Nuclear Engineering and Technology

  • 제51권8호
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  • Pages.1991-1997
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  • 2019
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Ambient dose equivalent measurement with a CsI(Tl) based electronic personal dosimeter

  • Park, Kyeongjin (Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Jinhwan (Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lim, Kyung Taek (Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Junhyeok (Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology) ;
  • Chang, Hojong (Institute for Information Technology Convergence, Korea Advanced Institute of Science and Technology) ;
  • Kim, Hyunduk (IRIS Co., Ltd.) ;
  • Sharma, Manish (Department of Nuclear Engineering, Khalifa University) ;
  • Cho, Gyuseong (Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology)
  • 투고 : 2019.02.14
  • 심사 : 2019.06.17
  • 발행 : 2019.12.25
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초록

In this manuscript, we present a method for the direct calculation of an ambient dose equivalent (H* (10)) for the external gamma-ray exposure with an energy range of 40 keV to 2 MeV in an electronic personal dosimeter (EPD). The designed EPD consists of a 3 × 3 ㎟ PIN diode coupled to a 3 × 3 × 3 ㎣ CsI (Tl) scintillator block. The spectrum-to-dose conversion function (G(E)) for estimating H* (10) was calculated by applying the gradient-descent method based on the Monte-Carlo simulation. The optimal parameters for the G(E) were found and this conversion of the H* (10) from the gamma spectra was verified by using 241Am, 137Cs, 22Na, 54Mn, and 60Co radioisotopes. Furthermore, gamma spectra and H* (10) were obtained for an arbitrarily mixed multiple isotope case through Monte-Carlo simulation in order to expand the verification to more general cases. The H* (10) based on the G(E) function for the gamma spectra was then compared with H* (10) calculated by simulation. The relative difference of H* (10) from various single-source spectra was in the range of ±2.89%, and the relative difference of H* (10) for a multiple isotope case was in the range of ±5.56%.

키워드

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피인용 문헌

  1. Improvement of a spectrum-to-dose conversion function for electronic personal dosimeters vol.15, pp.2, 2019, https://doi.org/10.1088/1748-0221/15/02/c02018
  2. Uncertainty Estimation of the Dose Rate in Real-Time Applications Using Gaussian Process Regression vol.20, pp.10, 2019, https://doi.org/10.3390/s20102884
  3. A detector system for searching lost γ-ray source vol.52, pp.7, 2019, https://doi.org/10.1016/j.net.2019.12.021
  4. Performance studies of compact GGAG:Ce,B thermal neutron detector coupled to Si-based photosensors vol.95, pp.4, 2019, https://doi.org/10.1007/s12043-021-02249-z