A～110核区手征双重带寻找  

Quest for Chiral Doublet Bands in A～110 Mass Region

作　　者：贺创业[1] 竺礼华[1,2] 吴晓光[1] 温书贤[1] 李广生[1] 王治民[1] 刘颖[1] 崔兴柱[1,3] 张振龙[1,3] 孟锐[1,3] 李雪琴[1] 郑云[1] 马瑞刚[1] 孙慧斌[2] 杨春祥[1] 

机构地区：[1]中国原子能科学研究院核物理研究所,北京102413 [2]深圳大学理学院,广东深圳518060 [3]吉林大学物理系,吉林长春130023

出　　处：《原子能科学技术》2011年第2期129-133,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(10927507;10675171;10105015;10175070;10375092;10575133);国家重点基础研究发展计划资助项目(2007CB815000)

摘　　要：用重离子熔合蒸发反应布居A^110核区缺中子奇奇核106,108Ag的高自旋态,分别在这两个核中找到了类似104Rh中基于πg9/2νh11/2组态的手征双带结构。它们的能级能量、旋称及B(M1)/B(E2)随角动量的变化关系符合手征带的特征。然而,进一步分析发现,106Ag、108Ag双带之间的转动惯量及准粒子角动量顺排存在较大差别,说明两者的晕带和伴带所基于的核芯形变与角动量耦合模式并不一致。High spin states of 106,108Ag were studied by using fusion evaporation reaction on Beijing HI-13 Tandem Accelerator.The negative-parity bands were updated for both nuclei.Doublet bands similar to chiral bands in 104Rh were indentified in 106,108Ag respectively.But there is much difference of the moment of inertia and alignment between the yrast and yrare bands in both of them.It may result from the different deformations of the core and angular momentum coupling mode between valence particles and the inner-core for the yrast and yrare bands.

关 键 词：能级纲图 手征性 转动惯量 旋称 

分 类 号：O571.2[理学—粒子物理与原子核物理]