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Rotational alignment of the h11/2 band in 157Dy

  • T. Hayakawa
  • Y. Toh
  • M. Oshima
  • M. Matsuda
  • Y. Hatsukawa
  • J. Katakura
  • H. Iimura
  • T. Shizuma
  • S. Mitarai
  • M. Sugawara
  • H. Kusakari
  • Y.H. Zhang
Short Note

Abstract:

High-spin states of 157Dy were investigated using in-beam γ-ray spectroscopy techniques with a 150Nd(12C, 5n) reaction. Three rotational bands with the h9/2, i13/2 and h11/2 configurations were observed up to (43/2-), 53/2+ and 45/2-, respectively. Interband M1 transitions in the h11/2 (high-Ω) band were also measured up to the highest-spin state. The high-spin states were well reproduced by calculations using the tilted-axis-cranking model (TAC). The B(M1)/B(E2) ratio, Routhian and the tilted angle of the angular-momentum vector are found to be in good agreement with the result of the TAC calculation.

PACS. 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ⩽ A ⩽ 189 – 21.60.Ev Collective models 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • T. Hayakawa
    • 1
  • Y. Toh
    • 1
  • M. Oshima
    • 1
  • M. Matsuda
    • 1
  • Y. Hatsukawa
    • 1
  • J. Katakura
    • 1
  • H. Iimura
    • 1
  • T. Shizuma
    • 1
  • S. Mitarai
    • 2
  • M. Sugawara
    • 3
  • H. Kusakari
    • 4
  • Y.H. Zhang
    • 5
  1. 1.Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, JapanJP
  2. 2.Kyushu University, Hakozaki, Fukuoka 812-8581, JapanJP
  3. 3.Chiba Institute of Technology, Narashino, Chiba 275-8588, JapanJP
  4. 4.Chiba University, Inage-ku, Chiba 263-8522, JapanJP
  5. 5.Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, PRCCN

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