利用WBEPM模型和稳定变分法计算氦原子的极化率和色散系数  

Calculation of multipole polarizability and dispersion coefficients for helium by WBEPM and variationally stable procedure

作　　者：黄时中[1] 邓泽森[1] 张勇[1] 

机构地区：[1]安徽师范大学物理与电子信息学院,芜湖241000

出　　处：《原子与分子物理学报》2015年第5期728-732,共5页Journal of Atomic and Molecular Physics

基　　金：安徽省自然科学基金项目(11040606M15);国家自然科学基金专项基金项目(11047019)

摘　　要：以最弱受约束电子势模型(WBEPM)理论为基础,建立了计算氦原子多极动态极化率和相互作用色散系数的稳定变分方法 .导出了该方法中所涉及的矩阵元和线性方程组的解析表达式.作为应用,具体计算了基态氦原子的极化率和两体色散系数,将计算结果与用其他方法所得到的结果进行了比较,数据基本一致.Based on the weakest bound electron potential model （WBEPM） theory, method of calculating the muhipole dynamic polarizability and dispersion coefficients for Helium by a variationally stable proceaure is es- tablished. The matrix elements and a group of linear equations, involving in this approach, are derived analyti- cally. As an application, the polarizability and two -body dispersion coefficients between Helium atoms in their ground states are calculated concretely and are compared with those calculated previously by other procedures. It is found that the calculated results are consistent with those of others.

关 键 词：氦原子 WBEPM 稳定变分方法 极化率 色散系数 

分 类 号：O562.4[理学—原子与分子物理]