Assessment of the Fluorescence and Auger Data Base used in Plasma Modeling

Details Assessment of the Fluorescence and Auger Data Base used in Plasma Modeling Assessment of the Fluorescence and Auger Data Base used in Plasma Modeling

2003-04-10

arxiv.org/abs/astro-ph/0304200v1

Astrophys.J. 592 (2003) 636

Astronomy and Astrophysics

Astrophysics

19 pages with 6 figures, AAS TeX, accepted for publication in ApJ

Scientific paper

10.1086/375561

We have investigated the accuracy of the 1s-vacancy fluorescence data base of Kaastra & Mewe (1993, A&AS, 97, 443) resulting from the initial atomic physics calculations and the subsequent scaling along isoelectronic sequences. In particular, we have focused on the relatively simple Be-like and F-like 1s-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.

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