摘要
This paper develops a Fortran code which is capable to construct the simplest LS eigenfunctions for desired symmetry and determine all permitted atomic LS spectral terms under a given orbital occupancy by implementing and extending the Schaefer and Harris method. Examples （in some cases the most complete set to date） of multiple spectroscopic terms of LS coupling of atomic states for both non-equivalent and equivalent electronic configurations are given. It also corrects a few observed errors from the recent literature.
This paper develops a Fortran code which is capable to construct the simplest LS eigenfunctions for desired symmetry and determine all permitted atomic LS spectral terms under a given orbital occupancy by implementing and extending the Schaefer and Harris method. Examples （in some cases the most complete set to date） of multiple spectroscopic terms of LS coupling of atomic states for both non-equivalent and equivalent electronic configurations are given. It also corrects a few observed errors from the recent literature.
基金
partially supported by the National High Technology Research and Development Program of China (Grant No2004AA306H10)
the program 04EP111/ENTEP-2004 of the operational program ‘Competitiveness’ of the Greek General Secre-tariat of Research and Technology and the program ‘Excellence in the Research Institutes supervised by the General Secretariat for Research and Technology / Ministry of Development’, Greece
