LAUSR

Abstract In this study, we have developed MgF 2 :Gd transparent ceramics by spark plasma sintering (SPS) and evaluated the scintillation, dosimeter and optical properties. All the sample were successfully synthesized in a transparent form with relative densities over 99% to that of the single crystal. The samples were confirmed to show scintillation, thermally-stimulated luminescence (TSL) and optically-stimulated luminescence (OSL). The origin of these emissions was due to the 4f-4f transitions of Gd 3+ appearing as a single peak at 310 nm. In particular, the TSL was very sensitive to X-rays, and especially the 1% Gd-doped sample showed a sensitivity as low as 0.1 mGy. The TSL response increases monotonically with the irradiation dose, and the dynamic range was confirmed to be over 0.1–1000 mGy, which was equivalent sensitivity to that of commercial personal dosimeters.