Dielectronic satellite spectra for highly charged helium-like ions. III - Calculations of N equals 3 solar flare iron lines

Details Dielectronic satellite spectra for highly charged helium-like ions. III - Calculations of N equals 3 solar flare iron lines Dielectronic satellite spectra for highly charged helium-like ions. III - Calculations of N equals 3 solar flare iron lines

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..405b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Feb. 1979, p. 405-419. Research supported by the Science Research

Astronomy and Astrophysics

Astronomy

86

Iron, Line Spectra, Solar Flares, Solar Spectra, Intercosmos Satellites, Rarefied Plasmas, Satellite Observation, Tables (Data), Transition Probabilities

Scientific paper

New calculations have been carried out in a multiconfiguration intermediate coupling scheme for dielectronic satellite spectra in Fe XXIV of the type 1s2nl-1s 2p nl, for n = 2 and 3. These are for application to solar flare spectra. The n = 2 result is consistent with previous calculations. Satellites with n = 3 enable (a) features in the observed spectra to be identified and explained, (b) a correction to be made to the intensity of the Fe XXV resonance line, and (c) provide part of the data for an estimate of the contribution of satellites with n ≥ 3 to the overall dielectronic recombination process. The computed spectra are compared with the solar flare spectra of Grineva et al. (1973). The results are discussed in terms of plasma diagnostic techniques, and the further theoretical work required to complete our understanding of these spectra. This is important for the interpretation of future planned observations of solar flare iron lines in the soft X-ray region.

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