Other
Scientific paper
Nov 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..341h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Nov. 15, 1991, p. 341-349. Research supported by N
Other
23
Interstellar Chemistry, Interstellar Gas, Molecular Clouds, Chemical Reactions, Exothermic Reactions, Molecular Ions
Scientific paper
Radiative association processes are currently thought to play a significant if not dominant role in the gas phase chemistry of dense interstellar clouds. Current detailed gas phase models of the chemistry of dense clouds contain large numbers of molecules comprising up to about 10 atoms. Radiative association will play a more important role when such models are extended to larger molecules because this process tends to increase in rate as the reactant size increases. In this paper, a current detailed theory of radiative association rate coefficients (the so-called 'phase space' theory) is utilized to determine such rate coefficients for generic reactive systems ranging in size from fewer than 10 atoms to upwards of 100 atoms. In the calculations, 'standard' molecular properties are utilized so that a global view can be obtained. The relationship between radiative association and sticking involving PAHS or 'large molecules' is considered.
Dunbar Robert C.
Herbst Eric
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