Study on conversion methods for air dose-rates measured inside and outside of a monitoring car in the Fukushima environment

Shibamichi, Masaru; Shimomura, Ryohei*; Takeishi, Minoru ; Saegusa, Jun

Conversion method for air dose-rates from inside to outside of a monitoring car was investigated in the Fukushima environment. Two detectors were installed at different height in the car, and Ratio between two different height dose rates in the car and dose rate above 1m height at outside same position were measured at more than 20 locations in the Fukushima environment. Conversion from dose rate in the car to that of outside were evaluated taking into account for the ratio between two dose rates measured in the car. As a result, conversion from dose rate in the car to that at outside were improved.