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Particle-rotor versus particle-vibration features in g factors of Cd-111 and Cd-113

Stuchbery, Andrew; Chamoli, Sanjay; Kibedi, Tibor

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The emergence and evolution of collective excitations in complex nuclei remains a central problem in the quest to understand the nuclear many-body problem. Nuclear quadrupole collectivity is usually investigated via electric quadrupole observables. Here, however, we measure the g factors of low-excitation states in Cd111 and Cd113 and show that they are sensitive to the nature of the collectivity in these nuclei in ways that the electric quadrupole observables are not. The particle-vibration...[Show more]

dc.contributor.authorStuchbery, Andrew
dc.contributor.authorChamoli, Sanjay
dc.contributor.authorKibedi, Tibor
dc.date.accessioned2018-11-30T01:19:01Z
dc.date.available2018-11-30T01:19:01Z
dc.identifier.issn2469-9985
dc.identifier.urihttp://hdl.handle.net/1885/153905
dc.description.abstractThe emergence and evolution of collective excitations in complex nuclei remains a central problem in the quest to understand the nuclear many-body problem. Nuclear quadrupole collectivity is usually investigated via electric quadrupole observables. Here, however, we measure the g factors of low-excitation states in Cd111 and Cd113 and show that they are sensitive to the nature of the collectivity in these nuclei in ways that the electric quadrupole observables are not. The particle-vibration model, which assumes spherical core excitations, cannot explain the g factors, whereas a particle-rotor model with a small, nonzero core deformation does. The contrast of the two models is made stark by the fact that they begin from the same limiting g-factor values: It is shown that when an odd nucleon occupies a spherical orbit with angular momentum j=1/2, or a deformed orbit with j=1/2 parentage, the particle-vibration model and the particle-rotor model both reduce to the same g-factor value in their respective limits of zero particle-vibration coupling or zero deformation.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Physical Society
dc.sourcePhysical Review C: Nuclear Physics
dc.titleParticle-rotor versus particle-vibration features in g factors of Cd-111 and Cd-113
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume93
dc.date.issued2016
local.identifier.absfor020200 - ATOMIC, MOLECULAR, NUCLEAR, PARTICLE AND PLASMA PHYSICS
local.identifier.absfor020203 - Particle Physics
local.identifier.absfor020400 - CONDENSED MATTER PHYSICS
local.identifier.ariespublicationU3488905xPUB24678
local.type.statusPublished Version
local.contributor.affiliationStuchbery, Andrew , College of Science, ANU
local.contributor.affiliationChamoli, Sanjay, College of Science, ANU
local.contributor.affiliationKibedi, Tibor, College of Science, ANU
local.bibliographicCitation.issue3
local.identifier.doi10.1103/PhysRevC.93.031302
dc.date.updated2018-11-29T08:18:17Z
local.identifier.scopusID2-s2.0-84962285539
local.identifier.thomsonID000372416000001
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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