Abstract
In this paper, kappa distribution of electronic energy is discussed for non-Maxwellian distribution. Taking silicon III 189.2 nm line in solar atmospheric plasma as an example, we discuss the kappa distribution and the Maxwellian distribution when temperature varies from [Formula: see text] K to [Formula: see text] K, and we calculate the averaged collision strengths of the kappa distribution and the Maxwellian distribution. Results indicate that the kappa distribution is close to the Maxwellian distribution with the increase of parameter [Formula: see text], and the difference of the averaged collision strength between the kappa distribution and the Maxwellian distribution is not very large in the higher temperature region from [Formula: see text] K to [Formula: see text] K, while that is large in the lower temperature region from [Formula: see text] K to [Formula: see text] K. This discussion will be significant in study of plasma quantitatively.
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