Physics – Atomic Physics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...422..416c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 422, no. 1, p. 416-422
Physics
Atomic Physics
51
Alkenes, Alkynes, Astronomical Models, Carbon, Chemical Reactions, Interstellar Matter, Rates (Per Time), Reaction Kinetics, Absorption Spectroscopy, Atomic Physics, Far Ultraviolet Radiation, Optical Resonance, Photolysis, Time Dependence
Scientific paper
Experimentally measured rate constants for the chemical reactions of ground state carbon atoms with several alkenes and alkynes are found to have surprisingly large values (approximately 10-10 - 10-9/cu cm molecule/s). The rate constants increase significantly with the size of the molecule. The experimental results agree well with a simple classical capture theory which predicts a dependence of the rate constant on N1/3, where N is the number of carbon atoms in the molecule. The results suggest that the reactions of ground state carbon atoms with organic molecules should be included in the chemical reaction networks used to model interstellar clouds.
Clary David C.
Haider Naghma
Husain D.
Kabir Mukul
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