Computer Science
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994metic..29..718b&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 29, no. 5, p. 718-723
Computer Science
12
Chemical Composition, Lunar Rocks, Lunar Soil, Moon, Nitrogen Isotopes, Solar Wind, Chemical Analysis, Cosmic Rays, Graphs (Charts), Heating, Melting, Samples, Sun, Tables (Data)
Scientific paper
High resolution stepped combustion is used to release isotopically distinct N components of different thermal stability in lunar soil 12023. The isotopically light gas in this soil appears to be the same as that found in the lunar breccia 79035, but the latter material has little of an isotopically heavy component of only slightly lower thermal stability. Complex grains in 12023, which probably only release their N on melting, contain a mixture of the heavy and light N in approximately the same proportions as the unaggregated soil. Ideas that require complex grains to be enriched in a light-N component, synonymous with the ancient solar wind, therefore, cannot be correct. The implications for models invoking solar-wind secular variation are discussed.
Brilliant D. R.
Franchi Ian A.
Pillinger Colin T.
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