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Information × Registration Number 0220U104614, 0120U105504 , R & D reports Title Luminescent properties of heterostructured materials with the ability to separate signals of ionizing radiation. popup.stage_title Head Yashchuk Valerii M., Доктор фізико-математичних наук Registration Date 23-12-2020 Organization Taras Shevchenko National University of Kyiv popup.description2  The object of research - electronic processes that occur in organic systems as a result of their excitation due to various factors. The aim of the project is to study the luminescent properties of heterostructured organic materials with the ability to separate signals of ionizing radiation and to study the physical mechanisms that determine the ability of these materials to select different types of radiation. Research methods - optical spectroscopy. Experimental methods for studying the absorption spectra, instantaneous and delayed fluorescence, as well as phosphorescence of organic scintillators at temperatures of 300 K and 77 K have been developed. Processing and preliminary analysis of research results have been carried out. It is shown that for stilbene and paraterphenyl solutions the absorption and fluorescence spectra are mainly monomolecular. The luminescence spectra of these substances in the solid state are more complex, which is due to the transfer of electron excitation energy in these systems. At the same time, there is a dependence of the spectra of delayed radiation at 77 K on the size of the granules, which can be used by developers of systems for recording ionizing radiation. Product Description popup.authors Hrynʹ Dmytro V. Losytskyy Mykhaylo Yu. Nikolayeva Olena A. Navozenko Oleksandr M. popup.nrat_date 2020-12-23 Close