Computer Science
Scientific paper
Jan 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977rspta.284..145p&link_type=abstract
Royal Society (London), Philosophical Transactions, Series A, vol. 284, no. 1319, Jan. 4, 1977, p. 145-150. Research supported
Computer Science
1
Carbon Compounds, Chemical Composition, Deuterium Compounds, Lunar Soil, Methane, Abundance, Chemical Fractionation, Gas Analysis, Lunar Composition, Lunik 16 Lunar Probe, Lunik 20 Lunar Probe, Pyrolysis, Size Separation
Scientific paper
The analysis of CH4 and CD4 gases released by DCl from fractions of Luna 16 and 20 samples selected by size, visual appearance, density and magnetic susceptibility, has shown these soils to be typical of mare and highland material respectively. Both samples are shown to be highly mature in that they contain large quantities of hydrolysable carbon and trapped hydrocarbon. Luna 16 is characterized by a high content of glassy reworked material. The CD4/CH4 ratios indicate that the formation of CH4, unlike hydrolysable carbon, is apparently independent of bulk chemistry in fractions less than 48 microns. However, the proportion of volatile carbon species lost during the formation of larger aggregated grains may depend on the different melting and sintering temperatures of soils of different chemical compositions.
Eglinton Geoffrey
Gowar A. P.
Pillinger Colin T.
Timothy Jull A. J.
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