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- W2063012421 abstract "Abstract The angular light scattering properties of an Apollo 11 lunar regolith ‘fines’ sample have been determined experimentally for both flat and undulating sample surface preparations. The light scattering curves, whose shapes are known to be a function of the porosity and slope distribution of the measured surface, have been compared with corresponding Earth-based lunar measurements. The comparison method involves the numerical fitting of theoretical photometric functions to both the astronomical and laboratory data. It is deduced that regolith material can, under favourable circumstances, maintain a very underdense structure (porosity of the surface layer greater than 90 per cent) in air, so that vacuum cold-welding is not essential in the formation of such a structure. Photometric scanning is shown to provide a rapid method of determining the effective porosity of regolith sample surfaces in the laboratory." @default.
- W2063012421 created "2016-06-24" @default.
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- W2063012421 date "1973-01-01" @default.
- W2063012421 modified "2023-09-28" @default.
- W2063012421 title "A photometric investigation of the packing state of apollo 11 lunar regolith samples" @default.
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- W2063012421 doi "https://doi.org/10.1016/0032-0633(73)90023-8" @default.
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