Study on the γ-ray irradiation effect on a new radiochromic film

A new radiochromic film is developed by using a polymer as the base and doping an organic dye and an organic halide. It is a clear transparent solid film, but it becomes blue after irradiated by γ-ray. As shown in the UV-VIS spectrum of irradiated films, the peak in visual region locates about 624 nm, and there is a linear relationship between the net optical density and absorbed dose in dose range from 10 kGy to 90 kGy. The chemical reaction mechanism of the radiation effect on the radiochromic film has also been researched.