Computer Science
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53.1135b&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 53, May 1989, p. 1135-1166.
Computer Science
16
Ilmenite, Lunar Rocks, Rare Gases, Solar Wind, Abundance, Chemical Composition, Isotopes, Nitrogen, Regolith, Moon, Solar Wind, Element Ratios, Isotopic Ratios, Ilmenites, Chemistry, Samples, Lunar, 79035, Rare Gases, Nitrogen, Laboratory Studies, 71501, Apollo 17 Mission, Comparisons, Experiments, Procedure, Abundance, Zenon, Fractionation, Origin, Source
Scientific paper
The solar wind components in two lunar ilmenites are examined. The noble gas and nitrogen elemental and isotopic abundances of lunar regolith breccia sample 79035, assumed to have been exposed to solar winds more than 2 Ga ago, are analyzed using stepwise oxidation and pyrolysis. This sample is compared with the data of Frick et al. (1988) for soil sample 71501, recently exposed to solar winds. It is observed that the two elements differ in terms of xenon abundance, helium and neon isotopic rates, and He/Ar elemental ratios. It is concluded that there have been isotopic and elemental abundance changes in solar wind composition over time.
Becker Robert H.
Pepin Robert O.
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