Abstract

The possibility of designing phoswich detectors comprising organic polycrystalline scintillators for simultaneous and separate detection of β and γ rays has been investigated. Activated n-terphenyl polycrystals of a certain thickness were produced for these detectors by molding solution-grown raw material in the shape of plates at premelting temperatures. It is shown that the spectrometric and radiometric characteristics of the phoswich detectors can be improved by using these polycrystals, as well as by gluing two scintillators by optical adhesive compositions based on high-purity polymethyl phenylsiloxane rubber.

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