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http://dx.doi.org/10.1016/j.net.2022.01.007

Reference dosimetry for inter-laboratory comparison on retrospective dosimetry techniques in realistic field irradiation experiment using 192Ir  

Choi, Yoomi (Korea Atomic Energy Research Institute)
Kim, Hyoungtaek (Korea Atomic Energy Research Institute)
Kim, Min Chae (Korea Atomic Energy Research Institute)
Yu, Hyungjoon (Korea Institute of Nuclear Safety)
Lee, Hyunseok (Korea Institute of Nuclear Safety)
Lee, Jeong Tae (Korea Institute of Nuclear Safety)
Lee, Hanjin (Korea Institute of Nuclear Safety)
Kim, Young-su (Korea Atomic Energy Research Institute)
Kim, Han Sung (Korea Institute of Radiological & Medical Sciences)
Lee, Jungil (Korea Atomic Energy Research Institute)
Publication Information
Nuclear Engineering and Technology / v.54, no.7, 2022 , pp. 2599-2605 More about this Journal
Abstract
The Korea Retrospective Dosimetry network (KREDOS) performed an inter-laboratory comparison to confirm the harmonization and reliability of the results of retrospective dosimetry using mobile phone. The mobile phones were exposed to 192Ir while attached to the human phantoms in the field experiment, and the exposure doses read by each laboratory were compared. This paper describes the reference dosimetry performed to present the reference values for inter-comparison and to obtain additional information about the dose distribution. Reference dosimetry included both measurement using LiF:Mg,Cu,Si and calculation via MCNP simulation to allow a comparison of doses obtained with the two different methodologies. When irradiating the phones, LiF elements were attached to the phones and phantoms and irradiated at the same time. The comparison results for the front of the phantoms were in good agreement, with an average relative difference of about 10%, while an average of about 16% relative difference occurred for the back and side of the phantom. The differences were attributed to the different characteristics of the physical and simulated phantoms, such as anatomical structure and constituent materials. Nevertheless, there was about 4% of under-estimation compared to measurements in the overall linear fitting, indicating the calculations were well matched to the measurements.
Keywords
Retrospective dosimetry; KREDOS; Field test; Inter-laboratory comparison; TLD; Computational phantom;
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Times Cited By KSCI : 1  (Citation Analysis)
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