반도체 검출기를 이용한 Hybrid 전치증폭기형 전자식 개인선량계 개발

Development of Electronic Personal Dosimeter with Hybrid Preamplifier using Semiconductor Detector

  • Lee, B.J. (Korea Atomic Energy Research Institute) ;
  • Kim, B.H. (Korea Atomic Energy Research Institute) ;
  • Chang, S.Y. (Korea Atomic Energy Research Institute) ;
  • Kim, J.S. (Korea Atomic Energy Research Institute) ;
  • Rho, S.R. (The University of Seoul)
  • 발행 : 2002.03.30

초록

반도체 검출기를 이용하여 Hybrid 전치증폭기를 갖는 전자식 개인선량계를 설계 제작하고, 방사선 검출 반응특성과 기계적 및 주변 환경 요건에 따른 각종 성능을 평가하였다. $^{137}Cs$ 감마 방사선을 이용한 방사선 조사 시험결과 감도는 $3.8\;cps/Gy{\cdot}h^{-1}$이고, $10{\mu}Sv{\sim}4Sv$ 범위의 선량당량 조사시 선량계의 지시값은 오차 8%이하에서 선형성이 잘 유지되었다. 방향의존성을 ${\pm}60^{\circ}$ 이내에서 4%이하이며, ISO 기준선장에 의한 에너지 반응영역은 $60{\sim}1,250\;keV$로 나타났으며, IEC 61526에 의한 선량계의 성능검사시 9개 영역의 시험항목에 대한 국제기준을 만족하였다.

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