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High-spin states in 166Lu

  • Guangyi Zhao
  • Yunzuo Liu
  • Jingbin Lu
  • Yingjun Ma
  • Lichang Yin
  • Xianfeng Li
  • Zhihuan Li
  • Xiaoguang Wu
  • Guangsheng Li
  • Shuxian Wen
  • Chunxiang Yang
Short note

Abstract:

Five rotational bands with configurations {π7/2+[404] ⊗ν5/2+[642]} K = 6, {π9/2-[514] ⊗ν5/2+[642]} K = 7, {π1/2+[411] ⊗ν5/2+[642]} K = 2, {π1/2-[541] ⊗ν5/2+[642]} K = 2 and {π5/2+[402] ⊗ν5/2+[642]} K = 5 were populated through the 152Sm ( 19F, 5n) 166Lu reaction at a beam energy of 97MeV. The last three bands are identified in the present study. A phase change of level staggering is observed and low-spin signature inversion is suggested in the band {π1/2-[541] ⊗ν5/2+[642]} K=2. The inversion spin 17.5? (spin at inversion point) of this band fits well to the systematic variation trend of inversion spin, increasing with N and decreasing with Z, for the known π1/2-[541] ⊗νi13/2 bands observed in odd-odd deformed nuclei around A = 170.

PACS. 21.10.Re Collective levels – 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ≤A≤ 189 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2000

Authors and Affiliations

  • Guangyi Zhao
    • 1
  • Yunzuo Liu
    • 1
  • Jingbin Lu
    • 1
  • Yingjun Ma
    • 1
  • Lichang Yin
    • 1
  • Xianfeng Li
    • 1
  • Zhihuan Li
    • 1
  • Xiaoguang Wu
    • 2
  • Guangsheng Li
    • 2
  • Shuxian Wen
    • 2
  • Chunxiang Yang
    • 2
  1. 1.Department of Physics, Jilin University, Changchun 130023, People's Republic of ChinaCN
  2. 2.China Institute of Atomic Energy, PO Box 275, Beijing 102413, People's Republic of ChinaCN

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