Importance of configuration interaction for accurate atomic data: Fluorescence yields of K-shell vacancy, lithium-like ions

T. W. Gorczyca, I. Dumitriu, M.F. Hasoglu, K.T. Korista, N.R. Badnell, D.W. Savin, S.T. Manson

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We demonstrate that the inclusion of configuration interaction (CI) results in significant values for the K-shell fluorescence yields of Li-like ions, which are zero in a single-configuration approach. Modeling codes for simulating supernova remnants under nonequilibrium ionization conditions or photoionized plasmas such as active galactic nuclei or X-ray binaries need to be updated accordingly. A two-parameter fitting formula for the fluorescence yields has been developed. The generality of important CI effects on atomic calculations is pointed out.

LanguageEnglish
PagesL121-L124
Number of pages4
JournalAstrophysical Journal
Volume638
Issue number2
DOIs
Publication statusPublished - 20 Feb 2006

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lithium
configuration interaction
fluorescence
nonequilibrium ionization
shell
ion
supernova remnants
active galactic nuclei
ions
ionization
inclusions
plasma
configurations
modeling
x rays
effect
parameter
calculation
code

Keywords

  • atomic data
  • atomic processes
  • line : formation
  • X-rays
  • dielectronic satellite spectra
  • resonant transfer excitation
  • X-ray emission
  • cross sections
  • recombination
  • photoionization
  • ionization
  • photoabsorption
  • plasma
  • lines

Cite this

Gorczyca, T. W. ; Dumitriu, I. ; Hasoglu, M.F. ; Korista, K.T. ; Badnell, N.R. ; Savin, D.W. ; Manson, S.T. . / Importance of configuration interaction for accurate atomic data : Fluorescence yields of K-shell vacancy, lithium-like ions. In: Astrophysical Journal. 2006 ; Vol. 638, No. 2. pp. L121-L124.
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Importance of configuration interaction for accurate atomic data : Fluorescence yields of K-shell vacancy, lithium-like ions. / Gorczyca, T. W. ; Dumitriu, I.; Hasoglu, M.F. ; Korista, K.T. ; Badnell, N.R.; Savin, D.W. ; Manson, S.T. .

In: Astrophysical Journal, Vol. 638, No. 2, 20.02.2006, p. L121-L124.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Importance of configuration interaction for accurate atomic data

T2 - Astrophysical Journal

AU - Gorczyca, T. W.

AU - Dumitriu, I.

AU - Hasoglu, M.F.

AU - Korista, K.T.

AU - Badnell, N.R.

AU - Savin, D.W.

AU - Manson, S.T.

PY - 2006/2/20

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AB - We demonstrate that the inclusion of configuration interaction (CI) results in significant values for the K-shell fluorescence yields of Li-like ions, which are zero in a single-configuration approach. Modeling codes for simulating supernova remnants under nonequilibrium ionization conditions or photoionized plasmas such as active galactic nuclei or X-ray binaries need to be updated accordingly. A two-parameter fitting formula for the fluorescence yields has been developed. The generality of important CI effects on atomic calculations is pointed out.

KW - atomic data

KW - atomic processes

KW - line : formation

KW - X-rays

KW - dielectronic satellite spectra

KW - resonant transfer excitation

KW - X-ray emission

KW - cross sections

KW - recombination

KW - photoionization

KW - ionization

KW - photoabsorption

KW - plasma

KW - lines

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