Measurements of the composition of aerosol component of Venusian atmosphere with VEGA 1 lander, preliminary data

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Aerosols, Chemical Composition, Sulfuric Acid, Venus Atmosphere, Venus Clouds, Chemical Analysis, Chlorine, Line Spectra, Mass Spectrometers, Size Distribution

Scientific paper

Preliminary investigation of mass spectra of gaseous products of pyrolyzed Venusian cloud particles collected and analyzed by the complex device of mass-spectrometer and collector pyrolyzer on board Vega 1 lander revealed the presence of heavy particles in the upper cloud layer. Based on 64 amu peak (SO2+), an estimate of the lower limit of the sulfuric acid aerosol content at the 62 to 54 km heights of approximately 2.0 mg/cu m is obtained. A chlorine line (35 and 37 amu) is also present in the mass spectrum with a lower limit of the chlorine concentration of approximately 0.3 mg/ cu m.

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