Relativistic Auger and x-ray deexcitation rates of highly stripped atoms

Physics

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Scientific paper

Radiative and radiationless transition probabilities have been computed relativistically for Li-, N-, F-, K-, and Co-like ions with atomic numbers up to Z=92 and with initial configurations consisting of a few closed inner shells with one deep-lying vacancy. Relativity is found to have a pronounced effect on the Auger rates of these highly ionized systems. Radiationless-transition rates are seen to increase with degree of ionization; the stripping of outer shells has a much smaller effect than creation of an empty inner shell of spectator holes. Fluorescence yields are found to increase with the degree of ionization. In the radiative decay of 1s2s2 Li-like ions, initial-state correlation and configuration interaction boost the fluorescence yield by six orders of magnitude at low and medium Z.

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