Noble Gas Isotopes on the Moon

Details Noble Gas Isotopes on the Moon Noble Gas Isotopes on the Moon

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ssrv..106..197w&link_type=abstract

Space Science Reviews, v. 106, Issue 1, p. 197-210 (2003).

Computer Science

8

Scientific paper

We discuss some of the major noble gas components on the Moon and their implications on the history of Moon and Sun. He, Ar, and Rn have been detected in the tenuous lunar atmosphere. The Ar and Rn abundances suggest that a sizeable fraction of the lunar interior presently loses all its freshly produced radiogenic noble gases. Part of the radiogenic Ar and Xe (the latter from now extinct radioactive isotopes of I and Pu) outgassed from the lunar interior later became retrapped in the dust grains on the lunar surface. These “parentless” gases may also be used to constrain the degassing history of the Moon, although a quantitative understanding is lacking. The dust layer on the lunar surface contains large amounts of noble gases implanted by the solar wind. The lunar regolith therefore constitutes the best available archive of the solar history of the past four billion years.

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