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First lifetime investigations of N>82 iodine isotopes: The quest for collectivity

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dc.abstract.enWe report on spectroscopic information and lifetime measurements in the neutron-rich <sup>135,137,139</sup>I isotopes. This is the first lifetime data on iodine isotopes beyond N=82. Excited states were populated in fast neutron-induced fission of <sup>238</sup>U at the ALTO facility of IJCLab with the LICORNE neutron source and detected using the hybrid ν-ball spectrometer. The level schemes of the <sup>135,137,139</sup>I isotopes are revised in terms of excited states with up to maximum spin-parity of (33/2<sup>+</sup>), populated for the first time in fast neutron-induced fission. We provide first results on the lifetimes of the (9/2<sup>+</sup><sub>1</sub>) and (13/2<sup>+</sup><sub>1</sub>) states in <sup>137</sup>I and <sup>139</sup>I, and the (17/2<sup>+</sup><sub>1</sub>) state in <sup>137</sup>I. In addition, we give upper lifetime limits for the (11/2<sup>+</sup><sub>1</sub>) states in <sup>135-139</sup>I, the (15/2<sup>+</sup><sub>1</sub>) state in <sup>137</sup>I, the (17/2<sup>+</sup><sub>1</sub>) state in <sup>139</sup>I, and reexamine the (29/2<sup>+</sup><sub>1</sub>) state in <sup>137</sup>I. The isomeric data in <sup>135</sup>I are reinvestigated, such as the previously known (15/2<sup>+</sup><sub>1</sub>) and (23/2<sup>-</sup><sub>1</sub>) isomers with T<sub>1/2</sub> 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 <sup>132</sup>Sn, indicating the behavior of collectivity for the three valence-proton iodine chain with N=82,84,86.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorAdamska, Ewa
dc.contributor.authorKorgul, Agnieszka
dc.contributor.authorMiernik, Krzysztof
dc.contributor.authorPopovitch, Y.
dc.contributor.authorAdsley, P.
dc.contributor.authorPaulsen, W.
dc.contributor.authorAlgora, A.
dc.contributor.authorOberstedt, S.
dc.contributor.authorNemer, J.
dc.contributor.authorMatthieu, L.
dc.contributor.authorRegan, P. H.
dc.contributor.authorRalet, D.
dc.contributor.authorQi, L.
dc.contributor.authorPorzio, C.
dc.contributor.authorLeoni, S.
dc.contributor.authorLe-meur, L.
dc.contributor.authorRudigier, M.
dc.contributor.authorWilson, J. N.
dc.contributor.authorEtasse, D.
dc.contributor.authorCanavan, R. L.
dc.contributor.authorKröll, Th.
dc.contributor.authorKurtukian-Nieto, T.
dc.contributor.authorJazwari, S.
dc.contributor.authorKoseoglou, P.
dc.contributor.authorIbrahim, F.
dc.contributor.authorIskra, Ł. W.
dc.contributor.authorHäfner, G.
dc.contributor.authorSürder, C.
dc.contributor.authorGerst, R.-B.
dc.contributor.authorGjestvang, D.
dc.contributor.authorHenrich, C.
dc.contributor.authorHomm, I.
dc.contributor.authorGuadilla, V.
dc.contributor.authorHauschild, K.
dc.contributor.authorFallot, M.
dc.contributor.authorFraile, L. M.
dc.contributor.authorLebois, M.
dc.contributor.authorJovančević, N.
dc.contributor.authorLozeva, R.
dc.contributor.authorNaïdja, H.
dc.contributor.authorDavies, P. J.
dc.contributor.authorDelafosse, C.
dc.contributor.authorThisse, D.
dc.contributor.authorCollins, S. M.
dc.contributor.authorCortés, M. L.
dc.contributor.authorBunce, M.
dc.contributor.authorChakma, R.
dc.contributor.authorBoso, A.
dc.contributor.authorBottoni, S.
dc.contributor.authorCieplicka-Oryńczak, N.
dc.contributor.authorLopez-Martens, A.
dc.contributor.authorLjungvall, J.
dc.contributor.authorYavahchova, M. S.
dc.contributor.authorBabo, M.
dc.contributor.authorWiederhold, J.
dc.contributor.authorWasilewska, B.
dc.contributor.authorWarr, N.
dc.contributor.authorBenzoni, G.
dc.contributor.authorVerney, D.
dc.contributor.authorBlazhev, A.
dc.contributor.authorVedia, V.
dc.contributor.authorBelvedere, K.
dc.contributor.authorTocabens, G.
dc.contributor.authorBenito, J.
dc.contributor.authorZiliani, S.
dc.contributor.authorZeiser, F.
dc.contributor.authorSöderström, P.-A.
dc.contributor.authorSchmitt, C.
dc.contributor.authorSanchez-Tembleque, V.
dc.contributor.authorRezynkina, K.
dc.contributor.authorTello, D. Reygadas
dc.contributor.authorPiersa, Monika
dc.date.accessioned2024-01-25T00:45:58Z
dc.date.available2024-01-25T00:45:58Z
dc.date.issued2021
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.volume104
dc.identifier.doi10.1103/PHYSREVC.104.014316
dc.identifier.issn2469-9985
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/107202
dc.identifier.weblinkhttps://journals.aps.org/prc/abstract/10.1103/PhysRevC.104.014316
dc.languageeng
dc.pbn.affiliationphysical sciences
dc.relation.ispartofPhysical Review C
dc.relation.pages014316
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.subject.enNUCLEAR-DATA SHEETS
dc.subject.enNEUTRON-RICH NUCLEI
dc.subject.enSHELL-MODEL
dc.subject.enYRAST EXCITATIONS
dc.subject.enSN-132
dc.subject.enGENERATION
dc.subject.enFISSION
dc.subject.enISOMER
dc.subject.enDECAY
dc.titleFirst lifetime investigations of N>82 iodine isotopes: The quest for collectivity
dc.typeJournalArticle
dspace.entity.typePublication