Abstract

Dyed poly(vinyl alcohol) (PVA) films, prepared by a simple technique of casting acqueous solutions of PVA containing bromophenol blue (BPB) or xylenol orange (XYO) on a horizontal glass plate, are useful as routine high-dose dosimeters. These flexible plastic film dosimeters are bleached when exposed to γ-ray photons. Absorbed doses should not exceed 20 kGy for BPB/PVA film and 90 kGy for XYO/PVA film. The radiation-chemical yield ( G-value) of both films was calculated and found to be 0.205 μmol/J for BPB/PVA and 0.143 μmol/J for XYO/PVA. The effects of irradiation temperature and relative humidity as well as pre- and post-irradiation storage, on the radiation responses of the films are examined. Although the response of these films depends on the irradiation temperature, these films are highly stable before and after irradiation under different storage conditions and are not affected by humidity changes in the intermediate range of relative humidity (10–60%).

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.