Possible use of food grade Isomalt material as an EPR dosimeter

Abstract

Abstract The feasibility of using Isomalt “the food grade substance” as electron paramagnetic resonance (EPR) material in monitoring the absorbed dose has been studied. Isomalt was prepared in two forms (powder and rods). The sensitivity of Isomalt to gamma rays exceeded by increasing the absorbed dose. The prepared powder can be used in monitoring the absorbed dose in the dose range up to 22 kGy, whereas the rods can be used in the range from 5 to 50 kGy (almost double the allowed powder range). After irradiation two signals were recorded using the EPR technique addressed as S1 and S2 with (g) factor valued by 2.01 ± 0.002 and 1.993 ± 0.002 respectively. This dosimeter offers negligible humidity effect during irradiation, short and long term stabilities were investigated as well. The obtained results may qualify the Isomalt substance to be used as dose monitoring in low and moderate irradiation doses.