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Monopole-driven shell evolution below the doubly magic nucleus Sn 132 explored with the long-lived isomer in Pd 126

Watanabe, Hiroshi; Lorusso, G; Otsuka, T; Ogawa, K.; Xu, Z.Y.; Sumikama, T; Soderstrom, P.-A.; Doornenbal, P.; Li, Z.; Browne, F; Gey, G; Lane, Gregory

Description

A new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in Pd126 and is proposed to have a spin and parity of 10+ with a maximally aligned configuration comprising two neutron holes in the 1h11/2 orbit. In addition to an internal-decay branch through a hindered electric octupole transition, β decay from the long-lived isomer was observed to populate excited states at high spins in Ag126. The smaller energy difference between the 10+ and 7- isomers in Pd126 than in the...[Show more]

dc.contributor.authorWatanabe, Hiroshi
dc.contributor.authorLorusso, G
dc.contributor.authorOtsuka, T
dc.contributor.authorOgawa, K.
dc.contributor.authorXu, Z.Y.
dc.contributor.authorSumikama, T
dc.contributor.authorSoderstrom, P.-A.
dc.contributor.authorDoornenbal, P.
dc.contributor.authorLi, Z.
dc.contributor.authorBrowne, F
dc.contributor.authorGey, G
dc.contributor.authorLane, Gregory
dc.date.accessioned2015-12-13T22:28:38Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/74289
dc.description.abstractA new isomer with a half-life of 23.0(8) ms has been identified at 2406 keV in Pd126 and is proposed to have a spin and parity of 10+ with a maximally aligned configuration comprising two neutron holes in the 1h11/2 orbit. In addition to an internal-decay branch through a hindered electric octupole transition, β decay from the long-lived isomer was observed to populate excited states at high spins in Ag126. The smaller energy difference between the 10+ and 7- isomers in Pd126 than in the heavier N=80 isotones can be interpreted as being ascribed to the monopole shift of the 1h11/2 neutron orbit. The effects of the monopole interaction on the evolution of single-neutron energies below Sn132 are discussed in terms of the central and tensor forces.
dc.publisherAmerican Physical Society
dc.rightsAuthor/s retain copyright
dc.sourcePhysical Review Letters
dc.titleMonopole-driven shell evolution below the doubly magic nucleus Sn 132 explored with the long-lived isomer in Pd 126
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume113
dc.date.issued2014
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationU3488905xPUB4047
local.type.statusPublished Version
local.contributor.affiliationWatanabe, Hiroshi, RIKEN Nishina Center
local.contributor.affiliationLorusso, G, RIKEN Nishina Center
local.contributor.affiliationOtsuka, T, University of Tokyo
local.contributor.affiliationOgawa, K., RIKEN Nishina Center
local.contributor.affiliationXu, Z.Y., University of Tokyo
local.contributor.affiliationSumikama, T, Tohoku University
local.contributor.affiliationSoderstrom, P.-A., RIKEN Nishina Center
local.contributor.affiliationDoornenbal, P., RIKEN
local.contributor.affiliationLi, Z., Peking University
local.contributor.affiliationBrowne, F, University of Brighton
local.contributor.affiliationGey, G, Universite Joseph Fourier Grenoble
local.contributor.affiliationLane, Gregory, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.issue4
local.bibliographicCitation.startpage042052/1
local.bibliographicCitation.lastpage6
local.identifier.doi10.1103/PhysRevLett.113.042502
dc.date.updated2015-12-11T08:40:22Z
local.identifier.scopusID2-s2.0-84905037592
local.identifier.thomsonID000341261100004
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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