L-Shell Dielectronic Satellite Transitions of Fe XVII

Beiersdorfer, P.; Bode, M. P.; Ishikawa, Y.; Diaz, F.

doi:10.1088/0004-637x/793/2/99

L-Shell Dielectronic Satellite Transitions of Fe XVII

Journal Article · Thu Sep 11 00:00:00 EDT 2014 · The Astrophysical Journal (Online)

DOI:https://doi.org/10.1088/0004-637x/793/2/99· OSTI ID:1809167

Beiersdorfer, P. ^[1]; Bode, M. P. ^[2]; Ishikawa, Y. ^[3]; Diaz, F. ^[3]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States). Space Sciences Lab.
Univ. of California, Berkeley, CA (United States). Space Sciences Lab.
Univ. of Puerto Rico, San Juan, PR (United States)

In this work, 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.

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: National Aeronautic and Space Administration (NASA); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1809167

Alternate ID(s):: OSTI ID: 22370576

Report Number(s):: LLNL-JRNL--648129; 768422

Journal Information:: The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 793; ISSN 1538-4357

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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