中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2033-2039.doi: 10.1088/1674-1056/17/6/017

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Theoretical study on decay of the 4d core-excited states of Cs III

丁晓彬1, 董晨钟2, Stephan Fritzsche3   

  1. (1)College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; (2)College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000, China ; (3)Department of Physics, University of Kassel, Heinrich-Plett-Stralphabeta e 40, D- 34132, Kassel, Germany
  • 收稿日期:2007-12-02 修回日期:2007-12-25 出版日期:2008-06-20 发布日期:2008-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10434100 and 10774122), the Core-University Program between Japanese Society of Promotion of Science and Chinese Academy of Sciences, the Foundation of Center of theoretical

Theoretical study on decay of the 4d core-excited states of Cs III

Ding Xiao-Bin(丁晓彬)a), Dong Chen-Zhong(董晨钟)a)b)†, and Stephan Fritzschec)   

  1. a College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China; b Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator of Lanzhou, Lanzhou 730000, China ; c Department of Physics, University of Kassel, Heinrich-Plett-Stralphabeta e 40, D- 34132, Kassel, Germany
  • Received:2007-12-02 Revised:2007-12-25 Online:2008-06-20 Published:2008-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 10434100 and 10774122), the Core-University Program between Japanese Society of Promotion of Science and Chinese Academy of Sciences, the Foundation of Center of theoretical

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摘要： In a recent XUV photoabsorption spectrum of Cs III ions by Cummings and O'Sullivan [2001 {\em J. Phys.} B {\bf 34} 199], rather large linewidths were found for the ${\rm 4d}^{\,9} {\rm 5s}^2 {\rm 5p}^6 \,- \,{\rm 4d}^{\,10} {\rm 5s}^2 {\rm 5p}^5$ transition which are quite in disagreement with corresponding quasi-relativistic multiconfiguration Hartree--Fock (MCHF) calculation. In the present work, a detailed multiconfiguration Dirac-Fock study has been carried out to explore this discrepancy. Owing to the detailed consideration of electron correlation effects, some 'forbidden' Auger decay channels, such as ${\rm 4d}^{\,10} {\rm 5s}^2 {\rm 5p}^3 {\rm 5d} $ and ${\rm 4d}^{\,10} {\rm 5s}^0 {\rm 5p}^6 $, would become `open'. As a result, remarkable improvement of the linewidths has been obtained in our calculation. Furthermore, the theoretical Auger spectrum of the ${\rm 4d}^{\,9} {\rm 5s}^2 {\rm 5p}^6$ core-excited states of Cs III ions is given in the present work.

关键词: correlation effects, linewidth, Auger decay

Abstract: In a recent XUV photoabsorption spectrum of Cs III ions by Cummings and O'Sullivan [2001 J. Phys. B  34 199], rather large linewidths were found for the ${\rm 4d}^{\,9} {\rm 5s}^2 {\rm 5p}^6 \,- \,{\rm 4d}^{\,10} {\rm 5s}^2 {\rm 5p}^5$ transition which are quite in disagreement with corresponding quasi-relativistic multiconfiguration Hartree--Fock (MCHF) calculation. In the present work, a detailed multiconfiguration Dirac-Fock study has been carried out to explore this discrepancy. Owing to the detailed consideration of electron correlation effects, some 'forbidden' Auger decay channels, such as ${\rm 4d}^{\,10} {\rm 5s}^2 {\rm 5p}^3 {\rm 5d} $ and ${\rm 4d}^{\,10} {\rm 5s}^0 {\rm 5p}^6 $, would become `open'. As a result, remarkable improvement of the linewidths has been obtained in our calculation. Furthermore, the theoretical Auger spectrum of the ${\rm 4d}^{\,9} {\rm 5s}^2 {\rm 5p}^6$ core-excited states of Cs III ions is given in the present work.

Key words: correlation effects, linewidth, Auger decay

中图分类号:  (Visible and ultraviolet spectra)

  • 32.30.Jc
31.15.vj (Electron correlation calculations for atoms and ions: excited states) 32.70.Jz (Line shapes, widths, and shifts) 32.80.Hd (Auger effect)