摘要
在单粒子壳模型下,研究了N=8及N=9同中子素的基态性质．通过在伍兹-萨克逊势深中引入同位旋依赖项,考虑了同位旋效应对核平均势的影响．理论计算的均方根半径和自旋宇称值与实验结果整体上符合较好,尤其是N=9同中子素中的2s1／2与1d5／2中子能级间的能级反转得到了较好的解释．计算结果还显示在14B和15C基态中存在单中子晕．
The ground-state properties of N=8 and N=9 isotones are investigated in the framework of the single-particle shell model. The isospin effect on the average nuclear potential is taken into account by introducing an isospin-dependent term in the depth of the Woods-Saxon potential. The theoretical results of RMS radii and spin-parity values are in agreement with the experimental data. Especially, the level inversion between neutron levels 2s1/2 and 1d5/2 in N=9 isotones is reproduced. A detailed discussion on numerical results is given and one-neutron halos in the ground states of ^14B and ^15C are presented.
出处
《高能物理与核物理》
CSCD
北大核心
2007年第4期361-365,共5页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10125521,10535010)国家重点基础研究发展规划项目(G2000077400)资助~~
