Abstract
Doppler profiles are calculated for initial velocity distributions after charge transfer collisions. Such profiles are applied to emissions from excited Fe + following Ar +-Fe collisions, assuming an energy-independent cross section. It is shown that exoergic charge transfer processes may give significantly non-Gaussian line shapes with lines that are flatter and wider than would be expected from a Maxwellian distribution. Endoergic charge transfer processes, however, will give Gaussian line shapes with a linewidth described by a temperature only slightly below the source temperature. For exoergic reactions, our results differ slightly from results obtained using an adaptation of the method developed by Biondi and coworkers for dissociative recombination.
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