Compton Camera Measurements of Radiation Distribution Images at Hamadori, Fukushima Prefecture

Abstract

  Large amounts of radioactive materials were spread over the surrounding environment caused by the accident of the Fukushima Daiichi Nuclear Power Plant. Since some areas are still in the difficult-to-return zone, it is important to understand the radiation distribution in these areas. We measured the radiation distribution by using a Compton camera and an optical camera in these areas. As a result of the actual measurement, we were able to identify the radiation source location and its spatial extension by filming the high-dose area from various positions and angles.