堵塞效应对超形变核转动惯量的影响  

The Influence of Blocking Effects on Moments of Inertia of Superdeformed Nucleus

作　　者：贺晓涛[1] 刘艳鑫 图雅[1] 于少英[1,2] 

机构地区：[1]内蒙古民族大学理工学院 [2]中国科学院理论物理所,北京100080

出　　处：《内蒙古民族大学学报（自然科学版）》2002年第3期272-276,共5页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：国家自然科学基金资助项目 ( 10 472 0 5 ) ;内蒙古高校重大科研项目 (ZD0 0 17)

摘　　要：采用处理推转壳模型哈密顿量的粒子数守恒 (PNC)方法详细分析了A～ 190区典型的奇奇核194 　T1的六条超形变转动带转动惯量随角频率变化的规律 .特别对奇奇核双重堵塞效应对转动惯量变化的影响进行了微观分析 .计算结果与实验符合得非常好 .根据PNC计算结果 ,分别指定了194 　T1的六条超形变带的阻态 .转动惯量随转动频率的变化 ,主要来源于高N闯入壳 (中子N =7,质子N =6 )的贡献 ,而其它大壳对转动惯量的贡献基本上不随转动频率变化 .In this paper,six superdeformed bands of odd-odd nucleus 194 T1 in A～190 mass region are investigated using the particle-number conserving method for treating the cranked shell model(CSM) Hamiltonian with pairing interactions.In particular,the influence of blocking effects of proton and neutron on moments of inertia is studied in detail.Calculated results agree with experiments very well.Based on our calculation the configurations of six superdeformed bands are assignced.The variation of moments of inertia with rotational frequcncy are mainly attributed to the contribution from the intruder shells(neutron N=7 and proton N=6),whereas the contributions to moment of inertia from other shells remain almost unchanged with rotational frequency.

关 键 词：粒子数守恒方法 堵塞效应 超形变转动带 动力学转动惯量 运动学转动惯量 

分 类 号：O571[理学—粒子物理与原子核物理]