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

Sang Jianping; Liu Yong

Chinese Physics C> 1994, Vol. 18> Issue(S4) : 407-414

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

Sang Jianping ¹ ,
Liu Yong ²

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

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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.
- eflFective interactions among the valence nucleons ,
- microscopic approach ,
- low-lying and high spin states ,
- 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.

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Received: 1993-03-26

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Sang Jianping ^1,
Liu Yong ^2,

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

Received Date: 1993-03-26

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.