Fine-Structure Splittings of Nitrogen Isoelectronic Sequence: Competitions among Spin--Orbit Interactions, Breit Interactions and Electron Correlations
WANG Xiao-Lu1, CHEN Shao-Hao2, HAN Xiao-Ying2, 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
Fine-Structure Splittings of Nitrogen Isoelectronic Sequence: Competitions among Spin--Orbit Interactions, Breit Interactions and Electron Correlations
WANG Xiao-Lu1;CHEN Shao-Hao2;HAN Xiao-Ying2;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
摘要Using the multi-configuration Dirac--Fock self-consistent field method and the relativistic configuration interaction method with quantum-electrodynamics corrections performed by the GRASP code, we calculate the fine-structure energy levels of the ground-state configuration (1s22s22p3) of the nitrogen isoelectronic sequence, according to the L-S coupling scheme with atomic number Z up to 22. Based on the calculated results, we elucidate the mechanism of the orderings of fine-structure energy levels of 2D3/2,5/2 and 2P1/2,3/2 respectively, i.e. for 2D3/2,5/2 orderings, the competition between the spin--orbit interactions and the Breit interactions; for 2P1/2,3/2 orderings, the electron correlations, especially the electron correlations owing to the 2p5 configuration interactions.
Abstract：Using the multi-configuration Dirac--Fock self-consistent field method and the relativistic configuration interaction method with quantum-electrodynamics corrections performed by the GRASP code, we calculate the fine-structure energy levels of the ground-state configuration (1s22s22p3) of the nitrogen isoelectronic sequence, according to the L-S coupling scheme with atomic number Z up to 22. Based on the calculated results, we elucidate the mechanism of the orderings of fine-structure energy levels of 2D3/2,5/2 and 2P1/2,3/2 respectively, i.e. for 2D3/2,5/2 orderings, the competition between the spin--orbit interactions and the Breit interactions; for 2P1/2,3/2 orderings, the electron correlations, especially the electron correlations owing to the 2p5 configuration interactions.
WANG Xiao-Lu;CHEN Shao-Hao;HAN Xiao-Ying;LI Jia-Ming;. Fine-Structure Splittings of Nitrogen Isoelectronic Sequence: Competitions among Spin--Orbit Interactions, Breit Interactions and Electron Correlations[J]. 中国物理快报, 2008, 25(3): 903-906.
WANG Xiao-Lu, CHEN Shao-Hao, HAN Xiao-Ying, LI Jia-Ming,. Fine-Structure Splittings of Nitrogen Isoelectronic Sequence: Competitions among Spin--Orbit Interactions, Breit Interactions and Electron Correlations. Chin. Phys. Lett., 2008, 25(3): 903-906.
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