Evaluation of the effect of temperature variation on response of PRESAGE (R) dosimeter

Abstract

Introduction: Many factors, such as PRESAGE (R) composition, dose rate, energy, and type of radiation, temperature, etc., may effect on PRESAGE (R) dosimeter response. The aim of this study was investigating the effect of temperature variation on response of PRESAGE (R) solid dosimeter. Materials and Methods: In this study, a PRESAGE (R) solid detector was fabricated. Ninety-four percent weight polyurethane, 5% weight carbon tetrachloride, and 1% weight leucomalachite green were used. Radiological and physical characteristics of PRESAGEs (R), such as mass density, electron density, and effective number atomic were obtained and compared with water. Response of PRESAGE (R) dosimeter in temperatures-4, 10, 25, 35, 45, 55, 65, 75, 85, and 90 degrees C was evaluated. In addition, the absorption peak at various temperatures was investigated. Results: The results showed that the absorption peak at different temperatures was in the range of 630-635 nm. For temperatures below 75 degrees C, the results indicated that temperature variation has no effect on the response of PRESAGE (R) dosimeter whereas at the temperatures > 75 degrees C, temperature variation has an effect on PRESAGE (R) dosimeter response. Conclusion: The finding showed that temperature changes have not impact on the absorption peak. In addition, the results related to the effect of temperature variation on the response of PRESAGE (R) dosimeter showed that in the range of clinical applications ( temperatures below 75 degrees C), temperature variation has no effect on PRESAGE (R) dosimeter response.