R-matrix inner-shell electron-impact excitation of Fe15+ including auger-plus-radiation damping

G.Y. Liang, A.D. Whiteford, N.R. Badnell

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We present results for the inner-shell electron-impact excitation of Fe15+ using the intermediate-coupling frame transformation R-matrix approach in which Auger-plus-radiation damping has been included. The target and close-coupling expansions are both taken to be the 134 levels belonging to the configurations 2s22p63l, 2s22p53s3l, 2s22p53p2 and 2s22p53p3d. The comparison of Maxwell-averaged effective collision strengths with and without damping shows that the damping reduction is about 30-40% for many transitions at low temperatures, but up to 80% for a few transitions. As a consequence, the results of previous Dirac R-matrix calculations (Aggarwal and Keenan 2008 J. Phys. B: At. Mol. Opt. Phys. 41 015701) overestimate the effective collision strengths due to their omission of Auger-plus-radiation damping.
Original languageEnglish
Pages (from-to)1-12
Number of pages11
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume41
Issue number23
DOIs
Publication statusPublished - Dec 2008

Keywords

  • R-matrix
  • electron impact
  • Fe15+
  • auger-plus-radiation
  • damping

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