Statistics – Computation
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...304..849b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 304, May 15, 1986, p. 849-865.
Statistics
Computation
57
Absorption Spectra, Hydrogen, Methane, Molecular Collisions, Molecular Rotation, Planetary Atmospheres, Abundance, Computational Astrophysics, Gas Temperature
Scientific paper
Computations of the rototranslational absorption spectra of H2-CH4 molecular complexes are presented which are based on the classical multipole expansion; spectral profiles are obtained from an exact quantum formalism. The interaction potential is based on laboratory measurements of H2-CH4 pairs at 195 and 297K. The computed spectra provide the most reliable temperature dependence of the absorption coefficient as a function of frequency that can be made under the present circumstances. A theoretical description of the H2CH4 dimer features is given in the isotropic potential approximation. This work is significant for the modeling of the far-infrared absorption of the outer planets' atmospheres, where H2 and CH4 are present.
Borysow Aleksandra
Frommhold Lothar
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