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High-spin spectroscopy and shell-model interpretation of the N < 126 radium isotopes 212Ra and 213Ra

Palazzo, Thomas; Lane, Gregory; Stuchbery, Andrew; Mitchell, Alan; Akber, Aqeel; Gerathy, Matthew; Hota, Sankha; Kibedi, Tibor; Lee, Boon; Palalani, Nyaladzi; Reed, Matthew

Description

The level structures of Ra212 and Ra213 have been established via time-correlated γ-ray spectroscopy following the Pb204(C12,4n)Ra212 and Pb204(C13,4n)Ra213 reactions. In Ra212, levels up to ∼6.2MeV were identified and firm spin-parity assignments were achieved to a Jπ=19+ isomer with a mean life of 31(3) ns. For Ra213 the corresponding values were ∼4.5MeV in excitation energy and Jπ=33/2+. Two isomeric states with Jπ=23/2+, τ=27(3) ns and Jπ=33/2+, τ=50(3) ns were discovered in Ra213. The...[Show more]

dc.contributor.authorPalazzo, Thomas
dc.contributor.authorLane, Gregory
dc.contributor.authorStuchbery, Andrew
dc.contributor.authorMitchell, Alan
dc.contributor.authorAkber, Aqeel
dc.contributor.authorGerathy, Matthew
dc.contributor.authorHota, Sankha
dc.contributor.authorKibedi, Tibor
dc.contributor.authorLee, Boon
dc.contributor.authorPalalani, Nyaladzi
dc.contributor.authorReed, Matthew
dc.date.accessioned2020-01-23T01:32:38Z
dc.date.available2020-01-23T01:32:38Z
dc.identifier.issn2469-9985
dc.identifier.urihttp://hdl.handle.net/1885/199412
dc.description.abstractThe level structures of Ra212 and Ra213 have been established via time-correlated γ-ray spectroscopy following the Pb204(C12,4n)Ra212 and Pb204(C13,4n)Ra213 reactions. In Ra212, levels up to ∼6.2MeV were identified and firm spin-parity assignments were achieved to a Jπ=19+ isomer with a mean life of 31(3) ns. For Ra213 the corresponding values were ∼4.5MeV in excitation energy and Jπ=33/2+. Two isomeric states with Jπ=23/2+, τ=27(3) ns and Jπ=33/2+, τ=50(3) ns were discovered in Ra213. The experimental data were compared with semiempirical shell-model calculations, which allowed dominant configurations to be assigned to most of the observed levels.
dc.description.sponsorshipThis research was supported in part by the Australian Research Council, Grants No. DP120101417, No.DP130104176, No. DP140102986, No. DP140103317, and No. FT100100991. A.A. and M.S.M.G. acknowledge support of the Australian Government Research Training Program.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Physical Society
dc.rights© 2018 American Physical Society
dc.sourcePhysical Review C: Nuclear Physics
dc.titleHigh-spin spectroscopy and shell-model interpretation of the N < 126 radium isotopes 212Ra and 213Ra
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume97
dc.date.issued2018-01-31
local.identifier.absfor020202 - Nuclear Physics
local.identifier.ariespublicationa383154xPUB9384
local.publisher.urlhttps://journals.aps.org
local.type.statusPublished Version
local.contributor.affiliationPalazzo, Thomas, College of Science, ANU
local.contributor.affiliationLane, Gregory, College of Science, ANU
local.contributor.affiliationStuchbery, Andrew, College of Science, ANU
local.contributor.affiliationMitchell, Alan, College of Science, ANU
local.contributor.affiliationAkber, Aqeel, College of Science, ANU
local.contributor.affiliationGerathy, Matthew, College of Science, ANU
local.contributor.affiliationHota, Sankha, College of Science, ANU
local.contributor.affiliationKibedi, Tibor, College of Science, ANU
local.contributor.affiliationLee, Boon, College of Science, ANU
local.contributor.affiliationPalalani, Nyaladzi, College of Science, ANU
local.contributor.affiliationReed, Matthew, College of Science, ANU
dc.relationhttp://purl.org/au-research/grants/arc/DP120101417
dc.relationhttp://purl.org/au-research/grants/arc/DP130104176
dc.relationhttp://purl.org/au-research/grants/arc/DP140102986
dc.relationhttp://purl.org/au-research/grants/arc/DP140103317
local.bibliographicCitation.issue014323
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage17
local.identifier.doi10.1103/PhysRevC.97.014323
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-11-25T07:23:18Z
local.identifier.scopusID2-s2.0-85041583640
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/2469-9985/..."author can archive publisher's version/PDF" from SHERPA/RoMEO site (as at 23.1.20).
CollectionsANU Research Publications

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