超形变奇-奇核^(194)Tl中的双堵塞效应  

Double-Blocking Effects in Odd-odd Superdeformed Nucleus^(194)Tl

作　　者：贺晓涛[1] 刘树新[2] 于少英[1] 赵恩广[2] 

机构地区：[1]内蒙古民族大学理工学院,通辽028043 [2]中国科学院理论物理所

出　　处：《高能物理与核物理》2003年第2期124-126,共3页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 10 14 72 0 5;19835 0 10 ;10 0 470 0 1);国家重点基础研究发展规划 (G2 0 0 0 0 7740 7);中国科学院知识创新工程重要方向性项目 (KJCX2 -SW -N0 2 )资助~~

摘　　要：采用处理含有对力的推转壳模型的粒子数守恒方法研究了A～ 190区奇奇核194 Tl中 6条超形变带 .计算结果与实验符合得非常好 .根据我们的PNC计算结果 ,分别指定了194 Tl的 6条超形变带的组态 ,详细分析了质子和中子的堵塞效应对转动惯量的影响 .转动惯量随转动频率的变化主要来源于高N闯入壳 (对中子N =7,对质子N =6)的贡献 ,而其他大壳对转动惯量的贡献基本上不随转动频率变化 .Six superdeformed bands of odd-odd nucleus 194Tl in A～190 mass region are studied using the particle-number conserving method for treating the cranked shell model with pairing interactions. Calculated results agree with experiments very well. Based on our calculation the configurations of the six superdeformed bands are assigned and the influence of blocking effects of proton and neutron on moments of inertia is investigated in detail. The variation of moments of inertia with rotational frequency is mainly attributed to 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：^194TI 铊核 奇-奇核 粒子数守恒方法 超形变 转动带 动力学 运动学 转动惯性 堵塞效应 推转壳模型 

分 类 号：O571.1[理学—粒子物理与原子核物理]