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Difference in moments of inertia and paring interaction strength in superdeformed nuclei

Science China Mathematics 1997年第6期40卷 652-657页

作者：雷奕安林纯镇曾谨言 Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China Department of Physics Peking University Beijing 100871 China Department of Physics Peking University Beijing 100871 China Also at Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China.

The difference in the bandhead moments of inertia between the superdeformed (SD) band 194Hg(1) and the two-quasiparticle SD bands 194Hg(2,3) was investigated using the particle-number-conserving treatment for the cranked shell model Hamiltonian, and the pairing interaction strength in SD nuclei is estimated to be much weaker than that in normally deformed nuclei.

关键词： super-deformed band difference in moments of inertia particle-number-conserving treatment pairing interaction strength.

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Theoretical investigation of the antimagnetic rotation in ^(104)Pd

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Chinese Physics C 2019年第5期43卷 86-92页

作者： Zhen-Hua Zhang Mathematics and Physics Department North China Electric Power University Department of Physics and Astronomy Mississippi State University

The particle-number-conserving method based on the cranked shell model is used to investigate the antimagnetic rotation band in ^(104) Pd. The experimental moments of inertia and reduced B(E2) transition probabilities are reproduced well. The J^((2))/B(E2) ratios are also discussed. The occupation probability of each orbital close to the Fermi surface and the contribution of each major shell to the total angular momentum alignment as function of rotational frequency are analyzed. The backbending mechanism of the ground state band in ^(104) Pd is understood clearly and the configuration of the antimagnetic rotation after backbending is clarified. In addition, the crossing of a four quasiparticle state with this antimagnetic rotation band is also predicted. By examining the closing of the angular momenta of four proton holes towards the neutron angular momentum, the "two-shears-like" mechanism for this antimagnetic rotation is investigated and two stages of antimagnetic rotation in ^(104) Pd are clearly seen.

关键词： particle-number-conserving method pairing correlations antimagnetic rotation

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