中国物理B ›› 2004, Vol. 13 ›› Issue (5): 662-669.doi: 10.1088/1009-1963/13/5/016

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Energy and fine structure of 1s2np(n≤9) states for lithium-like systems from Z=11 to 20

胡木宏, 王治文   

  1. Physics Department, Liaoning Normal University, Dalian 116029, China; Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2003-08-01 修回日期:2003-10-15 出版日期:2004-05-06 发布日期:2005-07-06
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10174029).

Energy and fine structure of 1s2np(n≤9) states for lithium-like systems from Z=11 to 20

Hu Mu-Hong (胡木宏), Wang Zhi-Wen (王治文)   

  1. Physics Department, Liaoning Normal University, Dalian 116029, China; Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2003-08-01 Revised:2003-10-15 Online:2004-05-06 Published:2005-07-06
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10174029).

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摘要： A new variation method is extended to study the atomic systems with higher nuclear charges and in more highly excited states. The non-relativistic energies of 1s^2np (n≤9) states for the lithium-like systems from Z=11 to 20 are calculated using a full-core-plus-correlation method with multi-configuration interaction wavefunctions. Relativistic and mass-polarization effects on the energy are calculated as the first-order perturbation corrections. The fine structures are determined from the expectation values of spin-orbit and spin-other-orbit interaction operators in the Pauli－Breit approximation. The quantum-electrodynamics correction is also included. Our results are compared with experimental data in the literature.

关键词: lithium-like system, full-core plus correlation, excitation energy, fine structure

Abstract: A new variation method is extended to study the atomic systems with higher nuclear charges and in more highly excited states. The non-relativistic energies of 1s2np (n≤9) states for the lithium-like systems from Z=11 to 20 are calculated using a full-core-plus-correlation method with multi-configuration interaction wavefunctions. Relativistic and mass-polarization effects on the energy are calculated as the first-order perturbation corrections. The fine structures are determined from the expectation values of spin-orbit and spin-other-orbit interaction operators in the Pauli－Breit approximation. The quantum-electrodynamics correction is also included. Our results are compared with experimental data in the literature.

Key words: lithium-like system, full-core plus correlation, excitation energy, fine structure

中图分类号:  (Fine and hyperfine structure)

  • 32.10.Fn
31.10.+z (Theory of electronic structure, electronic transitions, and chemical binding)