Dosimetry during mango irradiation using Gafchromic HD-810 film

The dosimetric characteristics of Gafchromic HD-810 film were evaluated for its possible use as a high-dose dosimeter for routine dosimetry during mango irradiation. The film dosimeter sample of size 2 x 2 cm(2) was used throughout the course of this work. The irradiation of the film dosimeter for characterisation and calibration purposes was carried out in a gamma irradiator. The dose-response of the Gafchromic HD-810 film dosimeter at 550 nm was found to be linear in the dose range 50-1000 Gy, which indicates the feasibility of using this film for dosimetry up to 1000 Gy. The mean inter-dosimeter variation was within 2%, which gives better dose-response consistency of the HD-810 film. The radiation absorbed dose measured by the Gafchromic HD-810 film dosimeter during mango irradiation was compared with that measured by a standard Ceric-cerous dosimeter. This study establishes the Gafchromic HD-810 film as a convenient and technically suitable dosimeter for high-dose dosimetry up to 1.0 kGy during mango irradiation.