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Decay of the high-spin isomer in Re-160: Changing single-particle structure beyond the proton drip line
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2011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 695, no 1-4, 78-81 p.Article in journal (Refereed) Published
Abstract [en]

A new high-spin isomeric state (t(1/2) = 2.8 +/- 0.1 mu s) in Re-160 has been identified. This high-spin isomer is unique in that it only decays by gamma-decay and not by proton or alpha-particle emission as is the case in every other proton emitter between Z = 64 and 80. Shell model calculations indicate how the convergence of the h(9/2) and f(7/2) neutron levels in this region could open up a gamma-decay path from the high-spin isomer to the low-spin ground state of 160Re. providing a natural explanation for this anomalous absence of charged-particle emission. The consequences of these observations for future searches for proton emission from even more exotic nuclei and in-beam spectroscopic studies are considered.

Place, publisher, year, edition, pages
2011. Vol. 695, no 1-4, 78-81 p.
Keyword [en]
NUCLEAR REACTIONS Ni-58+Cd-106 at 290, 300 MeV beam energy, enriched targets, Gas-filled recoil separator, Si and Ge strip detectors, Measured E gamma, t1/2
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-100982DOI: 10.1016/j.physletb.2010.10.052ISI: 000286708700015Scopus ID: 2-s2.0-78650310245OAI: oai:DiVA.org:kth-100982DiVA: diva2:546108
Note
QC 20120822Available from: 2012-08-22 Created: 2012-08-22 Last updated: 2017-12-07Bibliographically approved

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