中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2033-2039.doi: 10.1088/1674-1056/17/6/017
丁晓彬1, 董晨钟2, Stephan Fritzsche3
Ding Xiao-Bin(丁晓彬)a), Dong Chen-Zhong(董晨钟)a)b)†, and Stephan Fritzschec)
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.
中图分类号: (Visible and ultraviolet spectra)