Other
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243...65b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 1, 1990, p. 65-71.
Other
39
Hydrogen Atoms, Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Abundance, Deuterium, Free Radicals, Interstellar Gas
Scientific paper
Recent observations suggest that grain-surface chemistry is more complicated than merely reactions involving hydrogen and deuterium atoms. However, in order for this to be the case, H atom reactions must be suppressed. Three possible scenarios in which they may occur are discussed. In the event of any of these situations applying to a dense interstellar cloud, surface reactions between accreted heavy atoms and radicals, and between radicals formed in situ, will become important. This may then account for the relatively high abundances of complex molecules in hot core regions, which cannot otherwise be explained in terms of gas phase chemistry. Calculations performed using a version of the gas-grain model developed by Brown and Charnley illustrate the possible importance of this formation route.
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