Cross Sections for the K-Shell Photoabsorption of Neutral Iron

Details Cross Sections for the K-Shell Photoabsorption of Neutral Iron Cross Sections for the K-Shell Photoabsorption of Neutral Iron

Mar 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...531.1168d&link_type=abstract

The Astrophysical Journal, Volume 531, Issue 2, pp. 1168-1172.

Astronomy and Astrophysics

Astronomy

8

Atomic Data, Atomic Processes

Scientific paper

The Fe I Kα emission lines are observed during solar flares and in the emission spectra of other astrophysical sources, such as active galactic nuclei. This paper presents cross sections for the K-shell photoionization of neutral iron, which are urgently required for the modeling of these astrophysical phenomena. A 16 target-state representation is utilized, where each target state is represented by an extensive configuration-interaction-type wave function. The consequent introduction of electron correlation effects is seen to significantly alter the magnitude of the background cross section in comparison with earlier work, while extensive resonance structure is also resolved near threshold for the first time.

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