Other
Scientific paper
Jan 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985p%26ss...33..109k&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 33, Jan. 1985, p. 109-117.
Other
11
Atmospheric Chemistry, Chemical Composition, Venera Satellites, Venus Clouds, Ammonium Compounds, Fluorescence, Iron Chlorides, Nitrogen Oxides, Sulfites, Sulfur, Sulfuric Acid, Ultraviolet Spectra, Venus, Clouds, Chemistry, Composition, Venera 14, Spectroscopy, Layers, X-Ray Fluorescence, Photochemistry, Sulfuric Acid, Eddy Effects, Mixing, Ferric Chloride, Ultraviolet, Wavelengths, Absorption, Spectra, Flux, Venera 12, Condensates, Density Profiles, Concentration, Calculations
Scientific paper
From estimates of drying effect in the cloud layer, data of the Venera 14 X-ray fluorescent spectroscopy, and evaluation of photochemical production of sulfuric acid, it follows that sulfuric acid and/or products of its further conversion should constitute not only the Mode 2 particles but most of the Mode 3 particles as well. The eddy mixing coefficient equal 20,000 sq cm per sec in the cloud layer. The presence of ferric chloride in the cloud layer is indicated by the Venus u.v. absorption spectrum in the range of 3200-5000 A, by the Venera 12 X-ray fluorescent spectrum, by the coincidence of the calculated FeCl3 condensate density profile and that of the Mode 1 in the middle and lower cloud layer, as well as by the upward flux of FeCl3 from the middle cloud layer which provides the necessary concentration of FeCl3 in H2SO4 solution. FeCl3 as the second absorber explains the localization of absorption in the upper cloud layer due to the FeCl3 conversion to ferric sulfate near the boundary between the upper and middle cloud layers. Other possible absorbers such as sulfur, ammonium pyrosulfite, nitrosylsulfuric acid, etc. are discussed.
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