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T-band phenomena in 183Re

  • N. Hashimoto
  • T.R. Saitoh
  • G. Sletten
  • R.A. Bark
  • M. Bergström
  • K. Furuno
  • T. Komatsubara
  • T. Shizuma
  • S. Törmänen
  • P.G. Varmette
Short notes

Abstact:

High-spin states in 183Re have been studied using the 176Yb(11B,4n) reaction at 52 and 57 MeV. Two high-K bands have been observed directly by a time-correlated γ-γ coincidence measurement. One of the bands is built on an isomeric Kπ=(25/2)+ state at Ex= 1908 keV with a half-life of 0.82(2) ms. The other band, assigned as Kπ=(29/2) at Ex= 2739 keV, decays to the (25/2)+ band. These bands are interpreted as three-quasiparticle structures, π(5/2)+[402] &⊗ν(9/2)+[624] ⊗ν(11/2)+[615] for the (25/2)+ band and π(9/2)[514] ⊗ν(9/2)+[624] ⊗ν(11/2)+[615] for the (29/2) band. The Kπ= (29/2) band becomes strongly Coriolis mixed with increasing spin and is gradually changing into a low-K s-band structure.

PACS:21.10.Tg Lifetimes – 23.20.Lv Gamma transitions and level energies 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • N. Hashimoto
    • 1
  • T.R. Saitoh
    • 2
  • G. Sletten
    • 2
  • R.A. Bark
    • 2
  • M. Bergström
    • 2
  • K. Furuno
    • 1
  • T. Komatsubara
    • 1
  • T. Shizuma
    • 1
  • S. Törmänen
    • 2
  • P.G. Varmette
    • 2
  1. 1.Department of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305-8577, JapanUP
  2. 2.The Niels Bohr Institute, University of Copenhagen, Roskilde, DenmarkDK

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