Calculation of liquid-scintillation detector efficiency

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Abstract

Definitions of basic notions are given and dependence of counting probabilities of different kinds of scintillation pulses upon energy of beta particles interacting with scintillator are derived. Efficiency of beta-particle counting in liquid-scintillation coincidence detectors is determined. Calculated and experimental counting efficiencies are compared for double and triple detectors.

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    Such instrumentation is generally designed and constructed by national metrology laboratories around the world. The TDCR system allows the observation of double AB, BC, and CA and triple ABC coincidences, making it possible to measure the absolute activity of the radioactive solution, independently of the detection efficiency (Broda et al., 1988; Broda and Pochwalski, 1992; Cassette and Vatin, 1992; Stanga et al., 2006). The reference time and date used were 00:00 UTC, 31 May 2009 -.

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