New Radiophotoluminescence Glass Dosimeter with Specialized Radiation-Sensitive Surface Layer

Abstract

A new radiophotoluminescence (RPL) dosimeter with a specialized radiation-sensitive surface layer was successfully fabricated from phosphate glass by the melting method. The radiation-sensitive surface layer, which was measured using an excitation laser and a fluorescence microscope, was formed through the thermal diffusion of silver atoms. It was found from RPL observations that the diffusion coefficient of silver atoms in phosphate glass was about 1.4 mm 2 /s at 400 C and activation energy for silver atoms was about 0.7 eV. It was also confirmed that the newly synthesized dosimeter showed a satisfactory response to alpha rays and the effect of the annealing process on the dosimeter could be estimated on the basis of a thermal diffusion model of silver atoms in the glass. #