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Information × Registration Number 0221U106986, 0119U101858 , R & D reports Title Development of new radiation-resistant materials for high-energy physics experiments and nuclear industry needs. popup.stage_title Head Kretch Anton V., Кандидат технічних наук Registration Date 24-12-2021 Organization Institute for scintillation materials NAS Ukraine popup.description2 The choice of radiation-resistant materials for the creation of scintillators for experiments in high-energy physics and for the needs of the nuclear industry has been carried out. The following materials were chosen: GAGG, GYAG, YAGG, YAG and YAP. Composite scintillators were manufactured and irradiated. Additionally, samples were made from LYAG and Al2O3:Ti3+, which were also irradiated with various doses of ionizing radiation. The study of the scintillation characteristics of the obtained composite scintillation materials before and after irradiation with various doses of ionizing radiation has been carried out. The effect of cracking of composite scintillators after irradiation with large doses of ionizing radiation was discovered. A study of mechanical damage to the samples was carried out, and it was found that the cracking of composite scintillators is influenced by the irradiation conditions, namely the environment (air, temperature, humidity, etc.) in the irradiated area. Composite scintillation samples have been shown to crack in the presence of air faster than samples irradiated in vacuum. It has been investigated and found that the main aggressive components, the action of which leads to cracking of the composite scintillator, are nitric acid and possible products of its radiolysis. The cracking process both in an acidic solution with pH = 1 and in the irradiation zone is of the same character. The results of measurements of the optical and scintillation characteristics of the samples of composite scintillators GYAG:Ce, GAGG:Ce, YAGG:Ce, YAG:Ce, LYAG:Ce and Al2O3:Ti3+ before and after irradiation indicate that the above composite scintillators are resistant to doses exceeding D > 150-200 Mrad as a result of irradiation with electrons and an irradiation power of 740 ± 50 Mrad/h, and to doses exceeding D > 100 Mrad, when irradiated with bremsstrahlung photons with an irradiation power of 14.2 to 135 krad/h. Product Description popup.authors Gerasymov Iaroslav V. Karavaeva Natalya L. Kretch Anton V. Tarasenko Oleh A. popup.nrat_date 2021-12-24 Close