抄録
This paper presents method of building a wide range and high density radiation source map by using accessible dosemeter. Radioactivities spread across eastern Japan because of Fukushima No. 1 nuclear power plant accident. Then they have piled up and made high dose spots in our living area. Radiation source map building is needed for streamlining decontamination work and reducing exposure. There are some problems in building radiation source map.One of the problems is that there is no way to build a high density map by accessible measure method. Our approach is to measure dose with accessible dosemeter and estimate ground surface radiation source from the dose distribution and 3D map based on radiation attenuation characteristic in order to solve a problem of low density.
