Andryushchenko A. Porous scintillators for determination of alpha- and beta-radiating radionuclides in environmental waters

Research subject: processes of scintillating material obtaining which selective absorb of Sr-90 and transuranic elements. Research aim: developing of scintific-technological aspects of material production for the selective determination of the low concentration of alpha- and beya radionuclides in environmental waters. Research methods: atomic-emission spectrometry with inductively coupled plasma, beta-radiometry, methods of scintillation parametres determination. Porous scintillator was obtained, in which sorbent and scintillation characteristics were combined and 4п-geometry of radiation registration was realized. The technological scheme of porous scintillator production was developed which guarantees the necessary reproducibility of analysis results. The correlation between conditions of the composite preparation process and sorption and scintillation properties of material was found. The effect of the physicochemical parameters of the sorbtion-scintillation material on the mechanical, sorption andscintillation properties was determined.The method of sorption-scintillation determination of Sr-90 in the environmental water was developed. The material was testing for analysis environmental waters from Chernobul nuclear plant region. The scope: nuclear physics, radiarion safety, radioecological monitoring.