view Abstract Citations (144) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Soft X-ray opacity in hot and photoionized gases. Krolik, J. H. ; Kallman, T. R. Abstract New calculations are presented of the soft X-ray opacity of gas having cosmic elemental abundances, but in a variety of ionization states. Coronal ionization equilibrium is considered over the range of temperatures 10 to the 4th to 3 x 10 to the 8th K and photoionization equilibrium with power-law and thermal bremsstrahlung spectra over a wide range of ionization parameters. The results are displayed in illustrative figures. For temperatures and ionization parameters commonly found in astrophysical plasmas, the opacity (particularly to photons of equal to or less than 1 keV) can be diminished by substantial factors relative to the state in which all atoms are neutral. As the dominant ionization stages change, the positions and contrasts of prominent K-edges also change. Publication: The Astrophysical Journal Pub Date: November 1984 DOI: 10.1086/162608 Bibcode: 1984ApJ...286..366K Keywords: High Temperature Gases; Hydrogen Atoms; Opacity; Photoionization; Plasma Spectra; X Ray Spectra; Atomic Spectra; Bremsstrahlung; Gas Spectroscopy; Hydrogen Plasma; Ionized Gases; Astrophysics full text sources ADS |
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Krolik et al. (1984) studied this question.