Abstract
Abstract The effects of temperature and humidity during γ irradiation on the response of two types of film dosimeters (Far Wesr radiachromic and GafChromic films) were studied in the dose range of 0.3–3 kGy. Both films show a significant effect of temperature and humidity and a simple correction function is proposed. This correction is usually between 5 and 10% for the range studied. For the GafChromic film, a colour change at temperatures above 50°C was observed and, consequently, this system cannot be used at these temperatures. At lower temperatures down to - 70°C the sensitivity of both films is reduced and a simple correction is possible. In this study and for the dose ranges used, only a slight dependence on humidity was observed for both films from 0 to 60% r.h. Whereas the GafChromic film at humidities up to 90% r.h. shows only a moderate effect, the Far West films shows a considerable inconsistency for the dose range studied. A simple correction function may be applied for humidity effects, except for the Far West film above 60% r.h. where the effect of humidity is also dose dependent.
Published Version
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