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Information × Registration Number 0219U001341, 0116U001775 , R & D reports Title Organic polycrystalline scintillators for the problems of identification of alpha- and beta radionuclide sources of radiation in natural waters. popup.stage_title Head Galunov Nikolay Zaharovich, Доктор фізико-математичних наук Registration Date 25-01-2019 Organization Scientific-research department of alkali halide crystals with experimental manufacture STC "Institute for single crystals" NAS of Ukraine popup.description2 A series of the samples of p-terphenyl polycrystals doped with 1,4-diphenylbutadiene-1,3, with holes filled by synthetic hydroxyapatite (SGA) as a sorbent was obtained and investigated. It has been shown that for these samples the efficiency of a detection of beta-particles of 90Sr isotope sorbed from the aqueous sample is in the range of 83 to 90 %. The measurements of the sorption degree of 90Sr isotope by a polycrystalline scintillator and the relative fraction of a sorbent in the samples after their saturation were carried out. The dependence of the detected activity of samples A as the function of the introduced activity А0 by 90Sr isotope was investigated. It was obtained that the dependence of A as a function of А0 has a linear character. The simulation of light collection processes in polycrystalline samples was carried out and the coefficients of light collection and the absolute light yield were calculated. Product Description popup.authors Караваєва Н.Л. Тарасенко О.А. popup.nrat_date 2020-04-02 Close