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titleEnergy deposition by X-ray photoelectrons into interstellar molecular clouds
Author(eng)Voit, G. M.
Author Affiliation(eng)Colorado Univ.|Joint Inst. for Lab. Astrophysics
Issue Date1991-08-10
Languageeng
DescriptionThe deposition of energy by 100-10,000 eV electrons into molecular hydrogen and helium gas of cosmic abundances and fractional ionization ranging from 10 to the -12th to 0.1 is considered. In order to account for energy deposition by both discrete and continuous degradation processes, the loss spectrum, a form of the Spencer-Fano degradation spectrum particularly suited to describing electron energy deposition in a partially ionized gas is considered. The calculated excitation and ionization yields drop as the fractional ionization increases. The dependences of these yields on fractional ionization are fitted to a form suitable for swift numerical computation.
NASA Subject CategoryASTROPHYSICS
Report No91A47299
RightsCopyright
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/346502


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