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Discovery of a nonyrast Kπ=8+ isomer in Dy162, and the influence of competing K-mixing mechanisms on its highly forbidden decay

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dc.contributor.authorSwan, T.P.D.
dc.contributor.authorWalker, Philip M
dc.contributor.authorPodolyak, Zs.
dc.contributor.authorReed, M.W.
dc.contributor.authorDracoulis, George
dc.contributor.authorLane, Gregory
dc.contributor.authorKibedi, Tibor
dc.contributor.authorSmith, Michael
dc.date.accessioned2015-12-10T22:41:06Z
dc.date.issued2011
dc.date.updated2015-12-09T11:04:08Z
dc.description.abstractThe Gd160(Be9,α3n)Dy162 reaction has been used to study high-spin states in Dy162. Pulsed beam conditions were utilized for enhanced isomer sensitivity. An isomer at 2188.1(3) keV with a half-life of 8.3(3) μs has been discovered and assigned Kπ= 8+ with a two-quasineutron configuration. Among 11 γ-ray decay branches, an E2, ΔK=8 transition to the ground-state band was observed with a reduced hindrance of fν=35, agreeing well with systematics correlating fν with the product of the valence neutron and proton numbers (NpNn) over an extended N,Z range. Small deviations from NpNn dependence are analyzed for a range of two-quasiparticle isomer decays and interpreted as arising from a weak dependence on the isomer excitation energy relative to the yrast line.
dc.identifier.issn0556-2813
dc.identifier.urihttp://hdl.handle.net/1885/57743
dc.publisherAmerican Physical Society
dc.sourcePhysical Review C: Nuclear Physics
dc.titleDiscovery of a nonyrast Kπ=8+ isomer in Dy162, and the influence of competing K-mixing mechanisms on its highly forbidden decay
dc.typeJournal article
local.bibliographicCitation.issue3
local.bibliographicCitation.startpage5
local.contributor.affiliationSwan, T.P.D., University of Surrey
local.contributor.affiliationWalker, Philip M, University of Surrey
local.contributor.affiliationPodolyak, Zs., University of Surrey
local.contributor.affiliationReed, M.W., University of Surrey
local.contributor.affiliationDracoulis, George, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLane, Gregory, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationKibedi, Tibor, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSmith, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidDracoulis, George, u7300953
local.contributor.authoruidLane, Gregory, u4019877
local.contributor.authoruidKibedi, Tibor, u8800308
local.contributor.authoruidSmith, Michael, u4356073
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationu4155331xPUB413
local.identifier.citationvolume83
local.identifier.doi10.1103/PhysRevC.83.034322
local.identifier.scopusID2-s2.0-79960588249
local.identifier.thomsonID000288856200003
local.type.statusPublished Version

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