L B Zhao and S C Li 1998 J. Phys. B: At. Mol. Opt. Phys. 31 1887 doi:10.1088/0953-4075/31/9/007
Electron-impact excitation in the average-atom model
L B Zhao
,
and S C Li
In the average-atom model, the electron occupation probability change, resulting from electron-impact excitation, for an average ion, has been derived from the rate equations for detailed configuration accounting. Based on the results obtained, a self-consistent-field theoretical method has been developed to calculate electron-impact excitation cross sections and rate coefficients for average ions, which have the noninteger occupation number of orbital electrons in general. As an example, 
-
(all 
and 
) excitation cross sections for selenium have been calculated at a defined electron population, and have been compared with the results in the Bethe approximation. We also apply this method to the calculations of 2s-2p excitation cross sections for the `real' 
and 
ions. The results are in good agreement with the experimental measurements and other available theoretical calculations.
- PACS
- Subjects
- Dates
-
Issue 9 (14 May 1998)
Received 2 August 1997, in final form 17 February 1998
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Electron-impact excitation in the average-atom model
L B Zhao and S C Li 1998 J. Phys. B: At. Mol. Opt. Phys. 31 1887
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