Data di Pubblicazione:
2023
Citazione:
Lifetime measurements in 131Sb at LOHENGRIN / S. Bottoni, E.R. Gamba, G. De Gregorio, A. Gargano, S. Leoni, B. Fornal, N. Brancadori, G. Ciconali, F.C.L. Crespi, N. Cieplicka-Orynczak, L.W. Iskra, G. Colombi, Y.H. Kim, U. Koster, C. Michelagnoli, F. Dunkel, A. Esmaylzadeh, L. Gerhard, J. Jolie, L. Knafla, M. Ley, J.-. Regis, K. Schomaker, M. Sferrazza. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 2586:1(2023). (Intervento presentato al 28. convegno INPC International Nuclear Physics Conference : 11 through 16 September tenutosi a Cape Town (South Africa) nel 2022) [10.1088/1742-6596/2586/1/012089].
Abstract:
The neutron-rich 131Sb nucleus was studied at Institut Laue-Langevin, with the LOHENGRIN spectrometer, via neutron-induced fission of 235U and lifetime measurements using LaBr3(Ce) detectors. The lifetimes of the 11/2+1 and 19/2+1 states were measured with the generalized centroid difference and the decay slope methods, yielding T1/2=3(2) ps and T1/2=1347(171) ps, respectively. The measured value for the 11/2+1 is at the limit of the fast-timing technique. The level scheme of 131Sb and the decay properties of the 11/2+1 state were described by realistic shell-model calculations, which reproduce well both the experimental spin and energy sequences of 131Sb and the measured B(E2;11/2+1 → 7/2+1 ) value, pointing to an almost pure 2+(130Sn) ⊗ πg7/2, core-proton coupled configuration for the 11/2+1 state.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
S. Bottoni, E.R. Gamba, G. De Gregorio, A. Gargano, S. Leoni, B. Fornal, N. Brancadori, G. Ciconali, F.C.L. Crespi, N. Cieplicka-Orynczak, L.W. Iskra, G. Colombi, Y.H. Kim, U. Koster, C. Michelagnoli, F. Dunkel, A. Esmaylzadeh, L. Gerhard, J. Jolie, L. Knafla, M. Ley, J.-. Regis, K. Schomaker, M. Sferrazza
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