Multi-quasiparticle isomers in {sup 174}Lu

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.014304· OSTI ID:21289973

Kondev, F G; Ahmad, I; Carpenter, M P; Janssens, R V. F.; Lauritsen, T; Lister, C J; Seweryniak, D; Zhu, S ^[1]; Dracoulis, G D; Lane, G J; Kibedi, T ^[2]; Byrne, A P ^[2]; Chowdhury, P; Tandel, S K ^[3]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Department of Nuclear Physics, Australian National University, Canberra ACT 0200 (Australia)
3. Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854 (United States)

Four-, six-, and eight-quasiparticle isomers with K{sup {pi}}=14{sup -}, (21{sup +}) and (26{sup -}) have been identified in the deformed nucleus {sup 174}Lu, in addition to the previously reported K{sup {pi}}=13{sup +}, four-quasiparticle isomeric state. Analysis of alignments and in-band crossover-to-cascade branching ratios lead to the characterization of the configurations associated with the K{sup {pi}}=14{sup -} and (21{sup +}) isomers. The excitation energies of the observed states are compared with results from multi-quasiparticle calculations that include effects of blocking and residual nucleon-nucleon interactions. Good agreement is found for medium-spin (I=13-14({Dirac_h}/2{pi})) and the highest spin (I>20({Dirac_h}/2{pi})) states observed, but there remain ambiguities in assigning configurations in the I=15-19({Dirac_h}/2{pi}) region.

• OSTI ID: 21289973
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BRANCHING RATIO
CONFIGURATION
DEFORMED NUCLEI
EXCITATION
ISOMERS
LUTETIUM 174
NUCLEON-NUCLEON INTERACTIONS
SPIN