原子核高K同质异能态的诱发γ辐射  

Induced γ-radiation of High-K Isomer States of Nuclei

作　　者：石钰[1,2] 田文栋[1] 马余刚[1] 蔡翔舟[1] 方德清[1] 王鲲[1,2] 陈金根[1] 王宏伟[1] 郭威[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院研究生院,北京100049

出　　处：《原子核物理评论》2008年第4期332-341,共10页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(10328259,10405032,10405033,10475108);上海科技发展基金启明星计划项目(06QA14062);国家重大基础研究发展规划资助项目(G200077404);中国科学院国防科技创新基金资助项目(CXJJ-216)~~

摘　　要：介绍了原子核高K同质异能态潜在的应用价值及国内外研究的进展。总结了形成同质异能态的3种主要物理机制。说明了高K同质异能态的应用原理是将其激发到更高的不稳定的K混合态上,再发生诱发退激,形成γ瀑,释放其存储的能量。同时又介绍了K混合态的3种主要产生机制。最后分析了178Hfm2诱发退变的实验,讨论了这些实验的区别和与角动量投影壳模型计算结果的差异。The nuclear isomer states have great potential value and theoretical researches are presented here. There are three tion of the isomer states. The principle of releasing the energy of application. The important experimental kinds of physics mechanism for the forma-stored in the isomer is to excite it to higher states, K-mixing states, which can spontaneously decay to the ground state forming the γ-cascade. After introducting the three ways to form the K-mixing states, we analyzed experiments on the most prospective isomer ^178Hf^m2, discussed the key differences between these experiments and suggested that the Projected Shell Model （PSM） can be helpful to confirm the occurrence of the K-mixing states and would work out characteristics of the induced decay.

关 键 词：诱发γ辐射 同质异能态 K混合态 

分 类 号：O571.323[理学—粒子物理与原子核物理] O571.325[理学—物理]