Radiochromic film dosimeter based on povidone-iodine for gamma dosimetric applications

Abstract A novel radiochromic polymeric film dosimeter based on povidone-iodine was prepared. The spectrophotometric properties of unirradiated and gamma-irradiated films were investigated using a UV–Vis spectrophotometer. This study proved that the polymeric films of PVP-I/PVA can be used as gamma radiation dosimeters in the dose range from 1 to 25 kGy as their color appears and intensity increases with increasing gamma radiation absorbed dose peaking at λ max = 295 nm and 365 nm. The stability of the color of the polymeric films, effects of temperature and relative humidity were measured. These film dosimeters can be applied in many fields as they have many advantages.