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Claes Fahlander

Professor emeritus

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

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

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.

Department/s

  • Nuclear physics

Publishing year

2020-05

Language

English

Publication/Series

Physical Review C

Volume

101

Issue

5

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2469-9985