Abstract

The Cherenkov counting efficiency varies strongly with color quenching, thus correction curves must be used to obtain correct results. The external 152Eu source of a Quantulus 1220 TM liquid scintillation counting (LSC) system was used to obtain a quench indicative parameter based on spectra area ratio. A color quench correction curve for aqueous samples containing 90Sr/ 90Y was prepared. The main advantage of this method over the common spectra indicators is its usefulness also for low level Cherenkov counting.

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