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Title: L-shell dielectronic satellite transitions of Fe XVII

We have used the relativistic multi-reference Møller-Plesset perturbation theory to calculate the positions of the dielectronic satellite transitions involving doubly excited 3ℓ3ℓ' configurations that are associated with the X-ray spectrum of Fe XVII. A comparison of these positions with the wavelengths employed in astrophysical modeling codes shows discrepancies of up to 36 mÅ. Inspection of the spectrum of Capella recorded with the high energy transmission grating on the Chandra X-Ray Observatory reveals several features enhanced by Fe XVI lines formed by dielectronic recombination, one of which may be of future diagnostic use as it is fairly well isolated and in large part formed by dielectronic recombination.
Authors:
 [1] ;  [2] ; ;  [3]
  1. Physics Division, Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)
  2. Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States)
  3. Department of Chemistry and the Chemical Physics Program, University of Puerto Rico, San Juan, PR 00931 (United States)
Publication Date:
OSTI Identifier:
22370576
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 793; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; CONFIGURATION; GAMMA RADIATION; IRON; L SHELL; PERTURBATION THEORY; POWER TRANSMISSION; RECOMBINATION; RELATIVISTIC RANGE; SATELLITES; SUN; WAVELENGTHS; X RADIATION; X-RAY SPECTRA