Other
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975thph.confr....p&link_type=abstract
American Institute of Aeronautics and Astronautics, Thermophysics Conference, 10th, Denver, Colo., May 27-29, 1975, 11 p.
Other
Absorptivity, Mathematical Models, Monatomic Gases, Nongray Atmospheres, Plasma Slabs, Radiative Transfer, Absorption Spectra, Helium Plasma, Hydrogen Plasma, Isothermal Layers, Planetary Atmospheres, Shock Heating, Spectral Bands
Scientific paper
A multiband model for the absorption coefficient of atomic hydrogen-helium plasmas is constructed which includes continuum and line contributions. Emission from 28 stronger lines of 106 that have been screened is considered, of which 21 are from hydrogen and 7 belong to helium, with reabsorption due to line-line, line-continuum overlap accurately accounted for. The model is utilized in the computation of intensities and fluxes from shock-heated slabs of 85% H2-15% He mixtures for slab thicknesses from 1 to 30 cm, temperature from 10,000 to 20,000 K, and for different densities. In conjunction with the multiband model, simple numerical schemes have been devised which provide a quick and comprehensive way of computing radiative energy transfer in nonisothermal and nongrey gases.
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