Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (7): 101 doi: 10.1007/s41365-017-0256-1


Energy response correction for electronic personal dosimeter using channel ratio method

Ping Huang1,2, You-De Zhang1, Yong Yang1,2, Cong-Hua Zhang1,3, Lan Gong1,2, Qian Yang1,3   

  1. 1 National Institute of Measurement and Testing Technology, Chengdu 610021, China
    2 Sichuan Radiation Technology Co., Ltd., Chengdu 610021, China
    3 Nimtt Measurement and Testing Technology, Ltd, Chengdu 610021, China
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Ping Huang, You-De Zhang, Yong Yang, Cong-Hua Zhang, Lan Gong, Qian Yang. Energy response correction for electronic personal dosimeter using channel ratio method.Nuclear Science and Techniques, 2017, 28(7): 101     doi: 10.1007/s41365-017-0256-1

Abstract: An electronic personal dosimeter mainly uses a Si-PIN photodiode as X- and gamma-ray detectors. The photon energy response of this instrument is inconsistent in the case of no correction, which seriously affects the accurate monitoring of personal dose equivalent Hp(10) parameters for radiation workers. For this reason, in this paper we propose a method of combining composite screen detection technology, multichannel measurement technology, and the channel ratio method to achieve accurate measurement of the personal dose equivalent parameters. According to China National Standard GB/T 13161-2003 and National Verification Regulation JJG 1009-2006, the instrument was tested in the energy range between 48 keV and 1.25 MeV. The experimental results showed that the difference of energy response to 137Cs corrected by the new method was almost constant within ±6.0%, which fulfilled the±30% requirement of GB/T 13161-2003 and JJG 1009-2006. Meanwhile, the method proposed obtained energy information regarding the radiation field.

Key words: Electronic personal dosimeter (EPD), Si-PIN detector, Photon energy response, Channel ratio method (CRM)