Physics
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..557l&link_type=abstract
Geophysical Research Letters, vol. 6, July 1979, p. 557-559.
Physics
7
Atmospheric Electricity, Carbon Monoxide, Nitrous Oxides, Troposphere, Venus Atmosphere, Electric Discharges, Environment Simulation, Gas Chromatography, Lightning, Shock Heating
Scientific paper
Enhanced levels of N2O and CO were measured in tropospheric air samples exposed to a 17,500-J laboratory discharge. These enhanced levels correspond to an N2O production rate of about 4 trillion molecules/J and a CO production rate of about 10 to the 14th molecules/J. The CO measurements suggest that the primary region of chemical production in the discharge is the shocked air surrounding the lightning channel, as opposed to the slower-cooling inner core. Additional experiments in a simulated Venus atmosphere (CO2 - 95%, N2 - 5%, at one atmosphere) indicate an enhancement of CO from less than 0.1 ppm prior to the laboratory discharge to more than 2000 ppm after the discharge. Comparison with theoretical calculations appears to confirm the ability of a shock-wave/thermochemical model to predict the rate of production of trace species by an electrical discharge.
Chameides W. L.
Howell W. E.
Hughes Robert E.
Levine Joel S.
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