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Slow Positron Investigation of the Moon Regolith Fine Fraction from Probes of the Automatical Moon Station "Luna-24"

Lifetime studies of positron annihilation was used for the investigation of the probes of Moon regolith and model powder samples. In the regolith case the degree of amorphisation and glass grain size lower limit were found. For the model mixtures of glass-crystal powders the predominant diffusion from glass to crystal grains was noticed at the grain sizes less or equal than 2 μm.