Dielectronic recombination and excitation autoionization rate coefficients for potassiumlike [Formula Presented] to fluorinelike [Formula Presented]

K. B. Fournier, M. Cohen, W. H. Goldstein, A. L. Osterheld, M. Finkenthal, M. J. May, J. L. Terry, M. A. Graf, J. Rice

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Fully relativistic, ab initio calculations of the rate of dielectronic recombination (DR) have been performed for fluorinelike [Formula Presented] to magnesiumlike [Formula Presented] and chlorinelike [Formula Presented] and argonlike [Formula Presented]. Calculations of the rate of excitation autoionization (EA) have been performed for neonlike [Formula Presented] to aluminumlike [Formula Presented] and argonlike [Formula Presented] and potassiumlike [Formula Presented]. The detailed calculations of the atomic structure and rate coefficients for charge states in these groups allow interpolation of the DR and EA rates for the more complex ions having 3[Formula Presented]3[Formula Presented] (k=1–4 for DR and k=2–5 for EA) ground states. The calculations for DR are broken up by different classes of excitation channels; simple, analytic formulas are then fit to the calculations. The effects of configuration interaction on the rates of DR and EA have been studied in detail and are found to have a slight effect on only a small class of the Auger rates needed for the present work. Radiative transitions between energy levels in the continuum are investigated and found to have a moderate effect on the DR rates and a small effect on the EA rates of the ions in this paper.

Original languageEnglish
Pages (from-to)3870-3884
Number of pages15
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume54
Issue number5
DOIs
StatePublished - 1996
Externally publishedYes

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