奇A Lu同位素负宇称Yrast带的研究  

Study of the Negative-Parity Yrast States in Odd-A Lu-Isotopes

作　　者：吴兴举 梁渝生[2] 徐进章 陈星蕖 邢正[1] 

机构地区：[1]兰州重离子加速器国家实验室原子核理论研究中心 [2]中国科学院上海原子核研究所,上海201800

出　　处：《高能物理与核物理》2000年第4期342-346,共5页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!(19575025);核工业科学基金!(Y7197AY103)资助

摘　　要：利用粒子一转子模型研究了奇Ａ Ｌｕ核负宇称Ｙｒａｓｔ态带交叉前后的能谱和跃迁几率，理论值和实验值符合得较好．研究表明，^(１６１，１６３，１６５，１６７)Ｌｕ负宇称Ｙｒａｓｔ态是三轴形变的；ａｂ公式正确地描述了带交前后核心的转动惯量随角动量Ｉ的变化．Using Particle-Rotor Model, the energy spectra and electromagnetic transitions ofthe negative-parity yrast states, before and after the band-crossing in odd-A Lu isotopes, areinvestigated and compared with the experimental data. It is noted that before and after theband-crossing the moment of inertia of the core is a smooth function of the total angular mo- mentum I and can be described by the ah formula; The triaxial deformation before and afterthe band-crossing determined from the calculations is appreciably different for 161,163,165 Lu,while it is more or less similar for 167 Lu.

关 键 词：原子核结构 奇A镥同位素 负宇称Yrast态 

分 类 号：O571[理学—粒子物理与原子核物理]