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Information × Registration Number 0224U001392, 0123U101435 , R & D reports Title Development of a new approach to obtain organic polycrystalline scintillators popup.stage_title Head Tarasenko Oleh A., Доктор фізико-математичних наук Registration Date 22-01-2024 Organization Institute for scintillation materials NAS Ukraine popup.description2 The scintillation and optical characteristics of the obtained samples of quasi-single crystals and polycrystals were studied; a comparison of these characteristics with similar characteristics of samples obtained by standard methods was made. The effect of pressure, temperature, and exposure time of p-terphenyl polycrystals during pressing on their optical and scintillation properties was studied. It was obtained that the optimal pressing parameters are: pressure 20 MPa, temperature – 180°С, exposure time from 0.5 to 2 hours. Polycrystals with an exposure time of 0.5 hour had maximum transparency, and with an exposure time of 2 hours – maximum light output. It is shown that for p-terphenyl polycrystals obtained by the new approach, the values of light output relative to the standard p-terphenyl single crystal are 125-150% and 135-150% when excited by alpha particles and conversion electrons, respectively. The analysis and interpretation of experimental results was carried out in order to improve the proposed new approach to obtaining organic crystalline scintillators. Product Description popup.authors Lazariev Ihor V. Minenko Sergii S. Martynenko Eugenia V. Tarasenko Oleh А. popup.nrat_date 2024-01-22 Close