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

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isoelectronic sequence
fluorescence
atomic physics
plasma
physics
modeling
autoionization
oscillator strengths
casts
orbits
scaling
configurations
calculation
effect
rate

Keywords

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

Cite this

Gorczyca, T. W., Kodituwakku, C. N., Korista, K. T., Zatsarinny, O., Badnell, N. R., Behar, E., ... Savin, D. W. (2003). Assessment of the fluorescence and auger database used in plasma modeling. Astrophysical Journal, 592(1), 636-643. https://doi.org/10.1086/375561
Gorczyca, T.W. ; Kodituwakku, C.N. ; Korista, K.T. ; Zatsarinny, O. ; Badnell, N.R. ; Behar, E. ; Chen, M.H. ; Savin, D.W. / Assessment of the fluorescence and auger database used in plasma modeling. In: Astrophysical Journal. 2003 ; Vol. 592, No. 1. pp. 636-643.
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Gorczyca, TW, Kodituwakku, CN, Korista, KT, Zatsarinny, O, Badnell, NR, Behar, E, Chen, MH & Savin, DW 2003, 'Assessment of the fluorescence and auger database used in plasma modeling', Astrophysical Journal, vol. 592, no. 1, pp. 636-643. https://doi.org/10.1086/375561

Assessment of the fluorescence and auger database used in plasma modeling. / Gorczyca, T.W.; Kodituwakku, C.N.; Korista, K.T.; Zatsarinny, O.; Badnell, N.R.; Behar, E.; Chen, M.H.; Savin, D.W.

In: Astrophysical Journal, Vol. 592, No. 1, 20.07.2003, p. 636-643.

Research output: Contribution to journalArticle

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T1 - Assessment of the fluorescence and auger database used in plasma modeling

AU - Gorczyca, T.W.

AU - Kodituwakku, C.N.

AU - Korista, K.T.

AU - Zatsarinny, O.

AU - Badnell, N.R.

AU - Behar, E.

AU - Chen, M.H.

AU - Savin, D.W.

PY - 2003/7/20

Y1 - 2003/7/20

N2 - 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.

AB - 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.

KW - atomic data

KW - atomic processes

KW - X-rays

KW - fluorescence

KW - auger database

KW - plasma modeling

KW - plasma

UR - http://arxiv.org/PS_cache/astro-ph/pdf/0304/0304200v1.pdf

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Gorczyca TW, Kodituwakku CN, Korista KT, Zatsarinny O, Badnell NR, Behar E et al. Assessment of the fluorescence and auger database used in plasma modeling. Astrophysical Journal. 2003 Jul 20;592(1):636-643. https://doi.org/10.1086/375561