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Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb

dc.contributor.authorBottoni, S
dc.contributor.authorGamba, E. R.
dc.contributor.authorDe Gregorio, G.
dc.contributor.authorGargano, A.
dc.contributor.authorLeoni, S.
dc.contributor.authorFornal, B.
dc.contributor.authorBrancadori, N.
dc.contributor.authorCiconali, G.
dc.contributor.authorCrespi, F. C. L.
dc.contributor.authorCieplicka-Oryńczak, N.
dc.contributor.authorIskra, Ł. W.
dc.contributor.authorColombi, G.
dc.contributor.authorKim, Y. H.
dc.contributor.authorKöster, U.
dc.contributor.authorMichelagnoli, C.
dc.contributor.authorDunkel, F.
dc.contributor.authorEsmaylzadeh, A.
dc.contributor.authorGerhard, L.
dc.contributor.authorJolie, J.
dc.contributor.authorKnafla, L.
dc.contributor.authorLey, M.
dc.contributor.authorRégis, J.-M.
dc.contributor.authorSchomaker, K.
dc.contributor.authorSferrazza, M.
dc.date.accessioned2023-07-28T10:23:21Z
dc.date.available2023-07-28T10:23:21Z
dc.date.issued2023
dc.description.abstractThe lifetime of the 11/2+ 1 state in the 131Sb nucleus was measured at the LOHENGRIN spectrometer of the Institut Laue-Langevin via neutron-induced fission of 235U 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 11/2+1 state half-life in neutron-rich Sb isotopes. The corresponding quadrupole reduced transition probability to the ground state is B(E2) = 1.4+1.5−0.6W.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+(130Sn) ⊗ πg7/2 configuration for the 11/2+1 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 130Sn 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 132Sn.pl_PL.UTF-8
dc.description.sponsorshipItalian Istituto Nazionale di Fisica Nucleare, the Polish National Science Centre, Poland, under research project No. 2020/39/D/ST2/03510, the Polish National Agency for Academic Exchange (NAWA) within the Bekker programme under Grant PPN/BEK/2020/1/00431/U/00001, the Institute for Basic Science (IBS-R031-D1), the German DFG under grant JO391/18-1, and the Fonds de la Recherche Scientifique - FNRS under Grants No. J.0174.22 and No. 4.45.10.08.pl_PL.UTF-8
dc.identifier.citationS. 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.- M. Regis, K. Schomaker, and M. Sferrazza, Phys. Rev. C 107, 014322 (2023).pl_PL.UTF-8
dc.identifier.doi
dc.identifier.doihttps://doi.org/10.48733/2023.no2.nz22
dc.identifier.urihttp://rifj.ifj.edu.pl/handle/item/407
dc.language.isoengpl_PL.UTF-8
dc.publisherInstitute of Nuclear Physics Polish Academy of Sciencespl_PL.UTF-8
dc.rightsUznanie autorstwa 4.0 Międzynarodowe*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.source.urihttps://journals.aps.org/prc/abstract/10.1103/PhysRevC.107.014322
dc.subjectfizyka jądrowa, spektroskopia gamma, reakcja rozszczepieniapl_PL.UTF-8
dc.subjectnuclear physics, gamma spectroscopy, fission reactionpl_PL.UTF-8
dc.titleTesting the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sbpl_PL.UTF-8
dc.typePostprintpl_PL.UTF-8

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