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Reinvestigation of the collective band structures in odd-odd 138Pm nucleus

  • H. J. Li
  • Z. G. XiaoEmail author
  • S. J. Zhu
  • C. Qi
  • E. Y. Yeoh
  • Z. Zhang
  • R. S. Wang
  • H. Yi
  • W. H. Yan
  • Q. Xu
  • X. G. Wu
  • C. Y. He
  • Y. Zheng
  • G. S. Li
  • C. B. Li
  • H. W. Li
  • J. J. Liu
  • S. P. Hu
  • J. L. Wang
  • S. H. Yao
Regular Article - Experimental Physics

Abstract

The high-spin states in the odd-odd 138Pm nucleus have been reinvestigated via the 124Te(19F, 5n) reaction at the beam energy of 103 MeV. Most of the known transitions and levels are confirmed. A number of bands are revised and one new band has been established. For the yrast πh 11/2νh 11/2 band based on 8+ state, no evidence supporting the occurence of signature inversion is found. The experimental and theoretical B(M1)/B(E2) ratios have been calculated for band (2), which support the πg 7/2[413]5/2+νh 11/2[514]9/2 Nilsson configuration assignment. Four bands with ΔI = 2 transitions are tentatively assigned as doubly decoupled bands. The other three bands are proposed as oblate-triaxial bands. The possible configuration assignments for these bands are also discussed under the calculations of total Routhian surface and particle-rotor model.

Keywords

Level Scheme Negative Parity Signature Splitting Signature Inversion Yrast Band 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • H. J. Li
    • 1
    • 2
  • Z. G. Xiao
    • 1
    • 3
    Email author
  • S. J. Zhu
    • 1
  • C. Qi
    • 2
  • E. Y. Yeoh
    • 1
  • Z. Zhang
    • 1
  • R. S. Wang
    • 1
  • H. Yi
    • 1
  • W. H. Yan
    • 1
  • Q. Xu
    • 1
  • X. G. Wu
    • 4
  • C. Y. He
    • 4
  • Y. Zheng
    • 4
  • G. S. Li
    • 4
  • C. B. Li
    • 4
  • H. W. Li
    • 4
  • J. J. Liu
    • 4
  • S. P. Hu
    • 4
  • J. L. Wang
    • 4
  • S. H. Yao
    • 4
  1. 1.Department of PhysicsTsinghua UniversityBeijingPeople’s Republic of China
  2. 2.Department of PhysicsRoyal Institute of TechnologyStockholmSweden
  3. 3.Collaborative Innovation Center of Quantum MatterBeijingChina
  4. 4.China Institute of Atomic EnergyBeijingChina

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