Physico-chemical studies for strontium sulfate radiation dosimeter

Abstract

Anhydrous strontium sulfate (SrSO4) has shown a promise candidate as a dosimeter for low dose applications producing unique EPR signals with γ-rays which it has a linear response relationship (r2 = 0.999) in the range of 1–100 Gy. The present study extended to evaluate the properties of strontium sulfate dosimeter in intermediate dose range of technology applications. It was observed that the intensity of the EPR signal at g = 2.01081 increases with a 3rd polynomial function in the range of 0.10–15 kGy. In addition, the radical (SO4−) provides a stable signal with a good reproducibility (0.107%). Other physics characteristic including the collision of mass stopping power dependence of the system and the effect of atomic number in different energy regions were investigated. The uncertainty budget for high doses has obtained from the measurement with value of 3.57% at 2σ confidence level.

Keywords

• Strontium sulfate
• Radiation dosimetry
• EPR spectrometer
• Inorganic materials