Measured ion-molecule reaction rates for modelling Titan's atmosphere

Details Measured ion-molecule reaction rates for modelling Titan's atmosphere Measured ion-molecule reaction rates for modelling Titan's atmosphere

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984p%26ss...32.1301d&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 32, Oct. 1984, p. 1301-1305.

Physics

11

Atmospheric Chemistry, Hydrocarbons, Ionic Reactions, Molecular Interactions, Reaction Kinetics, Satellite Atmospheres, Titan, Atmospheric Models, Chemical Equilibrium, Methane, Molecular Ions

Scientific paper

Rate coefficients for several two- and three-body ion-molecule reactions involving hydrocarbons have been determined at thermal energies and above using drift tube-mass spectrometer techniques. The measured rates for clustering and breakup reactions involving CH5+ and C2H5+ ions in methane are found to be strongly temperature dependent in the range from 80 to 240K. Rate coefficients for two-body reactions of CH5+, C2H5+, N+, H+ and D+ ions with methane and/or ethane have been measured. The results indicate that the product yields of several of the fast ion-molecule reactions depend strongly on ion energy (temperature), and therefore previous room-temperature results may be of limited value for model calculations of Titan's atmosphere.

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