Abstract

A core scintillation counter which measures transmitted gamma radiation was applied to determine wet bulk density of cores of marine sediment sealed in plastic liners. A preliminary evaluation indicates that two principal problems affecting accuracy of bulk density determinations are: (1) the radioactive source emits random radiations, which must be treated statistically to determine the dependence of counting accuracy on number of counts, and (2) the Compton mass attenuation coefficient, which must be known in order to calculate density from scintillation counts, varies significantly with sediment composition and water content.

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