Spiral Capillary Plastic Scintillation Flow Counter for Beta Assay

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Abstract
Tracer counting of beta emitters in aqueous solution was performed with a detector fabricated from a plastic scintillator capillary. The detector exhibits low gamma background and reproducible detection efficiency, and it requires minimum sample preparation. Counting efficiencies were determined for aqueous solutions of P 32 , Na 22 , and C 14 and for C 14 O 2 gas.

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