Development of a collector pyrolyser of aerosols (CPA) devoted to the analysis of the Venusian clouds

Astronomy and Astrophysics – Astronomy

Scientific paper

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Aerosols, Halley'S Comet, Pyrolysis, Venera Satellites, Venus Clouds, Equipment Specifications, Mass Spectroscopy, Vacuum Chambers, Venus Atmosphere

Scientific paper

As part of the Franco-Soviet VEGA 85 mission, a Venera-type landing probe will be dropped by a Soviet spacecraft when it flies by Venus on its way to Halley's comet. During the descent through the Venus atmosphere, a CPA will be used to analyze the composition of the aerosols collected when crossing the main layers of the Venus clouds, in the altitude region of 63-47 km. After being collected, the aerosols will be heated up to 400 C inside a small pyrolysis chamber; the gases obtained will then be injected into a mass spectrometer. This paper describes the scientific objectives of the experiment as well as the equipment used.

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