Abstract
The results of a kinetic theory of spectral-line broadening are applied to the calculation of Stark broadening for the Lyman-$\ensuremath{\alpha}$ line in the classical-path approximation. In the small-plasma-parameter limit, the width and shift operator reduces to an average binary electron-atom collision operator with screened interactions and dynamic correlations. The effects of screening, particularly the variation with frequency, are indicated for a simplified model and compared with the corresponding model without screening but with an impact-parameter cutoff in the collision integral. Comparison with the dynamically screened second-order (Born approximation) collision integral is also given.
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