Electron collisional excitation and resonant photoexcitation of solar S XI

Details Electron collisional excitation and resonant photoexcitation of solar S XI Electron collisional excitation and resonant photoexcitation of solar S XI

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...309..883k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 309, Oct. 15, 1986, p. 883-891.

Astronomy and Astrophysics

Astrophysics

4

Atomic Excitations, Electron Scattering, Photoabsorption, Resonance Scattering, Solar Spectra, Sulfur, Emission Spectra, Extreme Ultraviolet Radiation, Forbidden Bands, Line Spectra, Ultraviolet Spectra, X Ray Spectra

Scientific paper

The line emission of carbon-like S XI is predicted using a comprehensive 46-level model including the configurations 2p2, 2s2p3, 2p3s, 2p4, 2p3p, 2p3d. Relative intensities of allowed, intercombination, and forbidden lines are computed for quiet and active solar conditions. The intercombination line 2s2p3(5S2)-2p2(3P2) and the forbidden line 2p2(1S0-3P1) are identified, based on the authors' predictions, with lines in the solar flare list of Doyle. The process of photoexcitation by the Fe XIII λ191.26 line is included to study its effect on EUV lines and the infrared forbidden lines at 1.92 and 1.39 μm.

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