Development of evaluation tool for radiation dose from radioactive-polluted building skin

开发了数值模拟工具。该工具由Cs-137在建筑材料表面的行为、Cs-137在多孔介质中随水流的运动以及一维点衰减核方法组成。这种独特的工具可以预测房屋中的预期辐射剂量影响。除此之外，还收集了日本常用的建筑构件的原子组成和密度，并使用Phits代码编制了伽马射线屏蔽性能的数据库。* Phits：http://phits.jaea.go.jp/index.html

A numerical simulation tool is developed. The proposed tool is composed by the behavior of Cs-137 on the surface of building material, movement of Cs-137 accompanied by water flow in porous media, and 1-dimensional point attenuation kernel method. This unique tool can predict the prospective radio-dose impact in houses. On addition to this, for that purpose, atomic compositions and densities of building components commonly used in Japan are collected and make the data-base of gamma-ray shielding performance are prepared by using the Phits codes.*Phits: http://phits.jaea.go.jp/index.html