ラドカラーフィルムを用いたオートラジオグラフィ法による⁶⁰Co密封線源の内部構造の検査

抄録

In studies using ⁶⁰Co gamma-ray irradiation, an extremely high dose rate is often required and samples must be placed very near a ⁶⁰Co source. The dose rate in the vicinity of the source depends on the inner structure of the source. Therefore, it is necessary to examine the distribution of source activity. As a method of the examination an auto-radiographic technique using several coloring materials for irradiation was tried. The materials used were “Radcolor film” developed by our center, besides a glass, polymethylmethacrylate (PMMA) and a blue cellophane.
Results showed that the autoradiography with Radcolor film is very useful to examine the position, the size and the activity difference of ⁶⁰Co pieces by the change of color.