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Chinese Physics, 2004, Vol. 13(6): 850-854    DOI: 10.1088/1009-1963/13/6/011
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

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)
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
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.
Keywords:  Cu-like Au$^{50+}$ion      dielectronic recombination  
Received:  25 February 2003      Revised:  19 December 2003      Accepted manuscript online: 
PACS:  34.80.Lx (Recombination, attachment, and positronium formation)  
  31.15.Ne  
  32.80.Dz  
Fund: Project supported by the National High Technology Development Programme of China (Grant No 2002AA84TS12).

Cite this article: 

Yang Tian-Li (杨天丽), Jiang Gang (蒋刚), Zhu Zheng-He (朱正和) Dielectronic recombination rate coefficient for Cu-like Au50 ion 2004 Chinese Physics 13 850

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