Nonadditivity in moments of inertia of high-K multiquasiparticle bands  

作　　者：张振华 吴熙 雷奕安 曾谨言 

机构地区：[1]School of Physics,Peking University

出　　处：《Chinese Physics C》2008年第9期681-686,共6页中国物理C（英文版）

基　　金：National Natural Science Foundation of China (10675006,10675007,10435010)

摘　　要：The experimental high-K 2- and 3-quasiparticle bands of well deformed rare-earth nuclei are analyzed. It is found that there exists significant nonadditivity in moments of inertia （MOIs） for these bands. The microscopic mechanism of the rotational bands is investigated by the particle number conserving （PNC） method in the frame of cranked shell model with pairing, in which the blocking effects are taken care of exactly. The experimental rotational frequency dependence of these bands is well reproduced in PNC calculations. The nonadditivity in MOIs originates from the destructive interference between Pauli blocking effects.The experimental high-K 2- and 3-quasiparticle bands of well deformed rare-earth nuclei are analyzed. It is found that there exists significant nonadditivity in moments of inertia （MOIs） for these bands. The microscopic mechanism of the rotational bands is investigated by the particle number conserving （PNC） method in the frame of cranked shell model with pairing, in which the blocking effects are taken care of exactly. The experimental rotational frequency dependence of these bands is well reproduced in PNC calculations. The nonadditivity in MOIs originates from the destructive interference between Pauli blocking effects.

关 键 词：particle-number-conserving method BCS theory nuclear moments of inertia 

分 类 号：O571[理学—粒子物理与原子核物理]