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New Type of Asymmetric Fission in Proton-Rich Nuclei

dc.contributor.authorN. ANDREYEV, A.
dc.contributor.authorELSEVIERS, J.
dc.contributor.authorHUYSE, M.
dc.contributor.authorVAN DUPPEN, P.
dc.contributor.authorANTALIC, S.
dc.contributor.authorBARZAKH, A.
dc.contributor.authorBREE, N.
dc.contributor.authorE. COCOLIOS, T.
dc.contributor.authorF. COMAS, V.
dc.contributor.authorDIRIKEN, J.
dc.contributor.authorFEDOROV, D.
dc.contributor.authorFEDOSSEEV, V.
hal.structure.identifierInstitut de Physique Nucléaire d'Orsay [IPNO]
dc.contributor.authorFRANCHOO, S.
dc.contributor.authorA. HEREDIA, J.
dc.contributor.authorIVANOV, O.
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorKÖSTER, U.
dc.contributor.authorA. MARSH, B.
dc.contributor.authorNISHIO, K.
dc.contributor.authorD. PAGE, R.
dc.contributor.authorPATRONIS, N.
dc.contributor.authorSELIVERSTOV, M.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorTSEKHANOVICH, I.
dc.contributor.authorVAN DEN BERGH, P.
dc.contributor.authorVAN DE WALLE, J.
dc.contributor.authorVENHART, M.
dc.contributor.authorVERMOTE, S.
dc.contributor.authorVESELSKY, M.
dc.contributor.authorWAGEMANS, C.
dc.contributor.authorICHIKAWA, T.
dc.contributor.authorIWAMOTO, A.
dc.contributor.authorMÖLLER, P.
dc.contributor.authorJ. SIERK, A.
dc.date.issued2010-12-14
dc.identifier.issn0031-9007
dc.description.abstractEnA very exotic process of β-delayed fission of 180Tl is studied in detail by using resonant laser ionization with subsequent mass separation at ISOLDE (CERN). In contrast to common expectations, the fission-fragment mass distribution of the post-β-decay daughter nucleus 180Hg (N/Z=1.25) is asymmetric. This asymmetry is more surprising since a mass-symmetric split of this extremely neutron-deficient nucleus would lead to two 90Zr fragments, with magic N=50 and semimagic Z=40. This is a new type of asymmetric fission, not caused by large shell effects related to fragment magic proton and neutron numbers, as observed in the actinide region. The newly measured branching ratio for β-delayed fission of 180Tl is 3.6(7)×10-3%, approximately 2 orders of magnitude larger than in an earlier study.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enNew Type of Asymmetric Fission in Proton-Rich Nuclei
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.105.252502
dc.subject.halPhysique [physics]/Physique Nucléaire Expérimentale [nucl-ex]
bordeaux.journalPhysical Review Letters
bordeaux.page252502
bordeaux.volume105
bordeaux.peerReviewedoui
hal.identifierin2p3-00575165
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00575165v1
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