수산식품 내 방사성물질 검출을 위한 방사능 검사장치의 전산모사 모델 검증

Abstract

National and regional government in Korea are conducting radioactivity tests to confirm whether radioactive materials are accumulated on seafood more than the amount regulated by law (i.e., 100 Bq/kg). The current inspection method using an HPGe detector has a limitation in that rapid inspection cannot be performed because of a time-consuming pretreatment process as well as long measurement time. To overcome this limitation, we are developing an in-situ inspection system, as a screening system, that can monitor radioactivity in seafood in a near real-time basis. In this study, to verify the Monte Carlo simulation model of this inspection system, we compared the energy spectrum of the Cs-137 check source obtained by experiments with the simulation results using the MCNP code. It was found that the measured and simulated energy spectrum were in good agreement less than 4% difference.