Plasma discharge in N2 + CH4 at low pressures - Experimental results and applications to Titan

Details Plasma discharge in N2 + CH4 at low pressures - Experimental results and applications to Titan Plasma discharge in N2 + CH4 at low pressures - Experimental results and applications to Titan

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...90...57t&link_type=abstract

Icarus (ISSN 0019-1035), vol. 90, March 1991, p. 57-73.

Computer Science

92

Atmospheric Composition, Hydrocarbons, Planetary Magnetospheres, Plasma Jets, Satellite Atmospheres, Titan, Gas Chromatography, Mass Spectrometers, Saturn, Satellites, Titan, Plasma, Nitrogen, Methane, Pressure, Experiments, Discharge, Nitriles, Atmosphere, Abundance, Chemistry, Cosmic Rays, Troposphere, Magnetosphere, Electrons, Charged Particles, Molecules, Laboratory Studies, Energy, Mixing, Models, Procedure, Stratosphere, Comparisons, Equipment, Diagrams, Irradiation, Techniques, Hydrogen Cyanide, Acet

Scientific paper

Results are reported from laboratory continuous-flow plasma-discharge experiments designed to simulate the formation of hydrocarbons and nitriles from N2 and CH4 in the atmosphere of Titan. Gas-chromatography and mass-spectrometry data were obtained in experiments lasting up to 100 h at temperature 295 K and pressure 17 or 0.24 mbar, modeling (1) cosmic-ray-induced processes in the Titan troposphere and (2) processes related to stratospheric aurorae excited by energetic electrons and ions from the Saturn magnetosphere, respectively. The results are presented in extensive tables and graphs, and the 0.24-mbar yields are incorporated into an eddy-mixing model to give stratospheric column abundances and mole fractions in good agreement with Voyager IRIS observations.

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