Abstract
An analytical method for determining total activity in water samples is described. The method depends on the direct relationship between the average energy deposited in a liquid scintillator solution and the channels ratio recorded for two different portions of the total energy spectrum. Calibration curves are constructed using single energy beta emitters. Samples are first counted at low gain for medium to high energy activity, followed by a second count at high gain to record total activity. Results obtained by this method for both synthetic and reactor effluent samples were quantitative (3–7%) compared with results obtained by low-background beta counting (42–100%).
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