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Discussion of Hp(3) calibration with two thermoluminescent dosimeters in the same standard X-ray RQR radiation field |
LI Wenyan, ZHANG Guiying, LIU Lantao, NIU Dongsheng, GUO Zeqin, WANG Zhichao, TUO Hua, WU Heyan, XIA Tingting, CHU Nini, LAI Jichuan, CHEN Jiaojiao |
Radiochemistry Laboratory of Radiation Technology Department, Beijing Prevention and Treatment Hospital of Occupational Disease for Chemical Industry, Beijing 100093 China |
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Abstract Objective To compare Hp(3) calibration with a homemade (A) thermoluminescent dosimeter (TLD) and an imported (B) TLD in a standard X-ray RQR radiation field, to explore the different responses of A and B, and to provide foundation for the calibration of Hp(3). Methods A column mode was selected. Hp(3) calibration was performed using A and B in a standard X-ray RQR radiation field in the Secondary Standard Dosimetry Laboratory, National Institute for Radiological Protection, China Center for Disease Control and Prevention. Angle response, energy response, and linear response were calibrated with RQR4 (60 kV), RQR7 (90 kV), and RQR9 (120 kV), respectively. Results In terms of angle response, the calibration results of A were relatively high, while the calibration results of B were relatively low. In terms of energy response, the calibration results showed a similar pattern to angle response. In terms of linear response, the calibration results of both A and B were satisfactory. Conclusion Both A and B can be used for normal calibration of Hp(3) in a standard X-ray RQR radiation field. However, in actual monitoring, attention should be paid to the energy and angle response values of TLDs.
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Received: 19 December 2023
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