DOI QR코드

DOI QR Code

Measurement of low energy beta radiation from Ni-63 by using peeled-off Gafchromic EBT3 film

  • Ji, Wanook (Radioisotope Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Jong-Bum (Radioisotope Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Jin-Joo (Radioisotope Research Division, Korea Atomic Energy Research Institute)
  • 투고 : 2022.02.23
  • 심사 : 2022.05.10
  • 발행 : 2022.10.25

초록

Ni-63 is pure beta source which emits low energy beta particles. The Ni-63 sources were fabricated to develop the beta-voltaic battery which converts decay energy into electrical energy for power generation. Activity distribution of the source was important factor of power producibility of the beta-voltaic battery. Liquid scintillation counter widely used for measurement of low energy beta emitters was not suitable to measure activity distribution. In this study, we used the peeled-off Gafchromic™ EBT3 film to measure the activity distribution of the Ni-63 source. Absorbed dose was increased proportionally to the source activity and exposure duration. The low energy beta particles could transport the energy into the active layer without the polyester protective layer. Also, Activity distribution was measured by using the peeled-off EBT3 film. Two-dimensional dosimetric distribution was suitable to measure the activity distribution. To use the peeled-off EBT3 film is user-friendly and cost-effective method for quality assurance of the Ni-63 sources for the beta-voltaic battery.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government(MSIT) (No.2021M2D1A1039965).

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