Monte Carlo simulation for a wound contamination measurement method with a CdZnTe detector

Takahashi, Akina; Watanabe, Yuki ; Fujisawa, Makoto; Hosomi, Kenji  

We are developing a wound contamination measurement method using a CdZnTe detector that is portable and capable of measuring energy spectra, assuming wound contamination by workers who handle radioactive materials. In this study, performance tests of the CdZnTe detector and tests under different measurement conditions, such as the type of radionuclide, source position, etc., were conducted, and a Monte Carlo simulation model of the detector was constructed using the calculation code PHITS. Using this model, we report a comparison between the measured values of the human body shape phantom and the calculated values using the ICRP phantom, assuming the measurement of a worker.