The rate of dissociation of molecular hydrogen by hydrogen atoms at very low densities

Details The rate of dissociation of molecular hydrogen by hydrogen atoms at very low densities The rate of dissociation of molecular hydrogen by hydrogen atoms at very low densities

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...311l..93d&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 311, Dec. 15, 1986, p. L93-L96. Research supported

Statistics

Computation

37

Gas Density, Gas Dissociation, Hydrogen Atoms, Interstellar Chemistry, Molecular Interactions, Shock Heating, Atomic Recombination, Computational Astrophysics, Computational Chemistry, Shock Wave Interaction, Star Formation

Scientific paper

The collision-induced dissociation of H2 in the (υ = 0, J = 0) internal state by H atoms was studied by three-dimensional quasi-classical trajectories on the Liu-Siegbahn-Truhlar-Horowitz ab initio potential energy surface. The dynamic threshold for dissociation was found to be essentially coincident with the energetic threshold. The dissociation cross sections were fitted to an excitation function and used to predict the rate constant for dissociation of H2 by H atoms by shock waves at very low interstellar densities.

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