and Griffith, W.C. and Hélaine, V. and Henneck, R. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Komposch, S. and Koss, P.A. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Musgrave, M. and Naviliat-Cuncic, O. and Piegsa, F.M. and Pierre, E. and Pignol, G. and Quéméner, G. and Rawlik, M. and Ries, D. and Rebreyend, D. and Roccia, S. and Rogel, G. and Schmidt-Wellenburg, P. and Severijns, N. and Wursten, E. and Zejma, J. and Zsigmond, G.},
title = {Ultracold neutron detection with 6Li-doped glass scintillators: NANOSC: A fast ultracold neutron detector for the nEDM experiment at the Paul Scherrer Institute},
journal = {European Physical Journal A},
year = {2016},
volume = {52},
number = {10},
note = {Cited by: 13; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994017805&doi=10.1140%2fepja%2fi2016-16326-4&partnerID=40&md5=3bc6cff21fe051c71448d42129040f53},
doi = {10.1140/epja/i2016-16326-4}
}
|
| Berziņš J, Krasta T, Simonova L, Balodis M, Bondarenko V, Jentschel M, Urban W and Tomandl I (2016), "Levels of 188Re nucleus populated in thermal neutron capture reaction", Nuclear Physics A. Vol. 947, pp. 76 – 126. |
| Abstract: Levels of 188Re populated in thermal neutron capture reaction with enriched 187Re targets have been studied. Single γ-ray spectrum of 188Re, measured with the high-resolution crystal diffraction spectrometer GAMS5, as well as γγ-coincidence experiments performed with high efficiency Ge detectors, allowed to develop model-independent level scheme of the doubly-odd 188Re nucleus up to 1.5 MeV excitation energy. Analysis of the established 188Re level scheme in terms of the quasiparticle-plus-rotor model indicates coexistence of axially-deformed and triaxial structures in the energy range above 400 keV. © 2015 Elsevier B.V. |
BibTeX:
@article{Berziņš201676,
author = {Berziņš, J. and Krasta, T. and Simonova, L. and Balodis, M. and Bondarenko, V. and Jentschel, M. and Urban, W. and Tomandl, I.},
title = {Levels of 188Re nucleus populated in thermal neutron capture reaction},
journal = {Nuclear Physics A},
year = {2016},
volume = {947},
pages = {76 – 126},
note = {Cited by: 3; All Open Access, Bronze Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953277551&doi=10.1016%2fj.nuclphysa.2015.12.007&partnerID=40&md5=d687e3526f3df43fdf431b8c9f823c44},
doi = {10.1016/j.nuclphysa.2015.12.007}
}
|
| Bocchi G, Leoni S, Fornal B, Colò G, Bortignon P, Bottoni S, Bracco A, Michelagnoli C, Bazzacco D, Blanc A, de France G, Jentschel M, Köster U, Mutti P, Régis J-M, Simpson G, Soldner T, Ur C, Urban W, Fraile L, Lozeva R, Belvito B, Benzoni G, Bruce A, Carroll R, Cieplicka-Oryǹczak N, Crespi F, Didierjean F, Jolie J, Korten W, Kröll T, Lalkovski S, Mach H, Mărginean N, Melon B, Mengoni D, Million B, Nannini A, Napoli D, Olaizola B, Paziy V, Podolyák Z, Regan P, Saed-Samii N, Szpak B and Vedia V (2016), "The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb", Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Vol. 760, pp. 273 – 278. |
| Abstract: The γ-ray decay of excited states of the one-valence-proton nucleus 133Sb has been studied using cold-neutron induced fission of 235U and 241Pu targets, during the EXILL campaign at the ILL reactor in Grenoble. By using a highly efficient HPGe array, coincidences between γ-rays prompt with the fission event and those delayed up to several tens of microseconds were investigated, allowing to observe, for the first time, high-spin excited states above the 16.6 μs isomer. Lifetimes analysis, performed by fast-timing techniques with LaBr3(Ce) scintillators, revealed a difference of almost two orders of magnitude in B(M1) strength for transitions between positive-parity medium-spin yrast states. The data are interpreted by a newly developed microscopic model which takes into account couplings between core excitations (both collective and non-collective) of the doubly magic nucleus 132Sn and the valence proton, using the Skyrme effective interaction in a consistent way. The results point to a fast change in the nature of particle-core excitations with increasing spin. © 2016 The Authors |
BibTeX:
@article{Bocchi2016273,
author = {Bocchi, G. and Leoni, S. and Fornal, B. and Colò, G. and Bortignon, P.F. and Bottoni, S. and Bracco, A. and Michelagnoli, C. and Bazzacco, D. and Blanc, A. and de France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Régis, J.-M. and Simpson, G. and Soldner, T. and Ur, C.A. and Urban, W. and Fraile, L.M. and Lozeva, R. and Belvito, B. and Benzoni, G. and Bruce, A. and Carroll, R. and Cieplicka-Oryǹczak, N. and Crespi, F.C.L. and Didierjean, F. and Jolie, J. and Korten, W. and Kröll, T. and Lalkovski, S. and Mach, H. and Mărginean, N. and Melon, B. and Mengoni, D. and Million, B. and Nannini, A. and Napoli, D. and Olaizola, B. and Paziy, V. and Podolyák, Zs. and Regan, P.H. and Saed-Samii, N. and Szpak, B. and Vedia, V.},
title = {The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb},
journal = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
year = {2016},
volume = {760},
pages = {273 – 278},
note = {Cited by: 27; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978127504&doi=10.1016%2fj.physletb.2016.06.065&partnerID=40&md5=367947f276c4e54127c4c666514b407d},
doi = {10.1016/j.physletb.2016.06.065}
}
|
| Cieplicka-Oryńczak N, Fornal B, Leoni S, Bazzacco D, Blanc A,
Bocchi G, Bottoni S, De France G, Jentschel M, Köster U, Mutti P,
Simpson G, Soldner T, Szpak B, Ur C and Urban W (2016), "Approaching complete low-spin spectroscopy of 210Bi with a cold-neutron capture reaction", Physical Review C. Vol. 93(5) |
| Abstract: The low-spin structure of the Bi210 nucleus was investigated in the neutron capture experiment Bi209(n,γ)Bi210 performed at ILL Grenoble at the PF1B cold-neutron facility. By using the EXILL multidetector array, consisting of 46 high-purity germanium crystals, and γγ-coincidence technique, 64 primary γ rays were observed (40 new) and a total number of 70 discrete states (33 new) were located below the neutron binding energy in Bi210. The analysis of the angular correlations of γ rays provided information about transitions multipolarities, which made it possible to confirm most of the previously known spin-parity assignments and helped establish new ones. The obtained experimental results were compared to shell-model calculations involving one-valence-proton, one-valence-neutron excitations outside the Pb208 core. It has been found that while up to the energy of ∼2 MeV each state observed in Bi210 has its calculated counterpart; at higher excitation energies some levels cannot be described by the valence particle couplings. These states may arise from couplings of valence particles to the 3- octupole phonon of the doubly magic Pb208 core and may serve as a testing ground for models which describe single particle-phonon excitations. © 2016 American Physical Society. |
BibTeX:
@article{Cieplicka-Oryńczak2016,
author = {Cieplicka-Oryńczak, N. and Fornal, B. and Leoni, S. and Bazzacco, D. and Blanc, A. and Bocchi, G. and Bottoni, S. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Simpson, G. and Soldner, T. and Szpak, B. and Ur, C. and Urban, W.},
title = {Approaching complete low-spin spectroscopy of Bi 210 with a cold-neutron capture reaction},
journal = {Physical Review C},
year = {2016},
volume = {93},
number = {5},
note = {Cited by: 16; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84964898163&doi=10.1103%2fPhysRevC.93.054302&partnerID=40&md5=1d82551674cce1fed3aea8281093fcae},
doi = {10.1103/PhysRevC.93.054302}
}
|
| Cieplicka-Oryńczak N, Szpak B, Leoni S, Fornal B, Bazzacco D, Blanc A, Bocchi G, Bottoni S, De France G, Jentschel M, Köster U, Mutti P, Simpson G, Soldner T, Ur C and Urban W (2016), "Multipolarity of the 2-→1-, ground-state transition in Bi 210 via multivariable angular correlation analysis", Physical Review C. Vol. 94(1) |
| Abstract: The multipolarity of the main transition leading to the ground state in Bi210 was investigated using the angular correlations of γ rays. The analyzed γ-coincidence data were obtained from the Bi209(n,γ)Bi210 experiment performed at Institut Laue-Langevin Grenoble at the PF1B cold-neutron facility. The EXILL (EXOGAM at the ILL) multidetector array, consisting of 16 high-purity germanium detectors, was used to detect γ transitions. The mixing ratio of the 320-keV γ ray was defined by minimizing a multivariable χΣ2 function constructed from the coefficients of angular correlation functions for seven pairs of strong transitions in Bi210. As a result, the almost pure M1 multipolarity of the 320-keV γ ray was obtained, with an E2 admixture of less than 0.6% only (95% confidence limit). Based on this multipolarity the neutron-capture cross section leading to the ground state in Bi210, that decays in turn to radiotoxic Po210, was determined to be within the limits 21.3(9) and 21.5(9) mb. This result is important for nuclear reactor applications. © 2016 American Physical Society. |
BibTeX:
@article{Cieplicka-Oryńczak2016,
author = {Cieplicka-Oryńczak, N. and Szpak, B. and Leoni, S. and Fornal, B. and Bazzacco, D. and Blanc, A. and Bocchi, G. and Bottoni, S. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Simpson, G. and Soldner, T. and Ur, C. and Urban, W.},
title = {Multipolarity of the 2-→1-, ground-state transition in Bi 210 via multivariable angular correlation analysis},
journal = {Physical Review C},
year = {2016},
volume = {94},
number = {1},
note = {Cited by: 15; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979270713&doi=10.1103%2fPhysRevC.94.014311&partnerID=40&md5=fb43fc8d5c3f80523556d4e1474da1df},
doi = {10.1103/PhysRevC.94.014311}
}
|
| Czerwiński M, Rzaca-Urban T, Urban W, Baczyk P, Sieja K, Timár J,
Nyakó B, Kuti I, Tornyi T, Atanasova L, Blanc A, Jentschel M, Mutti
P, Köster U, Soldner T, De France G, Simpson G and Ur C (2016), "Neutron-proton multiplets in the odd-odd nucleus 9037Rb53", Physical Review C. Vol. 93(3) |
| Abstract: Medium-spin excited levels in Rb90, populated in the fission of U235 induced by neutrons, have been observed for the first time. γ radiation from fission has been measured by using the EXILL array of Ge detectors at the cold-neutron-beam facility PF1B of the Institut Laue-Langevin, Grenoble. Low-energy levels are interpreted as members of the πp3/2-1ν(d5/2)3, πf5/2-1ν(d5/2)3, and πg9/2ν(d5/2)3 multiplets with the 0- ground state due to the seniority-3 coupling in the νd5/2 shell. Analogous anomalous coupling within the πg9/2ν(d5/2)3 configuration explains the 5+, 6+, and 7+ triplet of states, observed at medium spins, similar to the triplet seen in the N=53 isotone, Br88. Shell-model calculations reproduce well the proposed structures in Rb88,90 and support the seniority-3 coupling in N=53 isotones and its absence in N=51 isotones. The structure of the odd-odd Rb88 and Rb90 nuclei provides an argument in favor of the collectivity building up at the neutron number N=53. © 2016 American Physical Society. |
BibTeX:
@article{Czerwiński2016,
author = {Czerwiński, M. and Rzaca-Urban, T. and Urban, W. and Baczyk, P. and Sieja, K. and Timár, J. and Nyakó, B.M. and Kuti, I. and Tornyi, T.G. and Atanasova, L. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Neutron-proton multiplets in the odd-odd nucleus Rb53 3790},
journal = {Physical Review C},
year = {2016},
volume = {93},
number = {3},
note = {Cited by: 12},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84962288132&doi=10.1103%2fPhysRevC.93.034318&partnerID=40&md5=eaf6bc670187d4c4a5b23ca76cc331ad},
doi = {10.1103/PhysRevC.93.034318}
}
|
| Ilieva S, Kröll T, Régis J-M, Saed-Samii N, Blanc A, Bruce A, Fraile L, De France G, Hartig A-L, Henrich C, Ignatov A, Jentschel M, Jolie J, Korten W, Köster U, Lalkovski S, Lozeva R, Mach H, Mǎrginean N, Mutti P, Paziy V, Regan P, Simpson G, Soldner T, Thürauf M, Ur C, Urban W and Warr N (2016), "Measurement of picosecond lifetimes in neutron-rich Xe isotopes", Physical Review C. Vol. 94(3) |
| Abstract: Background: Lifetimes of nuclear excited states in fission fragments have been studied in the past following isotope separation, thus giving access mainly to the fragments' daughters and only to long-lived isomeric states in the primary fragments. For the first time now, short-lived excited states in the primary fragments, produced in neutron-induced prompt fission of U235 and Pu241, were studied within the EXILL&FATIMA campaign at the intense neutron-beam facility of the Institute Laue-Langevin in Grenoble. Purpose: We aim to investigate the quadrupole collective properties of neutron-rich even-even Xe138,140,142 isotopes lying between the double shell closure N=82 and Z=50 and a deformed region with octupole collectivity. Method: The γ rays emitted from the excited fragments were detected with a mixed array consisting of 8 HPGe EXOGAM Clover detectors (EXILL) and 16 LaBr3(Ce) fast scintillators (FATIMA). The detector system has the unique ability to select the interesting fragment making use of the high resolution of the HPGe detectors and determine subnanosecond lifetimes using the fast scintillators. For the analysis the generalized centroid difference method was used. Results: We show that quadrupole collectivity increases smoothly with increasing neutron number above the closed N=82 neutron shell. Our measurements are complemented by state-of-the-art theory calculations based on shell-model descriptions. Conclusions: The observed smooth increase in quadrupole collectivity is similar to the evolution seen in the measured masses of the xenon isotopic chain and is well reproduced by theory. This behavior is in contrast to higher Z even-even nuclei where abrupt change in deformation occurs around N=90. © 2016 American Physical Society. |
BibTeX:
@article{Ilieva2016,
author = {Ilieva, S. and Kröll, Th. and Régis, J.-M. and Saed-Samii, N. and Blanc, A. and Bruce, A.M. and Fraile, L.M. and De France, G. and Hartig, A.-L. and Henrich, C. and Ignatov, A. and Jentschel, M. and Jolie, J. and Korten, W. and Köster, U. and Lalkovski, S. and Lozeva, R. and Mach, H. and Mǎrginean, N. and Mutti, P. and Paziy, V. and Regan, P.H. and Simpson, G.S. and Soldner, T. and Thürauf, M. and Ur, C.A. and Urban, W. and Warr, N.},
title = {Measurement of picosecond lifetimes in neutron-rich Xe isotopes},
journal = {Physical Review C},
year = {2016},
volume = {94},
number = {3},
note = {Cited by: 19; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990232192&doi=10.1103%2fPhysRevC.94.034302&partnerID=40&md5=9da8bc0d2f26bae0329a6b67f8374d43},
doi = {10.1103/PhysRevC.94.034302}
}
|
| Nyakó B, Timàr J, Csatlós M, Dombràdi Z, Krasznahorkay A, Kuti I,
Sohler D, Tornyi T, Czerwiński M, Rząca-Urban T, Urban W, Bączyk P,
Atanasova L, Balabanski D, Sieja K, Blanc A, Jentschel M, Köster U,
Mutti P, Soldner T, De France G, Simpson G and Ur C (2016), "Medium-spin states of the neutron-rich 87,89Br isotopes: Configurations and shapes", Journal of Physics: Conference Series. Vol. 724(1) |
| Abstract: Medium-spin excited states of the neutron-rich 87Br and 89Br nuclei were observed and studied for the first time. They were populated in fission of 235U induced by the cold-neutron beam of the PF1B facility of the Institut Laue-Langevin, Grenoble. The measurement of γ radiation following fission has been performed using the EXILL array of Ge detectors. The observed level schemes were compared with results of large valence space shell model calculations. Both medium-spin level schemes consist of band-like structures, whihich can be understood as bands built on the πf 5/2, πp 3/2 and πg 9/2 configurations. Both nuclei have 5/2- ground state spin-parity contrary to the odd-mass Br isotopes containing fewer neutrons, which have 3/2- ground state spin-parity. On the basis of the properties of the πg 9/2 decoupled bands the deformations of the 87Br and 89Br fit to the systematics of nuclei in the region. 87Br is close to the vibrational limit, while 89Br is more rotational. © Published under licence by IOP Publishing Ltd. |
BibTeX:
@conference{Nyakó2016,
author = {Nyakó, B.M. and Timàr, J. and Csatlós, M. and Dombràdi, Zs and Krasznahorkay, A. and Kuti, I. and Sohler, D. and Tornyi, T.G. and Czerwiński, M. and Rząca-Urban, T. and Urban, W. and Bączyk, P. and Atanasova, L. and Balabanski, D.L. and Sieja, K. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Medium-spin states of the neutron-rich 87,89Br isotopes: Configurations and shapes},
journal = {Journal of Physics: Conference Series},
year = {2016},
volume = {724},
number = {1},
note = {Cited by: 2; All Open Access, Bronze Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987618012&doi=10.1088%2f1742-6596%2f724%2f1%2f012051&partnerID=40&md5=55636af6091d04edba9e7f298713a7b9},
doi = {10.1088/1742-6596/724/1/012051}
}
|
| Olaizola B, Mach H, Fraile L, Benito J, Borge M, Boutami R, Butler
P, Dlouhy Z, Fynbo H, Hoff P, Hyldegaard S, Jeppesen H, Jokinen A,
Jollet C, Korgul A, Köster U, Kröll T, Kurcewicz W, Marechal F,
Mrazek J, Nilsson T, Płóciennik W, Ruchowska E, Schuber R,
Schwerdtfeger W, Sewtz M, Simpson G, Stanoiu M, Tengblad O, Thirolf
P and Yordanov D (2016), "High-sensitivity study of levels in 30Al following β decay of 30Mg", Physical Review C. Vol. 94(5) |
| Abstract: γ-ray and fast-timing spectroscopy were used to study levels in Al30 populated following the β- decay of Mg30. Five new transitions and three new levels were located in Al30. A search was made to identify the third 1+ state expected at an excitation energy of ∼2.5 MeV. Two new levels were found, at 3163.9 and 3362.5 keV, that are firm candidates for this state. Using the advanced time-delayed (ATD) βγγ(t) method we have measured the lifetime of the 243.8-keV state to be T1/2=15(4)ps, which implies that the 243.8-keV transition is mainly of M1 character. Its fast B(M1;2+→3+) value of 0.10(3) W.u. is in very good agreement with the USD shell-model prediction of 0.090 W.u. The 1801.5-keV level is the only level observed in this study that could be a candidate for the second excited 2+ state. © 2016 authors. Published by the American Physical Society. |
BibTeX:
@article{Olaizola2016,
author = {Olaizola, B. and Mach, H. and Fraile, L.M. and Benito, J. and Borge, M.J.G. and Boutami, R. and Butler, P.A. and Dlouhy, Z. and Fynbo, H.O.U. and Hoff, P. and Hyldegaard, S. and Jeppesen, H.B. and Jokinen, A. and Jollet, C. and Korgul, A. and Köster, U. and Kröll, Th. and Kurcewicz, W. and Marechal, F. and Mrazek, J. and Nilsson, T. and Płóciennik, W.A. and Ruchowska, E. and Schuber, R. and Schwerdtfeger, W. and Sewtz, M. and Simpson, G.S. and Stanoiu, M. and Tengblad, O. and Thirolf, P.G. and Yordanov, D.T.},
title = {High-sensitivity study of levels in Al 30 following β decay of Mg 30},
journal = {Physical Review C},
year = {2016},
volume = {94},
number = {5},
note = {Cited by: 4; All Open Access, Green Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996619218&doi=10.1103%2fPhysRevC.94.054318&partnerID=40&md5=4a51d6a46aa57b936d40b7f27a1e63a4},
doi = {10.1103/PhysRevC.94.054318}
}
|
| Thürauf M, Scheck M, Bernards C, Blanc A, Cooper N, Defrance G,
Jentschel M, Jolie J, Kaleja O, Köster U, Kröll T, Mutti P, Simpson
G, Soldner T, Tezgel M, Urban W, Vanhoy J, Werner M, Werner V and
Zell K (2016), "Identification of low-energy isovector octupole states in 144Nd", Journal of Physics: Conference Series. Vol. 724(1) |
| Abstract: Recently, first candidates for low-lying isovector states in the octupole sector were suggested. The unambiguous identification of those states will contribute to the decomposition of the octupole-octupole residual interaction in an isoscalar and isovector part. This will help us understand the octupole degree of freedom. In 144Nd the 3- state at 2778 keV is a good candidate for such a "mixed-symmetry'' octupole state. In order to clarify the nature of this state, a 143Nd(n, γ)-experiment was conducted with the EXILL-setup. Following neutron capture the 3- states are populated and EXILL provides the opportunity to determine the multipole-mixing ratios of the 3i -→31 - transitions. For the transition from the "mixed-symmetry" octupole state to the symmetric 31 - state we expect a strong M1 component. © Published under licence by IOP Publishing Ltd. |
BibTeX:
@conference{Thürauf2016,
author = {Thürauf, M. and Scheck, M. and Bernards, C. and Blanc, A. and Cooper, N. and Defrance, G. and Jentschel, M. and Jolie, J. and Kaleja, O. and Köster, U. and Kröll, T. and Mutti, P. and Simpson, G.S. and Soldner, T. and Tezgel, M. and Urban, W. and Vanhoy, J. and Werner, M. and Werner, V. and Zell, K.O.},
title = {Identification of low-energy isovector octupole states in 144Nd},
journal = {Journal of Physics: Conference Series},
year = {2016},
volume = {724},
number = {1},
note = {Cited by: 1; All Open Access, Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987654855&doi=10.1088%2f1742-6596%2f724%2f1%2f012050&partnerID=40&md5=d6a2bda94f4306f2fcbaea1a1d7cf231},
doi = {10.1088/1742-6596/724/1/012050}
}
|
| Urban W, Köster U, Jentschel M, Mutti P, Märkisch B, Rzaca-Urban
T, Bernards C, Fransen C, Jolie J, Thomas T and Simpson G (2016), "Precise measurement of energies in 115Sn following the (n,γ) reaction", Physical Review C. Vol. 94(1) |
| Abstract: The first measurement of γ rays from the Sn114(n,γ) reaction using cold neutrons, performed with an array of Ge detectors at the PF1B facility of the Institute Laue-Langevin in Grenoble, has provided the most accurate energy, Qβ=173(12) eV, of β- decay of the In115 ground state to the first excited state in Sn115. This is the lowest of all such energies in the known nuclear landscape. The accuracy of the neutron binding energy of Sn115 and the mass of Sn114 have been improved. © 2016 American Physical Society. |
BibTeX:
@article{Urban2016,
author = {Urban, W. and Köster, U. and Jentschel, M. and Mutti, P. and Märkisch, B. and Rzaca-Urban, T. and Bernards, Ch. and Fransen, Ch. and Jolie, J. and Thomas, T. and Simpson, G.S.},
title = {Precise measurement of energies in Sn 115 following the (n,γ) reaction},
journal = {Physical Review C},
year = {2016},
volume = {94},
number = {1},
note = {Cited by: 8},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978254465&doi=10.1103%2fPhysRevC.94.011302&partnerID=40&md5=cf36a82ef2b64553733c0918c82ea1ac},
doi = {10.1103/PhysRevC.94.011302}
}
|
| Urban W, Sieja K, Materna T, Czerwiński M, Rząca-Urban T, Blanc A, Jentschel M, Mutti P, Köster U, Soldner T, De France G, Simpson G, Ur C, Bernards C, Fransen C, Jolie J, Regis J-M, Thomas T and Warr N (2016), "Low-spin structure of 8635Br51 and 8636Kr50 nuclei: The role of the g7/2 neutron orbital", Physical Review C. Vol. 94(4) |
| Abstract: Low-spin excited levels in Br513586 and Kr503686, populated following β- decay and the neutron-induced fission of U235, were measured using the Lohengrin fission-fragment separator and the EXILL array of Ge detectors at the PF1B cold-neutron facility of the Institute Laue-Langevin Grenoble. Improved populations of excited levels in Br86 remove inconsistencies existing in the literature on this nucleus. Directional-linear-polarization correlations, analyzed using newly developed formulas, as well as precise angular correlations allowed the unique 1- and 2- spin and parity assignments to the ground state of Br86 and the 4016.3-keV level in Kr86, respectively. Based on these results we propose that the Gamow-Teller β- decays of Se86 and Br86 involve the νg7/2→πg9/2 transition in addition to the νp3/2→πp3/2 transition proposed earlier. In Kr86 we have identified 11+, 23+, and 31+ levels, analogous to the mixed-symmetry states in Mo94, which in Kr86 are from proton excitations, only. Large-scale, shell-model calculations with refined interactions reproduce well excitations in Br86 and Kr86 and support our interpretations. © 2016 American Physical Society. |
BibTeX:
@article{Urban2016,
author = {Urban, W. and Sieja, K. and Materna, T. and Czerwiński, M. and Rząca-Urban, T. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A. and Bernards, C. and Fransen, C. and Jolie, J. and Regis, J.-M. and Thomas, T. and Warr, N.},
title = {Low-spin structure of Br51 3586 and Kr50 3686 nuclei: The role of the g7/2 neutron orbital},
journal = {Physical Review C},
year = {2016},
volume = {94},
number = {4},
note = {Cited by: 15},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84993939945&doi=10.1103%2fPhysRevC.94.044328&partnerID=40&md5=2d6c7132a22eb647c417eb6a7ee0fa0e},
doi = {10.1103/PhysRevC.94.044328}
}
|
| Afach S, Ayres N, Ban G, Bison G, Bodek K, Chowdhuri Z, Daum M,
Fertl M, Franke B, Griffith W, Grujić ZD, Harris PG, Heil W, Hélaine
V, Kasprzak M, Kermaidic Y, Kirch K, Knowles P, Koch H-C, Komposch
S, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Mtchedlishvili
A, Musgrave M, Naviliat-Cuncic O, Pendlebury JM, Piegsa FM, Pignol
G, Plonka-Spehr C, Prashanth PN, Quéméner G, Rawlik M, Rebreyend D,
Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Severijns N,
Thorne JA, Weis A, Wursten E, Wyszynski G, Zejma J, Zenner J and
Zsigmond G (2015), "Observation of Gravitationally Induced Vertical Striation of Polarized Ultracold Neutrons by Spin-Echo Spectroscopy", Phys. Rev. Lett.., oct, 2015. Vol. 115(16), pp. 162502. |
| Abstract: We describe a spin-echo method for ultracold neutrons (UCNs) confined in a precession chamber and exposed to a |B0|=1μT magnetic field. We have demonstrated that the analysis of UCN spin-echo resonance signals in combination with knowledge of the ambient magnetic field provides an excellent method by which to reconstruct the energy spectrum of a confined ensemble of neutrons. The method takes advantage of the relative dephasing of spins arising from a gravitationally induced striation of stored UCNs of different energies, and also permits an improved determination of the vertical magnetic-field gradient with an exceptional accuracy of 1.1pT/cm. This novel combination of a well-known nuclear resonance method and gravitationally induced vertical striation is unique in the realm of nuclear and particle physics and should prove to be invaluable for the assessment of systematic effects in precision experiments such as searches for an electric dipole moment of the neutron or the measurement of the neutron lifetime. |
BibTeX:
@article{Afach2015,
author = {Afach, S. and Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Chowdhuri, Z. and Daum, M. and Fertl, M. and Franke, B. and Griffith, W.C. and Grujić, Z. D. and Harris, P. G. and Heil, W. and Hélaine, V. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Knowles, P. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Musgrave, M. and Naviliat-Cuncic, O. and Pendlebury, J. M. and Piegsa, F. M. and Pignol, G. and Plonka-Spehr, C. and Prashanth, P. N. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Thorne, J. A. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Observation of Gravitationally Induced Vertical Striation of Polarized Ultracold Neutrons by Spin-Echo Spectroscopy},
journal = {Phys. Rev. Lett.},
year = {2015},
volume = {115},
number = {16},
pages = {162502},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.115.162502},
doi = {10.1103/PhysRevLett.115.162502}
}
|
| Afach S, Ayres N, Baker C, Ban G, Bison G, Bodek K, Fertl M,
Franke B, Geltenbort P, Green K, Griffith W, Van Der Grinten M,
Grujić Z, Harris P, Heil W, Hélaine V, Iaydjiev P, Ivanov S,
Kasprzak M, Kermaidic Y, Kirch K, Koch H-C, Komposch S, Kozela A,
Krempel J, Lauss B, Lefort T, Lemière Y, Musgrave M, Naviliat-Cuncic
O, Pendlebury J, Piegsa F, Pignol G, Plonka-Spehr C, Prashanth P,
Quéméner G, Rawlik M, Rebreyend D, Ries D, Roccia S, Rozpedzik D,
Schmidt-Wellenburg P, Severijns N, Shiers D, Thorne J, Weis A,
Wursten E, Zejma J, Zenner J and Zsigmond G (2015), "Gravitational depolarization of ultracold neutrons: Comparison with data", Physical Review D - Particles, Fields, Gravitation and Cosmology. Vol. 92(5) |
| Abstract: We compare the expected effects of so-called gravitationally enhanced depolarization of ultracold neutrons to measurements carried out in a spin-precession chamber exposed to a variety of vertical magnetic-field gradients. In particular, we have investigated the dependence upon these field gradients of spin-depolarization rates and also of shifts in the measured neutron Larmor precession frequency. We find excellent qualitative agreement, with gravitationally enhanced depolarization accounting for several previously unexplained features in the data. © 2015 American Physical Society. |
BibTeX:
@article{Afach2015,
author = {Afach, S. and Ayres, N.J. and Baker, C.A. and Ban, G. and Bison, G. and Bodek, K. and Fertl, M. and Franke, B. and Geltenbort, P. and Green, K. and Griffith, W.C. and Van Der Grinten, M. and Grujić, Z.D. and Harris, P.G. and Heil, W. and Hélaine, V. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Musgrave, M. and Naviliat-Cuncic, O. and Pendlebury, J.M. and Piegsa, F.M. and Pignol, G. and Plonka-Spehr, C. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Shiers, D. and Thorne, J.A. and Weis, A. and Wursten, E. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Gravitational depolarization of ultracold neutrons: Comparison with data},
journal = {Physical Review D - Particles, Fields, Gravitation and Cosmology},
year = {2015},
volume = {92},
number = {5},
note = {Cited by: 13; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943749706&doi=10.1103%2fPhysRevD.92.052008&partnerID=40&md5=f7540d8ccfb348bcef3d73ffc762b6ff},
doi = {10.1103/PhysRevD.92.052008}
}
|
| Afach S, Ayres N, Ban G, Bison G, Bodek K, Chowdhuri Z, Daum M,
Fertl M, Franke B, Griffith W, Grujić Z, Harris P, Heil W, Hélaine
V, Kasprzak M, Kermaidic Y, Kirch K, Knowles P, Koch H-C, Komposch
S, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Mtchedlishvili
A, Musgrave M, Naviliat-Cuncic O, Pendlebury J, Piegsa F, Pignol G,
Plonka-Spehr C, Prashanth P, Quéméner G, Rawlik M, Rebreyend D, Ries
D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Severijns N, Thorne
J, Weis A, Wursten E, Wyszynski G, Zejma J, Zenner J and Zsigmond G
(2015), "Observation of Gravitationally Induced Vertical Striation of Polarized Ultracold Neutrons by Spin-Echo Spectroscopy", Physical Review Letters. Vol. 115(16) |
| Abstract: We describe a spin-echo method for ultracold neutrons (UCNs) confined in a precession chamber and exposed to a |B0|=1μT magnetic field. We have demonstrated that the analysis of UCN spin-echo resonance signals in combination with knowledge of the ambient magnetic field provides an excellent method by which to reconstruct the energy spectrum of a confined ensemble of neutrons. The method takes advantage of the relative dephasing of spins arising from a gravitationally induced striation of stored UCNs of different energies, and also permits an improved determination of the vertical magnetic-field gradient with an exceptional accuracy of 1.1pT/cm. This novel combination of a well-known nuclear resonance method and gravitationally induced vertical striation is unique in the realm of nuclear and particle physics and should prove to be invaluable for the assessment of systematic effects in precision experiments such as searches for an electric dipole moment of the neutron or the measurement of the neutron lifetime. © 2015 American Physical Society. © 2015 American Physical Society. |
BibTeX:
@article{Afach2015a,
author = {Afach, S. and Ayres, N.J. and Ban, G. and Bison, G. and Bodek, K. and Chowdhuri, Z. and Daum, M. and Fertl, M. and Franke, B. and Griffith, W.C. and Grujić, Z.D. and Harris, P.G. and Heil, W. and Hélaine, V. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Knowles, P. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Musgrave, M. and Naviliat-Cuncic, O. and Pendlebury, J.M. and Piegsa, F.M. and Pignol, G. and Plonka-Spehr, C. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Thorne, J.A. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Observation of Gravitationally Induced Vertical Striation of Polarized Ultracold Neutrons by Spin-Echo Spectroscopy},
journal = {Physical Review Letters},
year = {2015},
volume = {115},
number = {16},
note = {Cited by: 13; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945286474&doi=10.1103%2fPhysRevLett.115.162502&partnerID=40&md5=131ef00e11e64bf34c4c87a99af752eb},
doi = {10.1103/PhysRevLett.115.162502}
}
|
| Afach S, Baker C, Ban G, Bison G, Bodek K, Chowdhuri Z, Daum M,
Fertl M, Franke B, Geltenbort P, Green K, Van Der Grinten M, Grujic
Z, Harris P, Heil W, Hélaine V, Henneck R, Horras M, Iaydjiev P,
Ivanov S, Kasprzak M, Kermaïdic Y, Kirch K, Knowles P, Koch H-C,
Komposch S, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y,
Mtchedlishvili A, Naviliat-Cuncic O, Pendlebury J, Piegsa F, Pignol
G, Prashant P, Quéméner G, Rebreyend D, Ries D, Roccia S,
Schmidt-Wellenburg P, Severijns N, Weis A, Wursten E, Wyszynski G,
Zejma J, Zenner J and Zsigmond G (2015), "Measurement of a false electric dipole moment signal from 199Hg atoms exposed to an inhomogeneous magnetic field", European Physical Journal D. Vol. 69(10) |
| Abstract: We report on the measurement of a Larmor frequency shift proportional to the electric-field strength for 199Hg atoms contained in a volume permeated with aligned magnetic and electric fields. This shift arises from the interplay between the inevitable magnetic field gradients and the motional magnetic field. The proportionality to electric-field strength makes it apparently similar to an electric dipole moment (EDM) signal, although unlike an EDM this effect is P- and T-conserving. We have used a neutron magnetic resonance EDM spectrometer, featuring a mercury co-magnetometer and an array of external cesium magnetometers, to measure the shift as a function of the applied magnetic field gradient. Our results are in good agreement with theoretical expectations. © 2015 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. |
BibTeX:
@article{Afach2015,
author = {Afach, S. and Baker, C.A. and Ban, G. and Bison, G. and Bodek, K. and Chowdhuri, Z. and Daum, M. and Fertl, M. and Franke, B. and Geltenbort, P. and Green, K. and Van Der Grinten, M.G.D. and Grujic, Z. and Harris, P.G. and Heil, W. and Hélaine, V. and Henneck, R. and Horras, M. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaïdic, Y. and Kirch, K. and Knowles, P. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Naviliat-Cuncic, O. and Pendlebury, J.M. and Piegsa, F.M. and Pignol, G. and Prashant, P.N. and Quéméner, G. and Rebreyend, D. and Ries, D. and Roccia, S. and Schmidt-Wellenburg, P. and Severijns, N. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Measurement of a false electric dipole moment signal from 199Hg atoms exposed to an inhomogeneous magnetic field},
journal = {European Physical Journal D},
year = {2015},
volume = {69},
number = {10},
note = {Cited by: 15; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942891471&doi=10.1140%2fepjd%2fe2015-60207-4&partnerID=40&md5=58252c65918abbfb51ed02cf3d148773},
doi = {10.1140/epjd/e2015-60207-4}
}
|
| Afach S, Ban G, Bison G, Bodek K, Burghoff M, Daum M, Fertl M,
Franke B, Grujić Z, Hélaine V, Kasprzak M, Kermaïdic Y, Kirch K,
Knowles P, Koch H-C, Komposch S, Kozela A, Krempel J, Lauss B,
Lefort T, Lemière Y, Mtchedlishvili A, Naviliat-Cuncic O, Piegsa F,
Pignol G, Prashanth P, Quéméner G, Rebreyend D, Ries D, Roccia S,
Schmidt-Wellenburg P, Schnabel A, Severijns N, Voigt J, Weis A,
Wyszynski G, Zejma J, Zenner J and Zsigmond G (2015), "Constraining interactions mediated by axion-like particles with ultracold neutrons", Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Vol. 745, pp. 58 – 63. |
| Abstract: We report a new limit on a possible short range spin-dependent interaction from the precise measurement of the ratio of Larmor precession frequencies of stored ultracold neutrons and Hg199 atoms confined in the same volume. The measurement was performed in a 1μT vertical magnetic holding field with the apparatus searching for a permanent electric dipole moment of the neutron at the Paul Scherrer Institute. A possible coupling between freely precessing polarized neutron spins and unpolarized nucleons of the wall material can be investigated by searching for a tiny change of the precession frequencies of neutron and mercury spins. Such a frequency change can be interpreted as a consequence of a short range spin-dependent interaction that could possibly be mediated by axions or axion-like particles. The interaction strength is proportional to the CP violating product of scalar and pseudoscalar coupling constants gSgP. Our result confirms limits from complementary experiments with spin-polarized nuclei in a model-independent way. Limits from other neutron experiments are improved by up to two orders of magnitude in the interaction range of 10-6<λ<10-4m. © 2015 The Authors. |
BibTeX:
@article{Afach2015b,
author = {Afach, S. and Ban, G. and Bison, G. and Bodek, K. and Burghoff, M. and Daum, M. and Fertl, M. and Franke, B. and Grujić, Z.D. and Hélaine, V. and Kasprzak, M. and Kermaïdic, Y. and Kirch, K. and Knowles, P. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Naviliat-Cuncic, O. and Piegsa, F.M. and Pignol, G. and Prashanth, P.N. and Quéméner, G. and Rebreyend, D. and Ries, D. and Roccia, S. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Voigt, J. and Weis, A. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Constraining interactions mediated by axion-like particles with ultracold neutrons},
journal = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
year = {2015},
volume = {745},
pages = {58 – 63},
note = {Cited by: 26; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928344972&doi=10.1016%2fj.physletb.2015.04.024&partnerID=40&md5=7047d23ee8a421f330fa5b0e929225af},
doi = {10.1016/j.physletb.2015.04.024}
}
|
| Afach S, Ban G, Bison G, Bodek K, Chowdhuri Z, Daum M, Fertl M,
Franke B, Geltenbort P, Grujić Z, Hayen L, Hélaine V, Henneck R,
Kasprzak M, Kermaïdic Y, Kirch K, Komposch S, Kozela A, Krempel J,
Lauss B, Lefort T, Lemière Y, Mtchedlishvili A, Naviliat-Cuncic O,
Piegsa F, Pignol G, Prashanth P, Quéméner G, Rawlik M, Ries D,
Rebreyend D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Severijns
N, Weis A, Wursten E, Wyszynski G, Zejma J and Zsigmond G (2015), "A device for simultaneous spin analysis of ultracold neutrons", European Physical Journal A. Vol. 51(11), pp. 1 – 10. |
| Abstract: We report on the design and first tests of a device allowing for measurement of ultracold neutrons polarisation by means of the simultaneous analysis of the two spin components. The device was developed in the framework of the neutron electric dipole moment experiment at the Paul Scherrer Institute. Individual parts and the entire newly built system have been characterised with ultracold neutrons. The gain in statistical sensitivity obtained with the simultaneous spin analyser is (18.2± 6.1)% relative to the former sequential analyser under nominal running conditions. © 2015, SIF, Springer-Verlag Berlin Heidelberg. |
BibTeX:
@article{Afach20151,
author = {Afach, S. and Ban, G. and Bison, G. and Bodek, K. and Chowdhuri, Z. and Daum, M. and Fertl, M. and Franke, B. and Geltenbort, P. and Grujić, Z.D. and Hayen, L. and Hélaine, V. and Henneck, R. and Kasprzak, M. and Kermaïdic, Y. and Kirch, K. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Naviliat-Cuncic, O. and Piegsa, F.M. and Pignol, G. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Ries, D. and Rebreyend, D. and Roccia, S. and Rozpedzik, D. and Schmidt-Wellenburg, P. and Severijns, N. and Weis, A. and Wursten, E. and Wyszynski, G. and Zejma, J. and Zsigmond, G.},
title = {A device for simultaneous spin analysis of ultracold neutrons},
journal = {European Physical Journal A},
year = {2015},
volume = {51},
number = {11},
pages = {1 – 10},
note = {Cited by: 16; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946542685&doi=10.1140%2fepja%2fi2015-15143-7&partnerID=40&md5=7df559116e53f9f65375bc937faa90a5},
doi = {10.1140/epja/i2015-15143-7}
}
|
| Bączyk P, Czerwiński M, Korgul A, Rząca-Urban T, Urban W, Blanc A,
Jentschel M, Mutti P, Köster U, Soldner T, De France G, Simpson G
and Ur C (2015), "High precision γ spectroscopy of 69,71Zn from (n, γ) reactions using EXILL", EPJ Web of Conferences. Vol. 93 |
| Abstract: Measurement of γ radiation following slow neutron capture on 68Zn and 70Zn using very efficient germanium array EXILL was done at Institute Laue-Langevin in Grenoble. New spectroscopic information for 69Zn (including doorway state) and first results for 71Zn (accurate energy of β decaying isomer) were obtained. Binding energies for 68Zn, 69Zn and 71Zn were determined with 5-to-70 times higher accuracy than presented in the literature. Owned by the authors, published by EDP Sciences, 2015. |
BibTeX:
@conference{Bączyk2015,
author = {Bączyk, P. and Czerwiński, M. and Korgul, A. and Rząca-Urban, T. and Urban, W. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G. and Ur, C.A.},
editor = {Zuber K. and Schwengner R.},
title = {High precision γ spectroscopy of 69,71Zn from (n, γ) reactions using EXILL},
journal = {EPJ Web of Conferences},
year = {2015},
volume = {93},
note = {Cited by: 2; All Open Access, Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960407291&doi=10.1051%2fepjconf%2f20159301042&partnerID=40&md5=20a2095e67ce4b32ce47e81961953ce3},
doi = {10.1051/epjconf/20159301042}
}
|
| Bączyk P, Urban W, Złotowska D, Czerwiński M, Rzaca-Urban T, Blanc
A, Jentschel M, Mutti P, Köster U, Soldner T, De France G, Simpson G
and Ur C (2015), "Near-yrast excitations in nucleus 83As: Tracing the πg9/2 orbital in the 78Ni region", Physical Review C - Nuclear Physics. Vol. 91(4) |
| Abstract: The nucleus As83, populated in the neutron-induced fission of U235 was studied via prompt γ-ray spectroscopy using the EXILL Ge array at the cold-neutron beam PF1B of ILL Grenoble. The level scheme is reviewed. The 2779.0-keV level is tentatively assigned spin (9/2+) as the πg9/2 excitation, based on systematics and available shell-model calculations. © 2015 American Physical Society. |
BibTeX:
@article{Baczyk2015,
author = {Baczyk, P. and Urban, W. and Złotowska, D. and Czerwiński, M. and Rzaca-Urban, T. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G. and Ur, C.A.},
title = {Near-yrast excitations in nucleus As 83: Tracing the πg9/2 orbital in the Ni 78 region},
journal = {Physical Review C - Nuclear Physics},
year = {2015},
volume = {91},
number = {4},
note = {Cited by: 13},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928914624&doi=10.1103%2fPhysRevC.91.047302&partnerID=40&md5=c09381a1f3f9835ee0ad24261a61fbb3},
doi = {10.1103/PhysRevC.91.047302}
}
|
| Berzinš J, Krasta T, Simonova L, Jentschel M and Urban W (2015), "Levels of 186Re populated in thermal neutron capture reaction", EPJ Web of Conferences. Vol. 93 |
| Abstract: Levels of 186Re have been studied in the thermal neutron capture reaction with an enriched 185Re target. Evaluation of spectrum measured with GAMS5 allowed to obtain energies and intensities of more than 500 γ-lines assigned to 186Re. Most of the obtained transitions have been placed in the model-independent level scheme of the doubly odd 186Re nucleus, taking into account the available data of earlier experiments as well as the results of recent 187Re(p, d)186Re reaction measurements. Structure of the 186Re low-lying levels has been analysed in terms of the particle-plus-rotor coupling model. Owned by the authors, published by EDP Sciences, 2015. |
BibTeX:
@conference{Berzinš2015,
author = {Berzinš, J. and Krasta, T. and Simonova, L. and Jentschel, M. and Urban, W.},
editor = {Zuber K. and Schwengner R.},
title = {Levels of 186Re populated in thermal neutron capture reaction},
journal = {EPJ Web of Conferences},
year = {2015},
volume = {93},
note = {Cited by: 2; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960427161&doi=10.1051%2fepjconf%2f20159301045&partnerID=40&md5=38c7a09c964a223c8c5f4857b56da9d8},
doi = {10.1051/epjconf/20159301045}
}
|
| Blanc A, Chebboubi A, De France G, Drouet F, Faust H, Jentschel M,
Kessedjian G, Köster U, Leoni S, Materna T, Mutti P, Panebianco S,
Sage C, Simpson G, Soldner T, Ur C, Urban W and Vancraeyenest A
(2015), "From EXILL (EXogam at the ILL) to FIPPS (FIssion Product Prompt γ-ray Spectrometer)", EPJ Web of Conferences. Vol. 93 |
| Abstract: Within the EXILL campaign a large and efficient cluster of Ge-detectors was installed around a very well collimated neutron beam. This has allowed to carry out rather complete spectroscopic studies close to the line of stability using the (n,γ) reaction. Neutron rich isotopes were produced by neutron induced fission and prompt spectroscopy was carried out. The isotope selection in this setup was based on a partially known level scheme and the use of triple coincidences. The latter is limiting the statistical sensitivity in the case of weak production yields. Based on the experiences of these campaigns we are currently developing a new setup: FIPPS (FIssion Product Prompt Spectroscopy). This setup combines a collimated neutron beam, a highly efficient cluster of Ge detectors, a gas filled magnet and auxiliary detectors. The presence of the gas filled magnet will allow us to identify fission products directly and should give access to a new quality of studies if compared to the EXILL campaign. The EXILL campaign and the FIPPS project are presented. Owned by the authors, published by EDP Sciences, 2015. |
BibTeX:
@conference{Blanc2015,
author = {Blanc, A. and Chebboubi, A. and De France, G. and Drouet, F. and Faust, H. and Jentschel, M. and Kessedjian, G. and Köster, U. and Leoni, S. and Materna, T. and Mutti, P. and Panebianco, S. and Sage, C. and Simpson, G. and Soldner, T. and Ur, C.A. and Urban, W. and Vancraeyenest, A.},
editor = {Zuber K. and Schwengner R.},
title = {From EXILL (EXogam at the ILL) to FIPPS (FIssion Product Prompt γ-ray Spectrometer)},
journal = {EPJ Web of Conferences},
year = {2015},
volume = {93},
note = {Cited by: 10; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960432008&doi=10.1051%2fepjconf%2f20159301015&partnerID=40&md5=eee79e4b3d6b03c32e9071c7bc618c0b},
doi = {10.1051/epjconf/20159301015}
}
|
| Chatterji T, Kumar C and Wdowik UD (2015), "Anomalous temperature-induced volume contraction in GeTe", Physical Review B - Condensed Matter and Materials Physics. Vol. 91(5) |
| Abstract: The recent surge of interest in phase-change materials GeTe, Ge2Sb2Te5, and related compounds motivated us to revisit the structural phase transition in GeTe in more detail than was done before. The rhombohedral-to-cubic ferroelectric phase transition in GeTe has been studied using high-resolution neutron powder diffraction on a spallation neutron source. We determined the temperature dependence of the structural parameters in a wide temperature range extending from 309 to 973 K. The results of our studies clearly show an anomalous volume contraction of 0.6% at the phase transition from the rhombohedral-to-cubic phase. In order to better understand the phase transition and the associated anomalous volume decrease in GeTe, we have performed phonon calculations based on the density functional theory. Results of the present investigations are also discussed with respect to the experimental data obtained for single crystals of GeTe. © 2015 American Physical Society. |
BibTeX:
@article{Chatterji2015,
author = {Chatterji, Tapan and Kumar, C.M.N. and Wdowik, Urszula D.},
title = {Anomalous temperature-induced volume contraction in GeTe},
journal = {Physical Review B - Condensed Matter and Materials Physics},
year = {2015},
volume = {91},
number = {5},
note = {Cited by: 43; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924050271&doi=10.1103%2fPhysRevB.91.054110&partnerID=40&md5=af8a152da659b44d4a16b8fba56f8949},
doi = {10.1103/PhysRevB.91.054110}
}
|
| Cieplicka-Oryńczak N, Fornal B, Leoni S, Bazzacco D, Blanc A,
Bocchi G, Bottoni S, De France G, Jentschel M, Köster U, Mutti P,
Simpson G, Soldner T, Szpak B, Ur C and Urban W (2015), "Excitations of one-valence-proton, one-valence-neutron nucleus 210Bi from cold-neutron capture", AIP Conference Proceedings. Vol. 1681 |
| Abstract: The low-spin structure of one-proton, one-neutron 210Bi nucleus was investigated in cold-neutron capture reaction on 209Bi. The γ-coincidence measurements were performed with use of EXILL array consisted of 16 HPGe detectors. The experimental results were compared to shell-model calculations involving valence particles excitations. The 210Bi nucleus offers the potential to test the effective proton-neutron interactions because most of the states should arise from the proton-neutron excitations. Additionally, it was discovered that a few states should come from the couplings of valence particles to the 3- octupole vibration in 208Pb which provides also the possibility of testing the calculations involving the core excitations. © 2015 AIP Publishing LLC. |
BibTeX:
@conference{Cieplicka-Oryńczak2015,
author = {Cieplicka-Oryńczak, N. and Fornal, B. and Leoni, S. and Bazzacco, D. and Blanc, A. and Bocchi, G. and Bottoni, S. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Simpson, G. and Soldner, T. and Szpak, B. and Ur, C. and Urban, W.},
editor = {Lipoglavsek M. and Milin M. and Niksic T. and Szilner S. and Vretenar D.},
title = {Excitations of one-valence-proton, one-valence-neutron nucleus 210Bi from cold-neutron capture},
journal = {AIP Conference Proceedings},
year = {2015},
volume = {1681},
note = {Cited by: 0},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006208451&doi=10.1063%2f1.4932297&partnerID=40&md5=98fd6d2700dfdbde82b1b6cc44d094fe},
doi = {10.1063/1.4932297}
}
|
| Czerwiński M, Rząca-Urban T, Urban W, Bączyk P, Sieja K, Nyakó B,
Timár J, Kuti I, Tornyi T, Atanasova L, Blanc A, Jentschel M, Mutti
P, Köster U, Soldner T, De France G, Simpson G and Ur C (2015), "Neutron-proton multiplets in the nucleus 88Br", Physical Review C - Nuclear Physics. Vol. 92(1) |
| Abstract: Medium spin excited levels in Br88 populated in fission of U235 induced by neutrons have been observed for the first time. The measurement of γ radiation following fission has been performed using the EXILL array of Ge detectors at the cold-neutron beam facility PF1B of the Institut Laue-Langevin (ILL), Grenoble. The ground state of Br88 is proposed to be 1-, changing the adopted (2-) value. The low-energy, newly observed levels are members of the πp3/2ν(d5/2)3 and πf5/2-1ν(d5/2)3 multiplets. A triplet of yrast levels observed at around 2 MeV is interpreted as being due to coupling of the g9/2 proton to the (d5/2)3, seniority 3 multiplet, supporting the presence of collective effects in Br88. The position of the g9/2 proton intruder in the Ni78 core is determined at 5.7 MeV above the f5/2 proton level. Shell-model calculations predict the same proton-neutron excitations proposed in Br88. © 2015 American Physical Society. |
BibTeX:
@article{Czerwiński2015,
author = {Czerwiński, M. and Rząca-Urban, T. and Urban, W. and Bączyk, P. and Sieja, K. and Nyakó, B.M. and Timár, J. and Kuti, I. and Tornyi, T.G. and Atanasova, L. and Blanc, A. and Jentschel, M. and Mutti, P. and Köster, U. and Soldner, T. and De France, G. and Simpson, G.S. and Ur, C.A.},
title = {Neutron-proton multiplets in the nucleus Br 88},
journal = {Physical Review C - Nuclear Physics},
year = {2015},
volume = {92},
number = {1},
note = {Cited by: 23},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938900425&doi=10.1103%2fPhysRevC.92.014328&partnerID=40&md5=199831d38a3ce7f324d52ae07f8ac25c},
doi = {10.1103/PhysRevC.92.014328}
}
|
| De_France G, Blanc A, Drouet F, Jentschel M, Köster U, Mutti P,
Régis J, Simpson G, Soldner T, Stezowski O, Leoni S, Urban W and
Vancrayenest A (2015), "The EXILL campaign", Pramana - Journal of Physics. Vol. 85(3), pp. 467 – 472. |
| Abstract: A combination of germanium detectors was installed at the PF1B neutron guide of the ILL to perform prompt spectroscopy of neutron-rich nuclei produced in the neutron-capture induced-fission of 235U and 241Pu. In addition, LaBr3 detectors from the FATIMA Collaboration were installed to complement with the EXOGAM clovers to measure lifetimes of low-lying excited states. The measured characteristics and online spectra indicate very good performances of the overall set-up. © Indian Academy of Sciences. |
BibTeX:
@article{De_France2015467,
author = {De_France, G. and Blanc, A. and Drouet, F. and Jentschel, M. and Köster, U. and Mutti, P. and Régis, J.M. and Simpson, G. and Soldner, T. and Stezowski, O. and Leoni, S. and Urban, W. and Vancrayenest, A.},
title = {The EXILL campaign},
journal = {Pramana - Journal of Physics},
year = {2015},
volume = {85},
number = {3},
pages = {467 – 472},
note = {Cited by: 2},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84941554097&doi=10.1007%2fs12043-015-1065-x&partnerID=40&md5=644017a7555ae7397ba4fd47a4595c34},
doi = {10.1007/s12043-015-1065-x}
}
|
| Jolie J, Régis J-M, Wilmsen D, Ahmed S, Pfeiffer M, Saed-Samii N,
Warr N, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson
G, De France G, Urban W, Drouet F, Vancraeyenest A, Baczyk P,
Czerwinski M, Korgul A, Mazzocchi C, Rzaca-Urban T, Bruce A, Roberts
O, Fraile L, Mach H, Paziy V, Ignatov A, Ilieva S, Kröll T, Scheck
M, Thürauf M, Ivanova D, Kisyov S, Lalkovski S, Podolyák Z, Regan P,
Korten W, Zielinska M, Salsac M, Habs D, Thirolf P, Ur C, Bernards
C, Casten R, Cooper N, Werner V, Cakirli R, Leoni S, Benzoni G,
Bocchi G, Bottoni S, Crespi F, Fornal B, Cieplicka N, Szpak B,
Petrache C, Leguillon R, John R, Lorenz C, Massarczyk R, Schwengner
R, Curien D, Lozeva R, Sengele L, Marginean N and Lica R (2015), "The (n,γ) campaigns at EXILL", EPJ Web of Conferences. Vol. 93 |
| Abstract: At the PF1B cold neutron beam line at the Institut Laue Langevin, the EXILL array consisting of EXOGAM, GASP and ILL-Clover detectors was used to perform (n,γ) measurements at very high coincidence rates. About ten different reactions were measured in autumn 2012 using a highly collimated cold neutron beam. In spring 2013, the EXOGAM array was combined with 16 LaBr3(Ce) scintillators in the EXILL&FATIMA campaign for the measurement of lifetimes using the generalised centroid difference method. We report on the properties of the set-ups and present first results from both campaigns. Owned by the authors, published by EDP Sciences, 2015. |
BibTeX:
@conference{Jolie2015,
author = {Jolie, J. and Régis, J.-M. and Wilmsen, D. and Ahmed, S. and Pfeiffer, M. and Saed-Samii, N. and Warr, N. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G. and De France, G. and Urban, W. and Drouet, F. and Vancraeyenest, A. and Baczyk, P. and Czerwinski, M. and Korgul, A. and Mazzocchi, C. and Rzaca-Urban, T. and Bruce, A. and Roberts, O.J. and Fraile, L.M. and Mach, H. and Paziy, V. and Ignatov, A. and Ilieva, S. and Kröll, Th. and Scheck, M. and Thürauf, M. and Ivanova, D. and Kisyov, S. and Lalkovski, S. and Podolyák, Zs. and Regan, P.H. and Korten, W. and Zielinska, M. and Salsac, M.D. and Habs, D. and Thirolf, P.G. and Ur, C.A. and Bernards, C. and Casten, R.F. and Cooper, N. and Werner, V. and Cakirli, R.B. and Leoni, S. and Benzoni, G. and Bocchi, G. and Bottoni, S. and Crespi, F.C.L. and Fornal, B. and Cieplicka, N. and Szpak, B. and Petrache, C.M. and Leguillon, R. and John, R. and Lorenz, C. and Massarczyk, R. and Schwengner, R. and Curien, D. and Lozeva, R. and Sengele, L. and Marginean, N. and Lica, R.},
editor = {Zuber K. and Schwengner R.},
title = {The (n,γ) campaigns at EXILL},
journal = {EPJ Web of Conferences},
year = {2015},
volume = {93},
note = {Cited by: 4; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960426192&doi=10.1051%2fepjconf%2f20159301014&partnerID=40&md5=93f96d21e994e2ecc5c0f50c63460419},
doi = {10.1051/epjconf/20159301014}
}
|
| Jolie J, Régis J-M, Wilmsen D, Saed-Samii N, Pfeiffer M, Warr N,
Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, De
France G, Urban W, Drouet F, Vancraeyenest A, Bruce A, Roberts O,
Fraile L, Paziy V, Ignatov A, Kröll T, Ivanova D, Kisyov S,
Lalkovski S, Podolyak Z, Regan P, Wilson E, Korten W, Ur C, Lica R
and Marginean N (2015), "Test of the SO(6) selection rule in 196Pt using cold-neutron capture", Nuclear Physics A. Vol. 934, pp. 1 – 7. |
| Abstract: At the PF1B cold-neutron beam line of the Institut Laue Langevin, the EXILL&FATIMA array, consisting of EXOGAM Ge detectors and fast LaBr3(Ce) scintillators, was used to perform fast electronic timing measurements after the 195Pt(n,γ) reaction using a highly collimated cold-neutron beam. An upper lifetime limit was obtained for the third 0+ state in 196Pt. As this state is the lowest state of the σ=N-2 set of SO(6) states, the selection rule which forbids E2 transitions to the lower lying σ=N could be tested. © 2014 Elsevier B.V. |
BibTeX:
@article{Jolie20151,
author = {Jolie, J. and Régis, J.-M. and Wilmsen, D. and Saed-Samii, N. and Pfeiffer, M. and Warr, N. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G.S. and De France, G. and Urban, W. and Drouet, F. and Vancraeyenest, A. and Bruce, A.M. and Roberts, O.J. and Fraile, L.M. and Paziy, V. and Ignatov, A. and Kröll, Th. and Ivanova, D. and Kisyov, S. and Lalkovski, S. and Podolyak, Zs. and Regan, P.H. and Wilson, E. and Korten, W. and Ur, C.A. and Lica, R. and Marginean, N.},
title = {Test of the SO(6) selection rule in 196Pt using cold-neutron capture},
journal = {Nuclear Physics A},
year = {2015},
volume = {934},
pages = {1 – 7},
note = {Cited by: 10},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84913593358&doi=10.1016%2fj.nuclphysa.2014.11.008&partnerID=40&md5=6216cc76683d22438a02c8a83c23a083},
doi = {10.1016/j.nuclphysa.2014.11.008}
}
|
| Lorenz C, John R, Massarczyk R, Schwengner R, Blanc A, De France G, Jentschel M, Köster U, Mutti P, Simpson G, Soldner T, Urban W, Valenta S and Belgya T (2015), "Neutron-capture experiment on 77Se with EXILL at ILL Grenoble", EPJ Web of Conferences. Vol. 93 |
| Abstract: The neutron capture reaction at 77Se has been studied with cold neutrons in the course of the EXILL campaign at the high-flux reactor of the Institut Laue-Langevin Grenoble. A simulation of the detector array with Geant4 has been accomplished and evaluated. The detector response has been deduced and measured spectra were unfolded, which have been compared with simulations using γDex to determine strength functions. © Owned by the authors, published by EDP Sciences, 2015. |
BibTeX:
@conference{Lorenz2015,
author = {Lorenz, Ch. and John, R. and Massarczyk, R. and Schwengner, R. and Blanc, A. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Simpson, G. and Soldner, T. and Urban, W. and Valenta, S. and Belgya, T.},
editor = {Zuber K. and Schwengner R.},
title = {Neutron-capture experiment on 77Se with EXILL at ILL Grenoble},
journal = {EPJ Web of Conferences},
year = {2015},
volume = {93},
note = {Cited by: 1; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960329284&doi=10.1051%2fepjconf%2f20159301050&partnerID=40&md5=53204f3558cbf8fa5a261d316f731e5a},
doi = {10.1051/epjconf/20159301050}
}
|
| Materna T, Urban W, Sieja K, Köster U, Faust H, Czerwiński M,
Rzaca-Urban T, Bernards C, Fransen C, Jolie J, Regis J-M, Thomas T
and Warr N (2015), "Low spin structure of 86Se : Confirmation of γ collectivity at N = 52", Physical Review C - Nuclear Physics. Vol. 92(3) |
| Abstract: The Se86 nucleus has been investigated by γ-ray spectroscopy using an array of Ge detectors placed at the exit of the fission-fragment mass separator Lohengrin of the Institut Laue-Langevin. New transitions have been identified by studying the β decay of As86. An excitation scheme is proposed and includes a 22+ level at 1399 keV and a possible 3+ level that are well reproduced by shell model calculations with the most recent parametrization. The properties of the excitations indicate a possible onset of γ collectivity in Se86. © 2015 American Physical Society. |
BibTeX:
@article{Materna2015,
author = {Materna, T. and Urban, W. and Sieja, K. and Köster, U. and Faust, H. and Czerwiński, M. and Rzaca-Urban, T. and Bernards, C. and Fransen, C. and Jolie, J. and Regis, J.-M. and Thomas, T. and Warr, N.},
title = {Low spin structure of Se 86: Confirmation of γ collectivity at N=52},
journal = {Physical Review C - Nuclear Physics},
year = {2015},
volume = {92},
number = {3},
note = {Cited by: 26},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942358032&doi=10.1103%2fPhysRevC.92.034305&partnerID=40&md5=e78f30c01a43b7c77e808de49975296a},
doi = {10.1103/PhysRevC.92.034305}
}
|
| Pendlebury J, Afach S, Ayres N, Baker C, Ban G, Bison G, Bodek K,
Burghoff M, Geltenbort P, Green K, Griffith W, Van Der Grinten M,
Grujić Z, Harris P, Hélaine V, Iaydjiev P, Ivanov S, Kasprzak M,
Kermaidic Y, Kirch K, Koch H-C, Komposch S, Kozela A, Krempel J,
Lauss B, Lefort T, Lemière Y, May D, Musgrave M, Naviliat-Cuncic O,
Piegsa F, Pignol G, Prashanth P, Quéméner G, Rawlik M, Rebreyend D,
Richardson J, Ries D, Roccia S, Rozpedzik D, Schnabel A,
Schmidt-Wellenburg P, Severijns N, Shiers D, Thorne J, Weis A,
Winston O, Wursten E, Zejma J and Zsigmond G (2015), "Revised experimental upper limit on the electric dipole moment of the neutron", Physical Review D - Particles, Fields, Gravitation and Cosmology. Vol. 92(9) |
| Abstract: We present for the first time a detailed and comprehensive analysis of the experimental results that set the current world sensitivity limit on the magnitude of the electric dipole moment (EDM) of the neutron. We have extended and enhanced our earlier analysis to include recent developments in the understanding of the effects of gravity in depolarizing ultracold neutrons; an improved calculation of the spectrum of the neutrons; and conservative estimates of other possible systematic errors, which are also shown to be consistent with more recent measurements undertaken with the apparatus. We obtain a net result of dn=-0.21±1.82×10-26 e cm, which may be interpreted as a slightly revised upper limit on the magnitude of the EDM of 3.0×10-26 e cm (90% C.L.) or 3.6×10-26 e cm (95% C.L.). © 2015 American Physical Society. |
BibTeX:
@article{Pendlebury2015,
author = {Pendlebury, J.M. and Afach, S. and Ayres, N.J. and Baker, C.A. and Ban, G. and Bison, G. and Bodek, K. and Burghoff, M. and Geltenbort, P. and Green, K. and Griffith, W.C. and Van Der Grinten, M. and Grujić, Z.D. and Harris, P.G. and Hélaine, V. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaidic, Y. and Kirch, K. and Koch, H.-C. and Komposch, S. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and May, D.J.R. and Musgrave, M. and Naviliat-Cuncic, O. and Piegsa, F.M. and Pignol, G. and Prashanth, P.N. and Quéméner, G. and Rawlik, M. and Rebreyend, D. and Richardson, J.D. and Ries, D. and Roccia, S. and Rozpedzik, D. and Schnabel, A. and Schmidt-Wellenburg, P. and Severijns, N. and Shiers, D. and Thorne, J.A. and Weis, A. and Winston, O.J. and Wursten, E. and Zejma, J. and Zsigmond, G.},
title = {Revised experimental upper limit on the electric dipole moment of the neutron},
journal = {Physical Review D - Particles, Fields, Gravitation and Cosmology},
year = {2015},
volume = {92},
number = {9},
note = {Cited by: 316; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947104560&doi=10.1103%2fPhysRevD.92.092003&partnerID=40&md5=e186e157ca096976782b3e7e1b52816d},
doi = {10.1103/PhysRevD.92.092003}
}
|
| Régis J-M, Jolie J, Mach H, Simpson G, Blazhev A, Pascovici G,
Pfeiffer M, Rudigier M, Saed-Samii N, Warr N, Blanc A, De France G,
Jentschel M, Köster U, Mutti P, Soldner T, Ur C, Urban W, Bruce A,
Drouet F, Fraile L, Ilieva S, Korten W, Kröll T, Lalkovski S,
Mərginean N, Paziy V, Podolyák Z, Regan P, Stezowski O and
Vancraeyenest A (2015), "The Generalized Centroid Difference method for lifetime measurements via γ-γ Coincidences using large fast-timing arrays", EPJ Web of Conferences. Vol. 93 |
| Abstract: A novel method for direct electronic "fast-timing" lifetime measurements of nuclear excited states via γ-γ coincidences using an array equipped with N very fast high-resolution LaBr3(Ce) scintillator detectors is presented. The generalized centroid difference method provides two independent "start" and "stop" time spectra obtained without any correction by a superposition of the N(N - 1)/2 calibrated γ-γ time difference spectra of the N detector fast-timing system. The two fast-timing array time spectra correspond to a forward and reverse gating of a specific γ-γ cascade and the centroid difference as the time shift between the centroids of the two time spectra provides a picosecond-sensitive mirror-symmetric observable of the set-up. The energydependent mean prompt response difference between the start and stop events is calibrated and used as a single correction for lifetime determination. These combined fast-timing array mean γ-γ zero-time responses can be determined for 40 keV < Eγ < 1.4 MeV with a precision better than 10 ps using a 152Eu γ-ray source. The new method is described with examples of (n,γ) and (n,f,γ) experiments performed at the intense cold-neutron beam facility PF1B of the Institut Laue-Langevin in Grenoble, France, using 16 LaBr3(Ce) detectors within the EXILL&FATIMA campaign in 2013. The results are discussed with respect to possible systematic errors induced by background contributions. Owned by the authors, published by EDP Sciences, 2015. |
BibTeX:
@conference{Régis2015,
author = {Régis, J.-M. and Jolie, J. and Mach, H. and Simpson, G.S. and Blazhev, A. and Pascovici, G. and Pfeiffer, M. and Rudigier, M. and Saed-Samii, N. and Warr, N. and Blanc, A. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Ur, C.A. and Urban, W. and Bruce, A.M. and Drouet, F. and Fraile, L.M. and Ilieva, S. and Korten, W. and Kröll, T. and Lalkovski, S. and Mərginean, N. and Paziy, V. and Podolyák, Zs. and Regan, P.H. and Stezowski, O. and Vancraeyenest, A.},
editor = {Zuber K. and Schwengner R.},
title = {The Generalized Centroid Difference method for lifetime measurements via γ-γ Coincidences using large fast-timing arrays},
journal = {EPJ Web of Conferences},
year = {2015},
volume = {93},
note = {Cited by: 3; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960331120&doi=10.1051%2fepjconf%2f20159301013&partnerID=40&md5=fadb9936c633f6559cd223be38b0e153},
doi = {10.1051/epjconf/20159301013}
}
|
| Tsinganis A, Stamatopoulos A, Colonna N, Vlastou R, Schillebeeckx
P, Plompen A, Heyse J, Kokkoris M, Barbagallo M, Berthoumieux E,
Wright T and Žugec P (2015), "Measurement of the 240Pu(n,f) cross-section at the CERN n-TOF facility: First results from EAR-2", In Proc. 14th Int. Conf. Nucl. React. Mech. NRM 2015. , pp. 23-28. |
| Abstract: The accurate knowledge of neutron cross-sections of a variety of plutonium isotopes and other minor actinides, such as neptunium, americium and curium, is crucial for feasibility and performance studies of advanced nuclear systems (Generation-IV reactors, Accelerator Driven Systems). In this context, the 240Pu(n,f) cross-section was measured with the time-of-flight technique at the CERN n-TOF facility at incident neutron energies ranging from thermal to several MeV. The present measurement is the first to have been performed at n-TOF's newly commissioned Experimental Area II (EAR-2), which is located at the end of an 18 m neutron beam-line and features a neutron fluence that is 25-30 times higher with respect to the existing 185 m flight-path (EAR-1), as well as stronger suppression of sample-induced backgrounds, due to the shorter times-of-flight involved. Preliminary results are presented. |
BibTeX:
@inproceedings{Tsinganis2015,
author = {Tsinganis, A. and Stamatopoulos, A. and Colonna, N. and Vlastou, R. and Schillebeeckx, P. and Plompen, A. and Heyse, J. and Kokkoris, M. and Barbagallo, M. and Berthoumieux, E. and Wright, T. and Žugec, P.},
title = {Measurement of the 240Pu(n,f) cross-section at the CERN n-TOF facility: First results from EAR-2},
booktitle = {Proc. 14th Int. Conf. Nucl. React. Mech. NRM 2015},
year = {2015},
pages = {23--28}
}
|
| Afach S, Baker C, Ban G, Bison G, Bodek K, Burghoff M, Chowdhuri
Z, Daum M, Fertl M, Franke B, Geltenbort P, Green K, van der Grinten
M, Grujic Z, Harris P, Heil W, Hélaine V, Henneck R, Horras M,
Iaydjiev P, Ivanov S, Kasprzak M, Kermaïdic Y, Kirch K, Knecht A,
Koch H-C, Krempel J, Kuźniak M, Lauss B, Lefort T, Lemière Y,
Mtchedlishvili A, Naviliat-Cuncic O, Pendlebury J, Perkowski M,
Pierre E, Piegsa F, Pignol G, Prashanth P, Quéméner G, Rebreyend D,
Ries D, Roccia S, Schmidt-Wellenburg P, Schnabel A, Severijns N,
Shiers D, Smith K, Voigt J, Weis A, Wyszynski G, Zejma J, Zenner J
and Zsigmond G (2014), "A measurement of the neutron to 199Hg magnetic moment ratio", Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Vol. 739, pp. 128 – 132. |
| Abstract: The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result γn/γHg=3.8424574(30). © 2014 . |
BibTeX:
@article{Afach2014128,
author = {Afach, S. and Baker, C.A. and Ban, G. and Bison, G. and Bodek, K. and Burghoff, M. and Chowdhuri, Z. and Daum, M. and Fertl, M. and Franke, B. and Geltenbort, P. and Green, K. and van der Grinten, M.G.D. and Grujic, Z. and Harris, P.G. and Heil, W. and Hélaine, V. and Henneck, R. and Horras, M. and Iaydjiev, P. and Ivanov, S.N. and Kasprzak, M. and Kermaïdic, Y. and Kirch, K. and Knecht, A. and Koch, H.-C. and Krempel, J. and Kuźniak, M. and Lauss, B. and Lefort, T. and Lemière, Y. and Mtchedlishvili, A. and Naviliat-Cuncic, O. and Pendlebury, J.M. and Perkowski, M. and Pierre, E. and Piegsa, F.M. and Pignol, G. and Prashanth, P.N. and Quéméner, G. and Rebreyend, D. and Ries, D. and Roccia, S. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Shiers, D. and Smith, K.F. and Voigt, J. and Weis, A. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {A measurement of the neutron to 199Hg magnetic moment ratio},
journal = {Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics},
year = {2014},
volume = {739},
pages = {128 – 132},
note = {Cited by: 28; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908635216&doi=10.1016%2fj.physletb.2014.10.046&partnerID=40&md5=565377ef4eac21e72349ed54349ad73f},
doi = {10.1016/j.physletb.2014.10.046}
}
|
| Afach S, Bison G, Bodek K, Burri F, Chowdhuri Z, Daum M, Fertl M,
Franke B, Grujic Z, Hélaine V, Henneck R, Kasprzak M, Kirch K, Koch
H-C, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Meier M,
Naviliat-Cuncic O, Piegsa F, Pignol G, Plonka-Spehr C, Prashanth P,
Quéméner G, Rebreyend D, Roccia S, Schmidt-Wellenburg P, Schnabel A,
Severijns N, Voigt J, Weis A, Wyszynski G, Zejma J, Zenner J and
Zsigmond G (2014), "Dynamic stabilization of the magnetic field surrounding the neutron electric dipole moment spectrometer at the Paul Scherrer Institute", Journal of Applied Physics. Vol. 116(8) |
| Abstract: The Surrounding Field Compensation (SFC) system described in this work is installed around the four-layer Mu-metal magnetic shield of the neutron electric dipole moment spectrometer located at the Paul Scherrer Institute. The SFC system reduces the DC component of the external magnetic field by a factor of about 20. Within a control volume of approximately 2.5m×2.5m×3m, disturbances of the magnetic field are attenuated by factors of 5-50 at a bandwidth from 10 - 3 Hz up to 0.5Hz, which corresponds to integration times longer than several hundreds of seconds and represent the important timescale for the neutron electric dipole moment measurement. These shielding factors apply to random environmental noise from arbitrary sources. This is achieved via a proportional-integral feedback stabilization system that includes a regularized pseudoinverse matrix of proportionality factors which correlates magnetic field changes at all sensor positions to current changes in the SFC coils. © 2014 AIP Publishing LLC. |
BibTeX:
@article{Afach2014,
author = {Afach, S. and Bison, G. and Bodek, K. and Burri, F. and Chowdhuri, Z. and Daum, M. and Fertl, M. and Franke, B. and Grujic, Z. and Hélaine, V. and Henneck, R. and Kasprzak, M. and Kirch, K. and Koch, H.-C. and Kozela, A. and Krempel, J. and Lauss, B. and Lefort, T. and Lemière, Y. and Meier, M. and Naviliat-Cuncic, O. and Piegsa, F.M. and Pignol, G. and Plonka-Spehr, C. and Prashanth, P.N. and Quéméner, G. and Rebreyend, D. and Roccia, S. and Schmidt-Wellenburg, P. and Schnabel, A. and Severijns, N. and Voigt, J. and Weis, A. and Wyszynski, G. and Zejma, J. and Zenner, J. and Zsigmond, G.},
title = {Dynamic stabilization of the magnetic field surrounding the neutron electric dipole moment spectrometer at the Paul Scherrer Institute},
journal = {Journal of Applied Physics},
year = {2014},
volume = {116},
number = {8},
note = {Cited by: 42; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906878015&doi=10.1063%2f1.4894158&partnerID=40&md5=b0a49470dd3380e0540252a923ee232b},
doi = {10.1063/1.4894158}
}
|
| De_France G, Blanc A, Drouet F, Jentschel M, Köster U, Mutti P,
Régis J, Simpson G, Soldner T, Stezowski O, Ur C, Urban W and
Vancrayenest A (2014), "Spectroscopy of neutron rich nuclei using cold neutron induced fission of actinide targets at the ILL: The EXILL campaign", EPJ Web of Conferences. Vol. 66 |
| Abstract: A combination of germanium detectors has been installed at the PF1B neutron guide of the ILL to perform the prompt spectroscopy of neutron-rich nuclei produced in the neutron-capture induced-fission of 235U and 241Pu. In addition LaBr3 detectors from the FATIMA collaboration have been installed in complement with the EXOGAM clovers to measure lifetimes of low-lying excited states. The measured characteristics and online spectra indicate very good performances of the overall setup. © Owned by the authors, published by EDP Sciences, 2014. |
BibTeX:
@conference{De_France2014,
author = {De_France, G. and Blanc, A. and Drouet, F. and Jentschel, M. and Köster, U. and Mutti, P. and Régis, J.M. and Simpson, G. and Soldner, T. and Stezowski, O. and Ur, C.A. and Urban, W. and Vancrayenest, A.},
title = {Spectroscopy of neutron rich nuclei using cold neutron induced fission of actinide targets at the ILL: The EXILL campaign},
journal = {EPJ Web of Conferences},
year = {2014},
volume = {66},
note = {Cited by: 12; All Open Access, Gold Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898720969&doi=10.1051%2fepjconf%2f20146602010&partnerID=40&md5=449c32bd0899ae61b6dee9b80e82c9bd},
doi = {10.1051/epjconf/20146602010}
}
|
| Ghys L, Andreyev A, Huyse M, Van Duppen P, Sels S, Andel B,
Antalic S, Barzakh A, Capponi L, Cocolios T, Derkx X, De Witte H,
Elseviers J, Fedorov D, Fedosseev V, Hessberger F, Kalaninová Z,
Köster U, Lane J, Liberati V, Lynch K, Marsh B, Mitsuoka S, Möller
P, Nagame Y, Nishio K, Ota S, Pauwels D, Page R, Popescu L, Radulov
D, Rajabali M, Randrup J, Rapisarda E, Rothe S, Sandhu K,
Seliverstov M, Sjödin A, Truesdale V, Van Beveren C, Van Den Bergh
P, Wakabayashi Y and Warda M (2014), "Evolution of fission-fragment mass distributions in the neutron-deficient lead region", Physical Review C - Nuclear Physics. Vol. 90(4) |
| Abstract: Low-energy β-delayed fission of At194,196 and Fr200,202 was studied in detail at the mass separator ISOLDE at CERN. The fission-fragment mass distributions of daughter nuclei Po194,196 and Rn202 indicate a triple-humped structure, marking the transition between asymmetric fission of Hg178,180 and symmetric fission in the light Ra-Rn nuclei. Comparison with the macroscopic-microscopic finite-range liquid-drop model and the self-consistent approach employing the Gogny D1S energy density functional yields discrepancies. This demonstrates once more the need for dynamical fission calculations, because for both models the potential-energy surfaces lack pronounced structures, in contrast to those for the actinide region. © 2014 American Physical Society. |
BibTeX:
@article{Ghys2014,
author = {Ghys, L. and Andreyev, A.N. and Huyse, M. and Van Duppen, P. and Sels, S. and Andel, B. and Antalic, S. and Barzakh, A. and Capponi, L. and Cocolios, T.E. and Derkx, X. and De Witte, H. and Elseviers, J. and Fedorov, D.V. and Fedosseev, V.N. and Hessberger, F.P. and Kalaninová, Z. and Köster, U. and Lane, J.F.W. and Liberati, V. and Lynch, K.M. and Marsh, B.A. and Mitsuoka, S. and Möller, P. and Nagame, Y. and Nishio, K. and Ota, S. and Pauwels, D. and Page, R.D. and Popescu, L. and Radulov, D. and Rajabali, M.M. and Randrup, J. and Rapisarda, E. and Rothe, S. and Sandhu, K. and Seliverstov, M.D. and Sjödin, A.M. and Truesdale, V.L. and Van Beveren, C. and Van Den Bergh, P. and Wakabayashi, Y. and Warda, M.},
title = {Evolution of fission-fragment mass distributions in the neutron-deficient lead region},
journal = {Physical Review C - Nuclear Physics},
year = {2014},
volume = {90},
number = {4},
note = {Cited by: 38; All Open Access, Bronze Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908450891&doi=10.1103%2fPhysRevC.90.041301&partnerID=40&md5=b37e6a3418790abb996d5d8bbf4be1f1},
doi = {10.1103/PhysRevC.90.041301}
}
|
| Jolie J, Régis J-M, Wilmsen D, Ahmed S, Pfeiffer M, Saed-Samii N, Warr N, Blanc A, Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, De France G, Urban W, Bruce A, Roberts O, Fraile L, Paziy V, Ignatov A, Ilieva S, Kröll T, Scheck M, Thürauf M, Ivanova D, Kisyov S, Lalkovski S, Podolyak Z, Regan P, Korten W, Habs D, Thirolf P and Ur C (2014), "First results of the (n,γ) EXILL campaigns at the Institut Laue Langevin using EXOGAM and FATIMA", Journal of Physics: Conference Series. Vol. 533(1) |
| Abstract: At the PF1B cold neutron beam line at the Institut Laue Langevin the EXILL array consisting of EXOGAM, GASP and LOHENGRIN detectors was used to perform (n,γ) measurements under very high coincidence rates. About ten different reactions were then measured in autumn 2012. In spring 2013 the EXOGAM array was combined with 16 LaBr3(Ce) scintillators in the FATIMA@EXILL campaign for the measurement of lifetimes using the generalised centroid difference method. We report on the properties of both set-ups and present first results on Pt isotopes from both campaigns. |
BibTeX:
@conference{Jolie2014,
author = {Jolie, J. and Régis, J.-M. and Wilmsen, D. and Ahmed, S. and Pfeiffer, M. and Saed-Samii, N. and Warr, N. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G. and De France, G. and Urban, W. and Bruce, A.M. and Roberts, O.J. and Fraile, L.M. and Paziy, V. and Ignatov, A. and Ilieva, S. and Kröll, Th. and Scheck, M. and Thürauf, M. and Ivanova, D. and Kisyov, S. and Lalkovski, S. and Podolyak, Zs. and Regan, P.H. and Korten, W. and Habs, D. and Thirolf, P.G. and Ur, C.A.},
editor = {Dimitrova S. and Stoyanov C.},
title = {First results of the (n,γ) EXILL campaigns at the Institut Laue Langevin using EXOGAM and FATIMA},
journal = {Journal of Physics: Conference Series},
year = {2014},
volume = {533},
number = {1},
note = {Cited by: 1; All Open Access, Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907907802&doi=10.1088%2f1742-6596%2f533%2f1%2f012026&partnerID=40&md5=868cef7e6ab8bf8ef520ef493bd9b6ef},
doi = {10.1088/1742-6596/533/1/012026}
}
|
| Kurpeta J, Jokinen A, Penttilä H, Płochocki A, Rissanen J, Urban W
and Äystö J (2014), "Trap-assisted studies of odd, neutron-rich isotopes from Tc to Pd", Hyperfine Interactions. Vol. 223(1-3), pp. 175 – 184. |
| Abstract: We review the present and future of trap-assisted structure studies of odd, neutron-rich Tc, Ru, Rh and Pd isotopes at the limits of present experimental techniques. These nuclei of refractory elements are produced in light-particle induced fission and filtered by their mass number with the IGISOL mass separator. Further mass separation with the JYFLTRAP Penning trap system provides a clean, monoisotopic beam perfectly suited for precise nuclear spectroscopy. Connecting the IGISOL and the JYFLTRAP facilities to the recently installed MCC30/15 cyclotron opens new prospects for post-trap spectroscopy of very exotic, neutron-rich nuclei. © 2012 The Author(s). |
BibTeX:
@article{Kurpeta2014175,
author = {Kurpeta, J. and Jokinen, A. and Penttilä, H. and Płochocki, A. and Rissanen, J. and Urban, W. and Äystö, J.},
title = {Trap-assisted studies of odd, neutron-rich isotopes from Tc to Pd},
journal = {Hyperfine Interactions},
year = {2014},
volume = {223},
number = {1-3},
pages = {175 – 184},
note = {Cited by: 0; All Open Access, Hybrid Gold Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888299980&doi=10.1007%2fs10751-012-0616-5&partnerID=40&md5=d9c769081ad5fcfef03c85989246ca16},
doi = {10.1007/s10751-012-0616-5}
}
|
| Lic R, Mrginean N, Ghi D, Mach H, Fraile L, Simpson G, Aprahamian
A, Bernards C, Briz J, Bucher B, Chiara C, Dlouhý Z, Gheorghe I,
Hoff P, Jolie J, Köster U, Kurcewicz W, Mrginean R, Olaizola B,
Paziy V, Régis J, Rudigier M, Sava T, Stnoiu M, Stroe L and Walters
W (2014), "Low-lying isomeric states in 80Ga from the decay of 80Zn", Physical Review C - Nuclear Physics. Vol. 90(1) |
| Abstract: A new level scheme of Ga80 has been determined. This nucleus was populated following the decay of Zn80 at ISOLDE, CERN. The proposed level scheme is significantly different compared to the previously reported one and contains 26 levels up to 3.4 MeV in excitation energy. The present study establishes that the previously identified 1.9-s -decaying 6 isomer is the ground state of Ga80 and the 1.3-s -decaying 3 isomer lies at an excitation energy of 22.4 keV. A new isomeric level was identified at 707.8 keV and its half-life was measured to be 18.3(5) ns, allowing the 685.4-keV transition de-exciting this state to be assigned an M2 multipolarity. The newly measured spectroscopic observables are compared with shell-model calculations using the jj44bpn and JUN45 interactions. © 2014 American Physical Society. |
BibTeX:
@article{Lic2014,
author = {Lic, R. and Mrginean, N. and Ghi, D.G. and Mach, H. and Fraile, L.M. and Simpson, G.S. and Aprahamian, A. and Bernards, C. and Briz, J.A. and Bucher, B. and Chiara, C.J. and Dlouhý, Z. and Gheorghe, I. and Hoff, P. and Jolie, J. and Köster, U. and Kurcewicz, W. and Mrginean, R. and Olaizola, B. and Paziy, V. and Régis, J.M. and Rudigier, M. and Sava, T. and Stnoiu, M. and Stroe, L. and Walters, W.B.},
title = {Low-lying isomeric states in Ga 80 from the decay of Zn 80},
journal = {Physical Review C - Nuclear Physics},
year = {2014},
volume = {90},
number = {1},
note = {Cited by: 7; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905457994&doi=10.1103%2fPhysRevC.90.014320&partnerID=40&md5=8ec40faa36d3e8d202dbbacc921e91a4},
doi = {10.1103/PhysRevC.90.014320}
}
|
| Régis J-M, Jolie J, Saed-Samii N, Warr N, Pfeiffer M, Blanc A,
Jentschel M, Köster U, Mutti P, Soldner T, Simpson G, Drouet F,
Vancraeyenest A, De France G, Clément E, Stezowski O, Ur C, Urban W,
Regan P, Podolyák Z, Larijani C, Townsley C, Carroll R, Wilson E,
Fraile L, Mach H, Paziy V, Olaizola B, Vedia V, Bruce A, Roberts O,
Smith J, Kröll T, Hartig A-L, Ignatov A, Ilieva S, Thürauf M,
Lalkovski S, Ivanova D, Kisyov S, Korten W, Salsac M-D, Zielińska M,
Mərginean N, Ghitə D, Licə R, Petrache C, Astier A and Leguillon R
(2014), "B(E2; 21+ → 01+) value in 90Kr ", Physical Review C - Nuclear Physics. Vol. 90(6) |
| Abstract: A smooth onset of collectivity in 88,92,94,96Kr has been determined from reported B(E2;21+→01+) and E(21+) values. This is in contrast to the sudden onset in even-even Zr, Mo, and Sr isotopes. Our objective was to complete the systematics by determining the B(E2;21+→01+) value in Kr90, which was produced by cold-neutron-induced fission of 235U. The lifetime of the 21+ state in Kr90 was measured via the electronic γ-γ timing technique using the EXILL and FATIMA spectrometers. Based on the measured mean lifetime of τ = 15(10) ps, the B(E2;21+→01+) value of 13-5+26 W.u. in Kr90 is determined for the first time and the smooth onset of deformation in the even-even Kr isotopes beyond neutron number N=50 is confirmed. © 2014 American Physical Society. |
BibTeX:
@article{Régis2014,
author = {Régis, J.-M. and Jolie, J. and Saed-Samii, N. and Warr, N. and Pfeiffer, M. and Blanc, A. and Jentschel, M. and Köster, U. and Mutti, P. and Soldner, T. and Simpson, G.S. and Drouet, F. and Vancraeyenest, A. and De France, G. and Clément, E. and Stezowski, O. and Ur, C.A. and Urban, W. and Regan, P.H. and Podolyák, Zs. and Larijani, C. and Townsley, C. and Carroll, R. and Wilson, E. and Fraile, L.M. and Mach, H. and Paziy, V. and Olaizola, B. and Vedia, V. and Bruce, A.M. and Roberts, O.J. and Smith, J.F. and Kröll, T. and Hartig, A.-L. and Ignatov, A. and Ilieva, S. and Thürauf, M. and Lalkovski, S. and Ivanova, D. and Kisyov, S. and Korten, W. and Salsac, M.-D. and Zielińska, M. and Mərginean, N. and Ghitə, D.G. and Licə, R. and Petrache, C.M. and Astier, A. and Leguillon, R.},
title = {B(E2; 21+ → 01+) value in Kr 90},
journal = {Physical Review C - Nuclear Physics},
year = {2014},
volume = {90},
number = {6},
note = {Cited by: 21; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84914102305&doi=10.1103%2fPhysRevC.90.067301&partnerID=40&md5=2b12012aeeefef8b811a55a5298baec1},
doi = {10.1103/PhysRevC.90.067301}
}
|
| Régis J-M, Simpson G, Blanc A, De France G, Jentschel M, Köster U,
Mutti P, Paziy V, Saed-Samii N, Soldner T, Ur C, Urban W, Bruce A,
Drouet F, Fraile L, Ilieva S, Jolie J, Korten W, Kröll T, Lalkovski
S, Mach H, Mǎrginean N, Pascovici G, Podolyak Z, Regan P, Roberts O,
Smith J, Townsley C, Vancraeyenest A and Warr N (2014), "Germanium-gated γ-γ Fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer", Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 763, pp. 210 – 220. |
| Abstract: A high-granularity mixed spectrometer consisting of high-resolution Ge and very fast LaBr3(Ce)-scintillator detectors has been installed around a fission target at the cold-neutron guide PF1B of the high-flux reactor of the Institut Laue-Langevin. Lifetimes of excited states in the range of 10 ps to 10 ns can be measured in around 100 exotic neutron-rich fission fragments using Ge-gated LaBr3(Ce)-LaBr3(Ce) or Ge-Ge-LaBr 3(Ce)-LaBr3(Ce) coincidences. We report on various characteristics of the EXILL&FATIMA spectrometer for the energy range of 40 keV up to 6.8 MeV and present results of ps-lifetime test measurements in a fission fragment. The results are discussed with respect to possible systematic errors induced by background contributions. © 2014 Published by Elsevier B.V. |
BibTeX:
@article{Régis2014210,
author = {Régis, J.-M. and Simpson, G.S. and Blanc, A. and De France, G. and Jentschel, M. and Köster, U. and Mutti, P. and Paziy, V. and Saed-Samii, N. and Soldner, T. and Ur, C.A. and Urban, W. and Bruce, A.M. and Drouet, F. and Fraile, L.M. and Ilieva, S. and Jolie, J. and Korten, W. and Kröll, T. and Lalkovski, S. and Mach, H. and Mǎrginean, N. and Pascovici, G. and Podolyak, Zs. and Regan, P.H. and Roberts, O.J. and Smith, J.F. and Townsley, C. and Vancraeyenest, A. and Warr, N.},
title = {Germanium-gated γ-γ Fast timing of excited states in fission fragments using the EXILL&FATIMA spectrometer},
journal = {Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
year = {2014},
volume = {763},
pages = {210 – 220},
note = {Cited by: 60; All Open Access, Green Open Access},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904011918&doi=10.1016%2fj.nima.2014.06.004&partnerID=40&md5=c1a5efa30c8005259e0905e2d6f91677},
doi = {10.1016/j.nima.2014.06.004}
}
|