L-shell dielectronic satellite transitions of Fe XVII
- Physics Division, Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)
- Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States)
- Department of Chemistry and the Chemical Physics Program, University of Puerto Rico, San Juan, PR 00931 (United States)
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.
- OSTI ID:
- 22370576
- Journal Information:
- Astrophysical Journal, Vol. 793, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
Signatures of the non-Maxwellian κ -distributions in optically thin line spectra: II. Synthetic Fe XVII–XVIII X-ray coronal spectra and predictions for the Marshall Grazing-Incidence X-ray Spectrometer (MaGIXS)
|
journal | June 2019 |
Highly charged ions in magnetic fusion plasmas: research opportunities and diagnostic necessities
|
journal | May 2015 |
Temperature Measurements Using the Dielectronic Satellite Lines of Fe xvii
|
journal | August 2018 |
Similar Records
THEORETICAL WAVELENGTHS OF Fe XVI L-SHELL TRANSITIONS AND COMPARISON WITH LABORATORY MEASUREMENTS AND CHANDRA OBSERVATIONS OF CAPELLA
Temperature Measurements Using the Dielectronic Satellite Lines of Fe xvii