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

作     者：Zhen-Hua Zhang 张振华

作者机构：Mathematics and Physics Department North China Electric Power University Department of Physics and Astronomy Mississippi State University 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2019年第43卷第5期

页      面：86-92页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Supported by National Natural Science Foundation of China(11875027,11505058,11775112,11775026,11775099) Fundamental Research Funds for the Central Universities(2018MS058) the program of China Scholarships Council(201850735020) 

主　　题：particle-number-conserving method pairing correlations antimagnetic rotation 

摘      要：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.