中国物理B ›› 2008, Vol. 17 ›› Issue (3): 908-914.doi: 10.1088/1674-1056/17/3/028

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Behaviours of the excited states 1s2np along lithium isoelectronic sequence from Z=11 to 20

胡木宏, 王治文   

  1. School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, China
  • 收稿日期:2007-05-18 修回日期:2007-07-02 出版日期:2008-03-04 发布日期:2008-03-04
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10474029 and 10774063).

Behaviours of the excited states 1s2np along lithium isoelectronic sequence from Z=11 to 20

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

  1. School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, China
  • Received:2007-05-18 Revised:2007-07-02 Online:2008-03-04 Published:2008-03-04
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10474029 and 10774063).

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摘要： Based on the obtained energy values of 1s$^{2}n$p ($n \le $ 9) states for lithium-like systems from $Z$=11 to 20 (by the authors of this paper: Hu M H and Wang Z W 2004 \textit{Chin. Phys.} \textbf{13} 662), this paper determines the quantum defects, as slowly varying function of energy, of this Rydberg series. Using them as input, it can predict the energies of any highly excited states below the ionization threshold for this series according to the quantum defect theory. The regularities of variation for quantum defects of the series along this isoelectronic sequence are physically analysed and discussed. The screening parameters, which are equal to the effective screening charge of the core-electrons, are also obtained.

关键词: lithium-like system, excited state, quantum defect, screening parameter

Abstract: Based on the obtained energy values of 1s$^{2}n$p ($n \le $ 9) states for lithium-like systems from $Z$=11 to 20 (by the authors of this paper: Hu M H and Wang Z W 2004 Chin. Phys. 13 662), this paper determines the quantum defects, as slowly varying function of energy, of this Rydberg series. Using them as input, it can predict the energies of any highly excited states below the ionization threshold for this series according to the quantum defect theory. The regularities of variation for quantum defects of the series along this isoelectronic sequence are physically analysed and discussed. The screening parameters, which are equal to the effective screening charge of the core-electrons, are also obtained.

Key words: lithium-like system, excited state, quantum defect, screening parameter

中图分类号:  (Calculations and mathematical techniques in atomic and molecular physics)

  • 31.15.-p
31.15.vj (Electron correlation calculations for atoms and ions: excited states) 31.30.J- (Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions)