Noble gases in the terrestrial planets

Details Noble gases in the terrestrial planets Noble gases in the terrestrial planets

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.293..535m&link_type=abstract

Nature, vol. 293, Oct. 15, 1981, p. 535-539.

Astronomy and Astrophysics

Astronomy

20

Atmospheric Composition, Planetary Atmospheres, Protoplanets, Rare Gases, Solar Wind, Terrestrial Planets, Abundance, Astronomical Models, Degassing, Meteorites, Radioactive Isotopes, Solar System, Planets, Terrestrial Planets, Rare Gases, Abundance, Mars, Earth, Data, Venus, Solar Wind, Planetesimals, Radius, Volatile Elements, Melting, Radioisotopes, Models, Argon, Neon, Krypton, Xenon, Samples, Lunar, Nitrogen, Meteorites, Atmosphere, Origin, Isotopic Ratios, Composition, Distribution, Condensation

Scientific paper

Abundances of primordial noble gases are lower for Mars than for earth, but are higher for Venus. The data for Venus are attributed to implantation of solar wind in small preplanetary particles. Results for Mars are explained by escape of gas from planetesimals with radius between 5 and 100 km which form within the first 10 million years of the solar system. Volatile loss is associated with melting caused by short-lived radioisotopes such as Al-26.

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