γ -ray spectroscopy of a four-quasiparticle isomer band in Re 174

R. J. Carroll, P. M. Walker, G. J. Lane, M. W. Reed, A. Akber, H. M. Albers, J. J. Carroll, D. M. Cullen, A. C. Dai, C. Fahlander, M. S.M. Gerathy, S. S. Hota, G. Lotay, T. Kibédi, V. Margerin, A. J. Mitchell, N. Palalani, T. Palazzo, Z. Patel, R. ShearmanA. E. Stuchbery, F. R. Xu

Research output: Contribution to journalArticlepeer-review

Abstract

Excited states in Re174 have been populated in fusion-evaporation reactions at the Australian National University, and γ-ray spectroscopy has been used to determine the level structure and to deduce the underlying nucleon configurations. The half-life of the bandhead of the Kπ=8- band has been measured to be 2.7(4) ns. A band built on an isomeric state of spin-parity (14-) and a half-life of 53(5) ns has been observed here for the first time, and has been determined to have a four-quasiparticle structure. Contrasting reduced-hindrance values for its decay are discussed in terms of deformation and configuration changes, as indicated by configuration-constrained potential energy surface calculations.

Original languageEnglish
Article number054314
JournalPhysical Review C
Volume101
Issue number5
DOIs
Publication statusPublished - 2020 May

Subject classification (UKÄ)

  • Subatomic Physics

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