Abstract
The effects of overlapping resonances in dielectronic recombination (or in photoionization) of a highly-charged ion are investigated. The example taken in this report is the coupling between 2s3s and 2p3p resonance states of an helium-like ion. The energy separation of the 2s3s and the 2p3p resonance states is always larger than the autoionizing widths for all ions. However, the energy separation becomes smaller than the radiative decay widths for a highly-charged ion. This report discusses the case that resonances become overlapping owing to the radiative decay effect. An isolated-resonance approximation usually employed in the calculation of dielectronic recombination processes is also examined.
Published Version
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