Implications of C2H photochemistry on the modeling of C2 distributions in comets

Details Implications of C2H photochemistry on the modeling of C2 distributions in comets Implications of C2H photochemistry on the modeling of C2 distributions in comets

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9617569j&link_type=abstract

(International Conference on Laboratory Research for Planetary Atmospheres, 2nd, Charlottesville, VA, Oct. 21, 1990, Proceedings

Physics

16

Atmospheric Chemistry, Atmospheric Composition, Carbon, Cometary Atmospheres, Photochemical Reactions, Acetyl Compounds, Molecular Ions, Photodissociation, Vibrational Spectra

Scientific paper

Laboratory studies of the secondary photolysis of the C2H radical are summarized and used to explain some discrepancies between models of C2 emission in comets. These studies show that several states of the C2 radicals produced in the photolysis of C2H2 at 193 nm have bimodal rotational distributions when plotted as a Boltzmann diagram. They also establish that the C2 radicals are formed with varying degrees of vibrational excitation, so that if they are formed in a similar manner in comets, the C2 radicals must start out with this initial vibrational excitation.

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