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KMID : 1151820220160040381
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Journal of the Korean Society of Radiology
2022 Volume.16 No. 4 p.381 ~ p.386
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A Study on the Feasibility of Lead(II) Iodide and Gd2O2S:Tb Overlapping Sensors in Gamma Source Conditions using FLUKA Simulation
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Yang Seung-Woo
Park Yoon-Hee
Park Ji-Koon
Heo Ye-Ji
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Abstract
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Non-Destruction Test (NDT) is a method to check internal defects without destroying the product. Among them, radiographic testing (RT) uses high-energy radiation, so it is very important to prevent radiation exposure of workers. Therefore, in this study, in this study, a radiation sensor structure that improves radiation detection performance compared to the existing PbI2 and can immediately detect accidents in RT was presented. For evaluation, the conversion efficiency was analyzed in the gamma ray source through FLUKA simulation. PbI2 with overlapping Gd2O2S:Tb presented in this study showed a higher radiation sensitivity from 1.22 to 3.22 times than that of non-overlapping PbI2. This indicates that the presented sensor is suitable for use as a radiation sensor for source detection in RT.
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KEYWORD
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PbI2, Gd2O2S:Tb, FLUKA simulation
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