Implications of A-36 excess on Venus

Details Implications of A-36 excess on Venus Implications of A-36 excess on Venus

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979m%26p....20..317s&link_type=abstract

Moon and the Planets, vol. 20, May 1979, p. 317-319.

Physics

2

Abundance, Argon Isotopes, Mass Spectroscopy, Planetary Evolution, Primitive Earth Atmosphere, Venus Atmosphere, Carbon Dioxide, Deposition, Earth Atmosphere, Interplanetary Gas, Mass Ratios, Pioneer Venus Spacecraft, Water Vapor

Scientific paper

A mass spectrometer on board Pioneer Venus found that the amount of A-36 on Venus is about 100 times that on the earth. This implies more rapid accretion of Venus than the earth, and also gives evidence for the difficulty of heavy gases to escape from the atmosphere of Venus and earth. The rare gas pattern in the earth's atmosphere suggests that the earth accreted in a vacuum. The A-36 excess on Venus suggests that Venus accreted in the presence of the tenuous solar nebula, while the earth accreted after the T Tauri wind from the sun blew off the solar nebula.

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