传统中子幻数稳定性的研究  

Stability of traditional neutron magic numbers

作　　者：丁斌刚[1] 张大立[1] 鲁定辉[2] 

机构地区：[1]浙江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310000

出　　处：《物理学报》2009年第2期865-870,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10675046)资助的课题~~

摘　　要：在考虑了BCS理论的相对论平均场模型框架内,通过系统研究N=8,20,28,50,82和126六条同中子素链中每个元素费米面附近的单粒子能级间隔、粒子数占有概率比以及原子核体系的粒子数偏离随质子数的变化规律,讨论了传统中子幻数的壳结构在从中子滴线区到质子滴线区整个核谱上的稳定性,预言只有在轻核的丰中子区域,传统的中子幻数效应才可能消失,并把计算结果和最近的文献报道作了比较.By systematically analyzing the single particle level and the occupation probability near the Fermi surface,and the rule of nuclear particle number deviations with proton numbers for N=8,20,28,50,82,126 neutron chains within the relativistic mean-field model with BCS theory,we have discussed the stability of the shell structure for the traditional neutron magic in the whole range of nuclear spectrum from neutron line to proton line,and predicted that traditional neutron magic number effect shall possibly disappear only in light neutron-rich nuclei. Our results are also compared with the results of other recent reports.

关 键 词：相对论平均场模型 能级间隔 占有概率 粒子数偏离 

分 类 号：O571.5[理学—粒子物理与原子核物理] O571[理学—物理]