Collision-strength dependence of solar emission lines of Si(X) and S(XII) |
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Authors: | Suresh Chandra |
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Institution: | Institut für Theoretische Physik der Universität Frankfurt/Main, Robert-Mayer-Str. 10, D 6000 Frankfurt/Main, F.R.G. |
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Abstract: | We have calculated the normalized populations of 15 levels in Si(X) and S(XII) ions in an optically thin medium, under steady-state condition, by using (i) constant collision strengths computed at the incident electron energy kTe and (ii) incident electron-energy-dependent collision strengths. To calculate intensity ratios for solar emission lines, one may use constant collision strengths at the electron energy E'. |
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