Collision Induced Dissociation and Energy Transfer in Molecular Hydroge

Details Collision Induced Dissociation and Energy Transfer in Molecular Hydroge Collision Induced Dissociation and Energy Transfer in Molecular Hydroge

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.4907m&link_type=abstract

American Astronomical Society Meeting 208, #49.07; Bulletin of the American Astronomical Society, Vol. 38, p.125

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Molecular hydrogen is a significant constituent in giant molecular clouds in the interstellar medium. Shocks in these clouds are associated with star formation. The cooling of the shocks is governed by competition of collisional energy transfer and dissociation with radiative cooling by quadrupole emission. Thus a detailed understanding of collisional behaviour of molecular hydrogen is needed. Work in this group has examined energy transfer and dissociation in molecular energy transfer as the result of collisions with H, D, He, and H2. Using quasiclassical trajectories and chemically accurate ab initio potentials state-to-state rate coefficients have been determined. The uncertainties of the cross sections are propagated rigourously to give uncertainties of the rate coefficients and the rate coefficients are parameterized as a function of temperature. Comparisons with quantum calculations are discussed and the proposed website is described.This work was supported by a grant from the Natural Sciences and Engineering Research Council of Canada. The calculations were carried out using the high performance computing facility jointly supported by the Canadian Foundation for Innovation, the British Columbia Knowledge Development Fund, and Silicon Graphics at the University of Northern British Columbia.

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