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Relativistic treatment for energy levels and oscillator strength of the lithium atom
Received date: 2011-04-26
Revised date: 2011-05-23
Online published: 2012-07-15
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→1s2np1/2 are also calculated, and the calculations show that inclusion of one- and two-electron excitation configurations will significantly improve the results.
WANG Ze , QU Yi-Zhi , HU Xiao-Li . Relativistic treatment for energy levels and oscillator strength of the lithium atom[J]. Journal of University of Chinese Academy of Sciences, 2012 , 29(4) : 439 -448 . DOI: 10.7523/j.issn.2095-6134.2012.4.002
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