锂原子能级和光学振子强度的相对论性理论研究

doi:10.7523/j.issn.2095-6134.2012.4.002

中国科学院大学学报 ›› 2012, Vol. 29 ›› Issue (4): 439-448.DOI: 10.7523/j.issn.2095-6134.2012.4.002

锂原子能级和光学振子强度的相对论性理论研究

王泽, 屈一至, 胡骁骊

中国科学院研究生院材料科学与光电技术学院, 北京 100049

收稿日期:2011-04-26 修回日期:2011-05-23 发布日期:2012-07-15
通讯作者: 屈一至
基金资助:
国家自然科学基金(10876043)资助

Relativistic treatment for energy levels and oscillator strength of the lithium atom

WANG Ze, QU Yi-Zhi, HU Xiao-Li

College of Materials Science and Opto-Electronic Technology,Graduate University, Chinese Academy of Sciences,Beijing 100049,China

Received:2011-04-26 Revised:2011-05-23 Published:2012-07-15

摘要/Abstract

摘要：

应用相对论多通道理论,计算锂原子1s²ns ²S,1s²np ²P,1s²nd ²D和1s²nf ²F系列束缚态和相邻连续态的本征量子数亏损,并拟合得到量子亏损函数,进而计算1s²np ²P系列n=7~60的电离能和量子数亏损,计算结果与最新的实验值相符合. 采用相对论多组态相互作用方法计算锂原子1s²2s→1s²np_1/2偶极跃迁光学振子强度,结果表明,通过包含单、双电子激发组态考虑电子关联作用,计算结果有很大的改善.

关键词: 相对论多通道理论, 组态相互作用理论, 量子数亏损, 光学振子强度

Abstract:

Relativistic multichannel theory is used to calculate eigen quantum defects of 1s²ns ²S, 1s²np ²P, 1s²nd ²D, and 1s²nf ²F of lithium, and then the quantum defect functions are fitted. Ionization potentials and quantum defects of 1s²np ²P(n=7~60) are obtained, and the results are in good agreement with the latest experiment. Using the relativistic configuration interaction method, the dipole transition oscillator strength of 1s²2s→1s²np_1/2 are also calculated, and the calculations show that inclusion of one- and two-electron excitation configurations will significantly improve the results.

Key words: relativistic multichannel theory, configuration interaction theory, quantum defect, oscillator strength

中图分类号:

O562

王泽, 屈一至, 胡骁骊. 锂原子能级和光学振子强度的相对论性理论研究[J]. 中国科学院大学学报, 2012, 29(4): 439-448.

WANG Ze, QU Yi-Zhi, HU Xiao-Li. Relativistic treatment for energy levels and oscillator strength of the lithium atom[J]. , 2012, 29(4): 439-448.

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锂原子能级和光学振子强度的相对论性理论研究

Relativistic treatment for energy levels and oscillator strength of the lithium atom

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