用相对论平均场理论研究近滴线区原子核传统幻数的消失和新幻数的产生  

The disappearance of conventional magic numbers and the appearance of new numbers near drip-line region studied using relativistic mean-field plus BCS model

作　　者：丁斌刚[1] 鲁定辉[2] 张大立[1] 

机构地区：[1]湖州师范学院理学院,湖州313000 [2]浙江大学近代物理中心,杭州310027

出　　处：《物理学报》2007年第12期6905-6910,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10475026;10675046);浙江省自然科学基金(批准号:Y604060)资助的课题.~~

摘　　要：提出了一种从理论上检验壳效应的方法.在考虑了由Bardeen,Cooper和Schrieffer提出的金属超导理论(BCS方法)的相对论平均场理论框架内,通过计算粒子数的涨落,发现涨落的大小和核的壳结构有紧密的关系,进而研究了滴线区一些传统幻数的消失和新幻数的产生.A theoretical method which is applied to examine the shell effects is presented. Namely, by calculating the particle number fluctuation in the framework of the relativistic mean-field model including BCS method, we find that the size of the particle number fluctuation is related to the nuclear shell structure. Based on this method, the disappearance of conventional magic numbers and the presence of new magic numbers near drip-line region are studied.

关 键 词：相对论平均场理论 粒子数涨落 幻数 壳效应 

分 类 号：O571[理学—粒子物理与原子核物理]