Accumulation and circulation of gaseous radon between lunar fines

Details Accumulation and circulation of gaseous radon between lunar fines Accumulation and circulation of gaseous radon between lunar fines

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977rspta.285..331l&link_type=abstract

(Royal Society, Discussion on the Moon - A New Appraisal from Space Missions and Laboratory Analyses, London, England, June 9-12

Physics

2

Fines, Lunar Dust, Lunar Surface, Radon Isotopes, Adsorption, Lead Isotopes, Phase Transformations, Polonium 210, Spectroscopic Analysis

Scientific paper

The circulation of gaseous radon-222 in the lunar regolith is investigated. Evidence for gaseous radon circulation is presented, and the concentration of gaseous radon between grains in the upper regolith layer is estimated to be 3500 atoms per gram of fines. Contradictory experimental and theoretical results are assessed concerning random motion of radon atoms in the regolith, the desorption time for adsorbed radon, and the source depth for radon that reaches the upper regolith.

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