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Information × Registration Number 0223U004745, 0123U102596 , R & D reports Title Development of effective detection systems for the most harmful ionizing radiation for humans, for radioecology tasks popup.stage_title Head Tarasenko Oleh А., Доктор фізико-математичних наук Registration Date 01-12-2023 Organization Institute for scintillation materials NAS Ukraine popup.description2 Organic scintillation materials for the creation of detectors based on stilbene and p-terphenyl were synthesized and purified, single crystals were grown, the single crystal grains of different sizes were obtained, and several series of polycrystalline and composite scintillators were created. For the both types of heterostructured stilbene scintillators, the similarity of the dependences of the relative light output J and energy separation R on the average size of granules Lav during alpha excitation was determined. For values of Lav greater than 0.8 mm, the value of J, as well as their values of R, do not change significantly. The same was observed for composite scintillators of p-terphenyl. For polycrystalline scintillators, no dependence of J and R on Lav was observed. For composite samples based on both stilbene and p-terphenyl, the values of selective capability (FOM) firstly do not have a certain trend with increasing Lav of the scintillating substance, and secondly, they have a sufficiently high value - on average 76% of the single crystal of stilbene and 70% of p-terphenyl. It is shown that for the considered heterostructured scintillators, as well as for single-crystal scintillators, the standard methods of measuring the light output, optical transmittance and selective capability can be applied. Product Description popup.authors Karavaeva Natalya L. Krech Anton V. Lazariev Ihor V. Martynenko Eugenia V. Makhota Serhiy V. Tarasenko Oleh A. Khromiuk Ilarion F, popup.nrat_date 2023-12-01 Close