Assessment of the fluorescence and auger database used in plasma modeling

T.W. Gorczyca, C.N. Kodituwakku, K.T. Korista, O. Zatsarinny, N.R. Badnell, E. Behar, M.H. Chen, D.W. Savin

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Abstract

We have investigated the accuracy of the vacancy fluorescence database of Kaastra & Mewe resulting from the initial atomic physics calculations and the subsequent scaling along isoelectronic sequences. In particular, we have focused on the relatively simple Be- and F-like vacancy sequences. We find that the earlier atomic physics calculations for the oscillator strengths and autoionization rates of singly charged B ii and Ne ii are in sufficient agreement with our present calculations. However, the substantial charge dependence of these quantities along each isoelectronic sequence, the incorrect configuration averaging used for B ii, and the neglect of spin-orbit effects (which become important at high Z) all cast doubt on the reliability of the Kaastra & Mewe data for application to plasma modeling.
Original languageEnglish
Pages (from-to)636-643
Number of pages7
JournalAstrophysical Journal
Volume592
Issue number1
DOIs
Publication statusPublished - 20 Jul 2003

Keywords

  • atomic data
  • atomic processes
  • X-rays
  • fluorescence
  • auger database
  • plasma modeling
  • plasma

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