Effects of initial-state population variations on the 2p-to-1s K-alpha dielectronic satellite spectra of highly ionized iron ions in high-temperature astrophysical and laboratory plasmas

Details Effects of initial-state population variations on the 2p-to-1s K-alpha dielectronic satellite spectra of highly ionized iron ions in high-temperature astrophysical and laboratory plasmas Effects of initial-state population variations on the 2p-to-1s K-alpha dielectronic satellite spectra of highly ionized iron ions in high-temperature astrophysical and laboratory plasmas

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrva..39.2411j&link_type=abstract

Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 39, March 1, 1989, p. 2411-2427. Research supported by DO

Physics

General Physics

24

Cosmic Plasma, Electron States, Electron-Ion Recombination, Electronic Spectra, High Temperature Plasmas, Iron, Emission Spectra, Resonance Lines, Solar Flares, Supernova Remnants, X Ray Spectra

Scientific paper

Theoretical predictions for the iron K-alpha X-ray emission spectra of high-temperature plasmas have been obtained under the assumption of steady-state optically thin excitation conditions. The study takes into account the fine-structure components of the 2p-to-1s inner-shell-electron radiative transitions in the iron ions from Fe XVIII to Fe XXIV. In addition to an electron-temperature variation, the present spectra are found to exhibit an electron-density sensitivity which is the result of the density-dependent distribution of populations among the different fine-structure levels of the initial ions in the dielectronic recombination, and of inner-shell electron collisional excitation processes.

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