Temperature dependence on the dose response of the Fricke-gelatin-xylenol orange gel dosimeter

The effect of temperature during optical absorbance measurements and irradiation on the values of the molar absorption coefficient, (ε_m)_t, and radiation chemical yield, G_t^′, respectively, for the Fricke–gelatin–xylenol orange (FGX) gel dosimeter were investigated. At 20 °C, the product (ε_m)_tG_t^′ was found to be 6.76×10⁻³ m² J⁻¹. While an irradiation temperature coefficient, k₂, was evident (−0.53% °C⁻¹), no temperature effect was found during measurement in the range 16–25 °C.