Decay of the high-spin isomer in Re-160: Changing single-particle structure beyond the proton drip line
No Thumbnail Available
Date
2011
Journal Title
Journal ISSN
Volume Title
Publisher
ELSEVIER SCIENCE BV
Access Rights
info:eu-repo/semantics/openAccess
Abstract
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. (C) 2010 Elsevier B.V. All rights reserved.
Description
Keywords
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
Journal or Series
PHYSICS LETTERS B
WoS Q Value
Q1
Scopus Q Value
Q1
Volume
695
Issue
45383
