Reevaluation of the rate constants for the reactions C(+) + H2 yields CH(+) + H and CH(+) + H yields C(+) + H2 at temperatures characteristic of ambient and shocked diffuse interstellar clouds

Details Reevaluation of the rate constants for the reactions C(+) + H2 yields CH(+) + H and CH(+) + H yields C(+) + H2 at temperatures characteristic of ambient and shocked diffuse interstellar clouds Reevaluation of the rate constants for the reactions C(+) + H2 yields CH(+) + H and CH(+) + H yields C(+) + H2 at temperatures characteristic of ambient and shocked diffuse interstellar clouds

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...287..676c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 287, Dec. 15, 1984, p. 676-680. Research supported by the American Chemical

Astronomy and Astrophysics

Astrophysics

12

Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Reaction Kinetics, Shock Waves, Carbon, Hydrogen, Temperature Dependence

Scientific paper

The rate constants for the reactions C(+) + H2 yields CH(+) + H, and CH(+) + H yields C(+) were calculated for the temperature characteristics of ambient and shocked regions in interstellar clouds, and the results were compared with current observational data. It is shown that the current observational data are consistent with a rate reaction rate constant for the CH(+) + H yields C(+) + H2 which approaches the Langevin limit at low temperature. The calculated rate constant for the reaction C(+) + H2 yields CH(+) + H2 was about one order of magnitude larger than the current values. On the basis of the theoretical calculations, the results of Herbst and Knudson (1981) from phase-space theory are recommended for explicit models of nonequilibrium effects in shocked waves.

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