Discovery of vapor deposits in the lunar regolith

Details Discovery of vapor deposits in the lunar regolith Discovery of vapor deposits in the lunar regolith

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993sci...261.1305k&link_type=abstract

Science (ISSN 0036-8075), vol. 261, no. 5126, p. 1305-1307.

Computer Science

81

Lunar Soil, Mineral Deposits, Regolith, Vapor Phases, Lunar Surface, Solar Wind

Scientific paper

Lunar soils contain micrometer-sized mineral grains surrounded by thin amorphous rims. Similar features have been produced by exposure of pristine grains to a simulated solar wind, leading to the widespread belief that the amorphous rims result from radiation damage. Electron microscopy studies show, however, that the amorphous rims are compositionally distinct from their hosts and consist largely of vapor-deposited material generated by micrometeorite impacts into the lunar regolith. Vapor deposits slow the lunar erosion rate by solar wind sputtering, influence the optical properties of the lunar regolith, and may account for the presence of sodium and potassium in the lunar atmosphere.

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