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Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in (254)Rf

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David, Huang M.; Chen, J.; Seweryniak, D.; Kondev, Filip G.; Gates, Jacklyn M.; Gregorich, Kenneth E.; Ahmad, I.; Albers, Mark; Alcorta, Martin; Back, B.; Baartman, Brendan; Bertone, P. F.; Bernstein, L.; Campbell, C. M.; Carpenter, M. P.; Chiara, C. J.; Clark, R. M.; Cromaz, M.; Doherty, D. T.; Dracoulis, George; Esker, N. E.; Fallon, P; Gothe, Oliver R; Greene, J.P.; Greenlees, P T; Hartley, D J; Hauschild, K; Hoffman, C R; Hota, Sankha; Janssens, R V F; Khoo, T; Konki, J; Kwarsick, J. T; Lauritsen, T; Macchiavelli, A O; Mudder, P. R; Nair, Chithra K Shashidharan; Qui, Y; Rissanen, Juho; Rogers, Andrew M; Ruotsalainen, P.; Savard, Guy; Stolze, S; Weins, Andreas; Zhu, S.

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Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73)μs have been discovered in the heavy Rf254 nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the Kπ=8-, ν2(7/2+[624],9/2-[734]) two-quasineutron and the Kπ=16+, 8-ν2(7/2+[624],9/2-[734])⊗ - 8-π2(7/2-[514],9/2+[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of...[Show more]

dc.contributor.authorDavid, Huang M.
dc.contributor.authorChen, J.
dc.contributor.authorSeweryniak, D.
dc.contributor.authorKondev, Filip G.
dc.contributor.authorGates, Jacklyn M.
dc.contributor.authorGregorich, Kenneth E.
dc.contributor.authorAhmad, I.
dc.contributor.authorAlbers, Mark
dc.contributor.authorAlcorta, Martin
dc.contributor.authorBack, B.
dc.contributor.authorBaartman, Brendan
dc.contributor.authorBertone, P. F.
dc.contributor.authorBernstein, L.
dc.contributor.authorCampbell, C. M.
dc.contributor.authorCarpenter, M. P.
dc.contributor.authorChiara, C. J.
dc.contributor.authorClark, R. M.
dc.contributor.authorCromaz, M.
dc.contributor.authorDoherty, D. T.
dc.contributor.authorDracoulis, George
dc.contributor.authorEsker, N. E.
dc.contributor.authorFallon, P
dc.contributor.authorGothe, Oliver R
dc.contributor.authorGreene, J.P.
dc.contributor.authorGreenlees, P T
dc.contributor.authorHartley, D J
dc.contributor.authorHauschild, K
dc.contributor.authorHoffman, C R
dc.contributor.authorHota, Sankha
dc.contributor.authorJanssens, R V F
dc.contributor.authorKhoo, T
dc.contributor.authorKonki, J
dc.contributor.authorKwarsick, J. T
dc.contributor.authorLauritsen, T
dc.contributor.authorMacchiavelli, A O
dc.contributor.authorMudder, P. R
dc.contributor.authorNair, Chithra K Shashidharan
dc.contributor.authorQui, Y
dc.contributor.authorRissanen, Juho
dc.contributor.authorRogers, Andrew M
dc.contributor.authorRuotsalainen, P.
dc.contributor.authorSavard, Guy
dc.contributor.authorStolze, S
dc.contributor.authorWeins, Andreas
dc.contributor.authorZhu, S.
dc.date.accessioned2018-11-29T22:53:17Z
dc.date.available2018-11-29T22:53:17Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/152426
dc.description.abstractTwo isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73)μs have been discovered in the heavy Rf254 nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the Kπ=8-, ν2(7/2+[624],9/2-[734]) two-quasineutron and the Kπ=16+, 8-ν2(7/2+[624],9/2-[734])⊗ - 8-π2(7/2-[514],9/2+[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the Rf254 ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1)μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Physical Society
dc.sourcePhysical Review Letters
dc.titleDecay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in (254)Rf
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume115
dc.date.issued2015
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationU3488905xPUB6387
local.type.statusPublished Version
local.contributor.affiliationDavid, Huang M, Argonne National Laboratory
local.contributor.affiliationChen, J., McMaster University
local.contributor.affiliationSeweryniak, D, Argonne National Laboratory
local.contributor.affiliationKondev, Filip G, Argonne National Laboratory
local.contributor.affiliationGates, Jacklyn M, LBNL University of California (Berkeley)
local.contributor.affiliationGregorich, Kenneth E, LBNL University of California (Berkeley)
local.contributor.affiliationAhmad, I., Argonne National Laboratory
local.contributor.affiliationAlbers, Mark, Argonne National Laboratory
local.contributor.affiliationAlcorta, Martin, TRIUMF, Vancouver, Canada
local.contributor.affiliationBack, B., Argonne National Laboratory
local.contributor.affiliationBaartman, Brendan, LBNL University of California (Berkeley)
local.contributor.affiliationBertone, P.F., Argonne National Laboratory
local.contributor.affiliationBernstein, L., Lawrence Livermore National Laboratory
local.contributor.affiliationCampbell, C. M, LBNL University of California (Berkeley)
local.contributor.affiliationCarpenter, M P, Argonne National Laboratory
local.contributor.affiliationChiara, C J, Argonne National Laboratory
local.contributor.affiliationClark, R M, Lawrence Berkeley National Laboratory
local.contributor.affiliationCromaz, M., Lawrence Berkeley National Laboratory
local.contributor.affiliationDoherty, D. T, University of Edinburgh
local.contributor.affiliationDracoulis, George, College of Science, ANU
local.contributor.affiliationEsker, N. E, LBNL University of California (Berkeley)
local.contributor.affiliationFallon, P, Lawrence Berkeley National Laboratory
local.contributor.affiliationGothe, Oliver R, LBNL University of California (Berkeley)
local.contributor.affiliationGreene, J.P., Argonne National Laboratory
local.contributor.affiliationGreenlees, P T, University of Jyvaskyla
local.contributor.affiliationHartley, D J, US Navy
local.contributor.affiliationHauschild, K, CEA-Saclay
local.contributor.affiliationHoffman, C R, Argonne National Laboratory
local.contributor.affiliationHota, Sankha, College of Science, ANU
local.contributor.affiliationJanssens, R V F, Argonne National Laboratory
local.contributor.affiliationKhoo, T, Argonne National Laboratory
local.contributor.affiliationKonki, J, University of Jyvaskylan Yliopisto
local.contributor.affiliationKwarsick, J. T, LBNL University of California (Berkeley)
local.contributor.affiliationLauritsen, T, Argonne National Laboratory
local.contributor.affiliationMacchiavelli, A O, Lawrence Berkeley National Laboratory
local.contributor.affiliationMudder, P. R, LBNL University of California (Berkeley)
local.contributor.affiliationNair, Chithra K Shashidharan , Argonne National Laboratory
local.contributor.affiliationQui, Y, University of Massachusetts Lowell
local.contributor.affiliationRissanen, Juho, University of Jyvaskylan Yliopisto
local.contributor.affiliationRogers, Andrew M, Argonne National Laboratory
local.contributor.affiliationRuotsalainen, P., University of Jyvaskyla
local.contributor.affiliationSavard, Guy, Argonne National Laboratory
local.contributor.affiliationStolze, S, University of Jyvaskylan Yliopisto
local.contributor.affiliationWeins, Andreas, LBNL University of California (Berkeley)
local.contributor.affiliationZhu, S., Argonne National Laboratory
local.bibliographicCitation.issue13
local.bibliographicCitation.startpage132502
local.bibliographicCitation.lastpage132502
local.identifier.doi10.1103/PhysRevLett.115.132502
dc.date.updated2018-11-29T07:51:33Z
local.identifier.scopusID2-s2.0-84943328976
local.identifier.thomsonID000361679600004
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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