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Interesting Features of n2D Rydberg Series Fine-Structure Splittings along the Sodium-Like Isoelectronic Sequence |
| WANG Xiao-Lu1, LIU Ling-Tao1, GAO Xiang1, SHEN Chun1, LI Jia-Ming 1,2 |
| 1Department of Physics, Shanghai Key Laboratory for Laser Fabrication and Material Science, Shanghai Jiaotong University, Shanghai 2002402The Key Laboratory of Atomic and Molecular Nanosciences of the Ministry of Education, Department of Physics, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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WANG Xiao-Lu, LIU Ling-Tao, GAO Xiang et al 2008 Chin. Phys. Lett. 25 4244-4247 |
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Abstract Using a simplified multi-configuration Dirac--Fock (SMCDF) scheme based on the multi-configuration Dirac--Fock (MCDF) theory, we study the systematic variations of the fine-structure splittings of n2D3/2,5/2 Rydberg series along the sodium-like isoelectronic sequence, i.e. the fine-structure orderings vary with increasing atomic number Z. The competition between the spin-orbit interactions and the exchange interactions due to relativistic effects of the nd orbital wavefunctions well explain such variations. Furthermore, the effect of Breit interactions which plays the secondary role is studied.
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| Keywords:
31.30.Jv
32.10.Fn
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Received: 01 September 2008
Published: 27 November 2008
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