Mass fractionation of the lunar surface by solar wind sputtering

Details Mass fractionation of the lunar surface by solar wind sputtering Mass fractionation of the lunar surface by solar wind sputtering

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.3797s&link_type=abstract

Journal of Geophysical Research, vol. 82, Sept. 10, 1977, p. 3797-3804.

Physics

8

Fractionation, Lunar Surface, Solar Wind, Sputtering, Energy Distribution, Enrichment, Isotopes, Silicon Dioxide

Scientific paper

An investigation is conducted concerning the mass-fractionation effects produced in connection with the bombardment of the moon by the solar wind. Most of the material ejected by sputtering escapes the moon's gravity, but some returning matter settles back onto the lunar surface. This material, which is somewhat richer in heavier atoms than the starting surface, is incorporated into the heavily radiation-damaged outer surfaces of grains. The investigation indicates that sputtering of the lunar surface by the solar wind will give rise to significant surface heavy atom enrichments if the grain surfaces are allowed to come into sputtering equilibrium.

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