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

Summary, in English

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.

• Author: 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. Shearman; A. E. Stuchbery; F. R. Xu
• Department/s: Nuclear physics
• Publishing year: 2020-05
• Language: English
• Publication/Series: Physical Review C
• Volume: 101
• Issue: 5
• Links: http://dx.doi.org/10.1103/PhysRevC.101.054314
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 2469-9985