中国物理B ›› 2001, Vol. 10 ›› Issue (4): 282-285.doi: 10.1088/1009-1963/10/4/303

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THE NUCLEAR STRUCTURE AND BACKBENDING PHENOMENON FOR 114-130Xe ISOTOPES

石筑一1, 桑建平2, 刘庸3   

  1. (1)Department of Physics, Guizhou Institute for Nationalities, Guiyang 550025, China; (2)Department of Physics, Wuhan University, Wuhan 430072, China; (3)Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China
  • 收稿日期:2000-03-29 修回日期:2000-10-17 出版日期:2001-04-15 发布日期:2005-07-11
  • 基金资助:
    Project supported by the National Natural Science Foundation of the Education Department of Guizhou Province (Grant No. [2000]518).

THE NUCLEAR STRUCTURE AND BACKBENDING PHENOMENON FOR 114-130Xe ISOTOPES

Shi Zhu-yi (石筑一)a, Liu Yong (刘庸)b, Sang Jian-ping (桑建平)c   

  1. a Department of Physics, Guizhou Institute for Nationalities, Guiyang 550025, China; b Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China; c Department of Physics, Wuhan University, Wuhan 430072, China
  • Received:2000-03-29 Revised:2000-10-17 Online:2001-04-15 Published:2005-07-11
  • Supported by:
    Project supported by the National Natural Science Foundation of the Education Department of Guizhou Province (Grant No. [2000]518).

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摘要： In view of interacting boson fermion formalism, a microscopic sdIBM-2 +2q.p. model is used to describe the ground-state band, $\beta$-band, $\gamma$-band and two-quasi-particle band for 114-130Xe isotopes. The theoretical investigations indicate that the backbending is caused by crossing of the two-quasi-proton band and the ground-state band. This result seems to provide a possible way for understanding the backbending phenomenon of 114-130Xe isotopes.

Abstract: In view of interacting boson fermion formalism, a microscopic sdIBM-2 +2q.p. model is used to describe the ground-state band, $\beta$-band, $\gamma$-band and two-quasi-particle band for 114-130Xe isotopes. The theoretical investigations indicate that the backbending is caused by crossing of the two-quasi-proton band and the ground-state band. This result seems to provide a possible way for understanding the backbending phenomenon of 114-130Xe isotopes.

Key words: sdIBM-2+2q.p model, high-spin states, microscopic investigation

中图分类号:  (90 ≤ A ≤ 149)

  • 27.60.+j
21.60.Ev (Collective models) 21.60.Fw (Models based on group theory) 21.10.Re (Collective levels) 21.10.Pc (Single-particle levels and strength functions)