Microscopic Investigation of High-Spin States for Even-Even Nuclei (Part 2): Application to isotones 154Dy, 156Er and 158Yb

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Sang Jianping and Liu Yong. Microscopic Investigation of High-Spin States for Even-Even Nuclei (Part 2): Application to isotones 154Dy, 156Er and 158Yb[J]. Chinese Physics C, 1994, 18(S4): 407-414.
Sang Jianping and Liu Yong. Microscopic Investigation of High-Spin States for Even-Even Nuclei (Part 2): Application to isotones 154Dy, 156Er and 158Yb[J]. Chinese Physics C, 1994, 18(S4): 407-414. shu
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Received: 1993-03-26
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Microscopic Investigation of High-Spin States for Even-Even Nuclei (Part 2): Application to isotones 154Dy, 156Er and 158Yb

  • 1. Department of Physics, Wuhan University, Wuhan, Hubei, China;
  • 2. Institute of Particle Physics, Huazhong Normal University, Wuhan, Hubei, China

Abstract: With the effective interactions consisting of a pairing force, a quadrupole pairing force and a quadrupole-quadrupole force among yalence nucleons, the microscopic approach based on the generalized Dyson expansion theory is applied in studying both the low-lying and high spin states for the isotones 154Dy, 156Er and 158Yb. In the truncated state space, the configurations (sd)N and (sd)N-1 + neutron-pair are assumed, respectively, for the low-lying and high spin states, although the same values of strength parameters are taken in the numerical calculations in the two subspaces. The calculated results are in a good agreement with experiment. In particular, the data of first backbendings are reproduced satisfactorily.

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