X_α交换参数对钠原子激发态能级的影响  

The effects of exchange parameter model on Na atom excited states energy levels

作　　者：吕延波[1] 鹿双岭[1] 葛自明[1] 贺黎明[1] 

机构地区：[1]华东理工大学物理系,上海200237

出　　处：《原子与分子物理学报》2006年第4期679-682,共4页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(NSAF10575037)

摘　　要：在自由电子气近似下,可得到多种不同的交换参数的理论算法.这些理论方法的优劣不能从理论上确定.本文采用SIC-Xα的过渡态算法,利用不同的Xα交换参数理论模型计算了钠原子主线系4p^15p的激发态能级,并与实验结果进行了比较.比较结果表明,在这个体系下,基于Virial定理的理论参数模型明显优于其它理论方法.由此我们找到了一种能给出较为精确的高激发态波函数的简便计算方法,而且能够为研究高激发态原子的外场效应和Rydberg原子结构的精确计算等提供基矢波函数.Based on free-electron gas approximation, many theoretical models with exchange parameters are obtained. Merit of the models cannot be confirmed in theory. With transitional states method depended on SIC-Xα, excited states energy levels （4p- 15p ） of Na atom are calculated with various exchange parameter models. Results are compared with experimental data and comparisons indicate that the exchange parameter model based on Virial theorem is better than the other theoretical methods in this system. Thus we can obtain a quite simple method that can offer quite precise wave functions for highly excited states. And these wave functions can be used as basis sets applied to more accurate calculation of Rydberg atomic structure and its external field effects.

关 键 词：交换参数 激发态 主线系 钠原子 

分 类 号：O562[理学—原子与分子物理]