K-hindered decay of a six-quasiparticle isomer in {sup 176}Hf
Journal Article
·
· Physical Review. C, Nuclear Physics
- Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854 (United States)
- Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200 (Australia)
- Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom)
- Department of Physics, Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE (United Kingdom)
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
The structure and decay properties of high-K isomers in {sup 176}Hf have been studied using beam sweeping techniques and the Gammasphere multidetector array. A new {Delta}K=8 decay branch, from a K{sup {pi}}=22{sup -}, six-quasiparticle, isomeric (t{sub 1/2}=43{mu}s) state at 4864 keV to the 20{sup -} state of a K{sup {pi}}=14{sup -} band, has been identified. The reduced hindrance factor per degree of K forbiddenness for this decay is measured to be unusually low (f{sub {nu}}=3.2), which suggests K mixing in the states involved. The deduced interaction matrix elements are discussed within the context of relevant K-mixing scenarios. The 3266-keV state, previously interpreted as a K{sup {pi}}=16{sup +} intrinsic state, is reassigned as the J{sup {pi}}=16{sup +} member of the band based on the K{sup {pi}}=15{sup +} state at 3080 keV. The systematics of f{sub {nu}} values as a function of the degree of forbiddenness is discussed in light of this change.
- OSTI ID:
- 21499174
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 82; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
K-hindered decay of a six-quasiparticle isomer in {sup 176}Hf.
Configuration changes and hindered decays in four- and six-quasiparticle isomers in {sup 178}Ta
Excited states of {sup 176}Hf
Journal Article
·
Sun Nov 28 23:00:00 EST 2010
· Phys. Rev. C
·
OSTI ID:1014817
Configuration changes and hindered decays in four- and six-quasiparticle isomers in {sup 178}Ta
Journal Article
·
Thu Aug 01 00:00:00 EDT 1996
· Physical Review, C
·
OSTI ID:286841
Excited states of {sup 176}Hf
Journal Article
·
Tue Feb 14 23:00:00 EST 2006
· Physics of Atomic Nuclei
·
OSTI ID:21076126