文献类型：期刊文献

中文题名：氦原子1snd（n=4-11）组态下^1D-^3D谱项分裂值的计算

英文题名：Calculation of helium 1D-3D term intervals for 1snd( n = 4-11) states

作者：贺黎明[1];曹伟[1];陈学谦[1];朱云霞[1]

机构：[1]华东理工大学物理系,上海200237

年份：2005

卷号：54

期号：11

起止页码：5077

中文期刊名：物理学报

外文期刊名：Acta Physica Sinica

收录：CSTPCD;;EI(收录号：2005489513384);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(批准号:10074014);华东理工大学校基金资助的课题.~~

语种：中文

中文关键词：氦原子,Rydberg态,多体微扰,组态波函数,能级分裂;计算表;氦原子;分裂;谱项;组态;多体微扰理论;Rydberg态;近似算法;束缚态

外文关键词：helium, Rydberg state, many-body perturbation theory （MBPT）, configuration wave function, term interval

摘要：利用多体微扰理论(MBPT)计算了氦原子1snd(n=4—11)组态的1D—3D谱项分裂值.基于两种不同的模型分别计算Rayleigh-Shr dinger微扰展开式中仅含束缚态的部分和包含连续态的部分.对于束缚态,较严格地通过自洽迭代求解Hartree方程构造零级近似波函数,并利用积分处理方法对无穷项求和中的余项给出了近似算法.而对于连续态波函数,则采用简化的氢原子势模型.按照Rayleigh-Shr dinger微扰展开方法,将Rydberg态的微扰论修正计算至三级.计算表明,二级和三级微扰对谱项分裂的贡献主要来自于束缚态求和部分.单态-三重态精细结构分裂的计算结果与两组实验结果基本符合.
With many-body perturbation theory （MBPT）, ^1D-^3D term intervals of helium l snd（n = 4-11） configurations have been calculated. Based on two different models, Rayleigh-Schoedinger perturbation expansion terms only consisting of bound states and those of continua are calculated respectively. For bound states, the zeroth-order wave functions are strictly generated from self-iteration solutions of Hartree equation and residues of infinite perturbation series are dealt with by integral processing method. For continuum parts, a simplified hydrogen potential model is adopted. According to Rayleigh-Schoedinger expansion, the perturbation corrections to Rydberg states have been evaluated up to the third-order terms. From the calculation, the energy splittings are mainly attributed to bound parts. Singlet-triplet level splittings yielded here are found to agree quite well with two sets of experimental results.