N=28丰中子核的形变和形状共存研究  

The study of shape and shape-coexistence of neutron rich nuclei around N=28

作　　者：支启军[1] 

机构地区：[1]贵州师范大学物理与电子科学学院,贵阳550001

出　　处：《物理学报》2011年第5期188-193,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10865004);贵州省科学技术基金(批准号:[2008]2254号);贵州师范大学博士基金资助的课题~~

摘　　要：利用同位旋依赖的尼尔逊势,在宏观-微观理论框架下,计算了幻数N=28同中子链上原子核的性质,研究了N=28同中子链上原子核的形变和形状共存现象.研究结果表明,N=28这个幻数在Na,Mg,Al同位素链上有着强的形状共存现象.此外,计算表明42Si的基态为扁椭球,同时在Si同位素链上的形状共存现象相对较弱.With the isospin-dependent Nilsson potential,we calculate the properties of the N = 28 nuclei in the framework of macroscopic-microscopic model.The shape and shape coexistence of these nuclei are calculated and discusses.It is shown that strong shape coexistences occur in the ground state of nuclei with N = 28 in Na,Mg and Al isotopes.It is pointed out that,the ground state of 42Si is oblate shape and there is no obvious shape coexistence for 42Si.

关 键 词：同位旋 幻数 形变 形状共存 

分 类 号：O571.5[理学—粒子物理与原子核物理]