Semiconductor Physics, Quantum Electronics & Optoelectronics, 26 (1), P. 089-096 (2023).
DOI: https://doi.org/10.15407/spqeo26.01.089

Investigation of gamma-ray sensitivity of YAG:Ce based scintillation structures

D.V. Pekur 1*, D.N. Khmil 1, Yu.Yu. Bacherikov 1, A.H. Mammadli 2, J.A. Naghiyev 3, N.Y. Suleymanova 2, C.Y. Abbasova 2, S.I. Lyubchyk 4

1V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 41, prosp. Nauky, 03680 Kyiv, Ukraine
2 Institute of Radiation Problems Ministry of Science and Education of the Republic of Azerbaijan,
9, B. Vahabzade str., Baku, Azerbaijan, AZ 1143
3 Nuclear Research Department of the Innovation and Digital Development Agency,
Ministry of Digital Development and Transport of the Republic of Azerbaijan,
Gobu Settlement of Absheron dist., Baku Shamakhy HW 20 km, Baku, Azerbaijan AZ 0100
4 REQUIMTE, NOVA School of Science and Technology, University New of Lisbon, 2829-516 Caparica, Portugal
5 DeepTechLab, Universidade Lusofona, Campo Grande, 376, 1749-024 Lisboa, Portugal
* Corresponding author e-mail: demid.pekur@gmail.com

Abstract. Ionizing radiation is widely used nowadays for diagnosing and probing a wide range of objects due to the high reliability and quality of the results obtained in such research. Use of highly sensitive ionizing radiation sensors enables the reduction of the radiation dose involved in the research. Moreover, sensitive systems for monitoring environmental parameters may be also created based on such sensors. In this work, the efficiency of a low density radiation detector with the composite scintillation structure based on powdery YAG:Ce phosphor as the converting coating of photosensitive detector was investigated. The possibility to detect gamma radiation from the 241 Am and 137 Cs based sources by the ionizing radiation detector comprising YAG:Ce 3+ composite converting scintillation structure and micropixel avalanche photodiode (MAPD) was found. The number of detected gamma rays emitted by the 241 Am source was shown to increase linearly with the thickness of the composite converting scintillation structure. The thickness of the composite converting scintillation structure of 495 µm was found to enable registration of gamma-rays with the energies in the range of 26 to 662 keV.

Keywords:ionizing radiation, scintillation structure, YAG:Ce phosphor, low density radiation detector.

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