Rotational integral cross sections and rate coefficients of HD scattered by He and H2

Details Rotational integral cross sections and rate coefficients of HD scattered by He and H2 Rotational integral cross sections and rate coefficients of HD scattered by He and H2

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...85.1101s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 85, no. 3, Nov. 1990, p. 1101-1125.

Astronomy and Astrophysics

Astrophysics

21

Deuterium, Helium, Hydrogen, Scattering Cross Sections, Angular Momentum, Electron Transitions, Molecular Energy Levels, Molecular Interactions, Molecular Rotation

Scientific paper

The previously described interaction potentials of HD-He and HD-H2 have been used in close coupled scattering calculations for providing integral cross sections and subsequently rate coefficients at temperatures up to 600 K (HD-He) and 300 K (HD-H2). Errors of about 10 percent for the leading low angular momentum transitions of HD have been estimated mainly from previous tests of the original H2-He and H2-H2 interaction potentials. Angular momentum transfer cross sections of the HD-H2 system have been found much smaller than the leading ones, and their possible errors could be relatively large due to neglected details of anisotropic short range interactions. Some interesting similarities and differences of Delta(jHD) = 1 cross sections of both systems have been discussed.

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