Photochemistry of fluorine in the mesosphere of Venus

Details Photochemistry of fluorine in the mesosphere of Venus Photochemistry of fluorine in the mesosphere of Venus

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...59...69p&link_type=abstract

Icarus (ISSN 0019-1035), vol. 59, July 1984, p. 69-73.

Computer Science

3

Atmospheric Chemistry, Atmospheric Composition, Fluorine, Photochemical Reactions, Venus Atmosphere, Atmospheric Models, Mesosphere, Reaction Kinetics, Turbulent Diffusion, Venus, Mesosphere, Fluorine, Photochemistry, Concentration, Diffusion, Scale Height, Troposphere, Hydrofluoric Acid, Flux, Clouds, Chemistry

Scientific paper

In the laboratory, reactions with fluorine species proceed rapidly with high rates but under mesospheric conditions the efficiency of these compounds is low due to the rapid formation of HF and to the lack of reactivity of this species. Even if diffusion processes are included, the results of calculations lead to fluorine concentrations typically less than 20 cm-3. The low photodissociation coefficient of HF leads to the expectation of a scale height of HF greater than or equal to the mean scale height. If the troposphere appears to be a sink for hydrofluoric acid, the maximum value of fluorine is obtained with a downward flux of 1.3×108HF atoms cm-2s-1 at the level of the clouds.

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