中国物理B ›› 2004, Vol. 13 ›› Issue (6): 850-854.doi: 10.1088/1009-1963/13/6/011

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Dielectronic recombination rate coefficient for Cu-like Au50 ion

杨天丽, 蒋刚, 朱正和   

  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • 收稿日期:2003-02-25 修回日期:2003-12-19 出版日期:2004-07-05 发布日期:2005-07-05
  • 基金资助:
    Project supported by the National High Technology Development Programme of China (Grant No 2002AA84TS12).

Dielectronic recombination rate coefficient for Cu-like Au50 ion

Yang Tian-Li (杨天丽), Jiang Gang (蒋刚), Zhu Zheng-He (朱正和)   

  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
  • Received:2003-02-25 Revised:2003-12-19 Online:2004-07-05 Published:2005-07-05
  • Supported by:
    Project supported by the National High Technology Development Programme of China (Grant No 2002AA84TS12).

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摘要： The rate coefficients α^{DR} of dielectronic recombination (DR) for Cu-like Au^{50+} ion collided with the incident free electron are calculated based on the quasi-relativistic multi-configuration Hartree－Fock theory. The results clearly show that the α^{DR} of all recombination channels exhibits resonance characters with electron temperature. At lower temperatures, the recombination for electrons caused by 4s excitation is dominant through outer electron radiative transitions among the intermediate doubly excited autoionizing levels, in which the most components come from 3d^{10}5pns states, whereas with increasing electron temperature, DR caused by 3d excitation turns out to be dominant, and the contribution from the 3d^94s4fnf state to the total rate coefficient of electron 3d is the largest with α^{DR}=1.15×10^{- 11} cm^3·s^{-1} at an electron temperature of T_e=0.35 keV. Under this condition, there exists a strong competition between the two types of recombination channels.

关键词: Cu-like Au^{50+}ion, dielectronic recombination

Abstract: The rate coefficients $\alpha^{\rm DR}$ of dielectronic recombination (DR) for Cu-like Au$^{50+}$ ion collided with the incident free electron are calculated based on the quasi-relativistic multi-configuration Hartree－Fock theory. The results clearly show that the $\alpha^{\rm DR}$ of all recombination channels exhibits resonance characters with electron temperature. At lower temperatures, the recombination for electrons caused by 4s excitation is dominant through outer electron radiative transitions among the intermediate doubly excited autoionizing levels, in which the most components come from 3d$^{10}$5pns states, whereas with increasing electron temperature, DR caused by 3d excitation turns out to be dominant, and the contribution from the 3d$^9$4s4fnf state to the total rate coefficient of electron 3d is the largest with $\alpha^{\rm DR}=1.15\times10^{- 11}$ cm$^3$$\cdot$s$^{-1}$ at an electron temperature of $T_{\rm e}=0.35$ keV. Under this condition, there exists a strong competition between the two types of recombination channels.

Key words: Cu-like Au$^{50+}$ion, dielectronic recombination

中图分类号:  (Recombination, attachment, and positronium formation)

  • 34.80.Lx