Abstract
The theory of electron capture by ionic targets is discussed and a calculational procedure for the evaluation of capture rates and cross sections is outlined. Scaling properties of the radiative and Auger transiton probabilities are examined in detail. Sample calculations of dielectronic recombination (DR) rates and cross sections are given. Refinements of the basic calculation which are described include configuration interaction, intermediate coupling, orders of coupling, overlapping resonances, cascade effects, and the fine-structure effect. The effect of extrinsic electric fields on the DR cross section is considered. Field-induced 1-mixing, field mapping of the captured states, field ionization, and possible field-induced shifts of the captured high Rydberg states by time-dependent electric fields are all considered. Finally. atomic processes which are related to DR are briefly summarized.
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