Optical, scintillation and dosimeter properties of MgO transparent ceramic doped with Mn<sup>2+</sup> [in Japanese]
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We have investigated the photoluminescence (PL), scintillation and thermally-stimulated luminescence (TSL) dosimeter properties of MgO transparent ceramics doped with different concentrations of Mn<sup>2+</sup> ion (0.001, 0.01, 0.1 and 1%). The samples were synthesized by a Spark Plasma Sintering (SPS) technique. All the samples show a PL band emission around 730 nm, and the intensity increases with the dopant concentration. The PL decay time constants were a few milliseconds which is on the typical order for Mn<sup>2+</sup> ion. In contrast, the scintillation spectrum under X-rays shows additional emissions at 340, 620 and 760 nm. After the samples are irradiated by X-rays, the TSL is observed with a main glow peak appearing around 140°C. The TSL response is linearly related to the irradiation dose at least over the dose range from 0.1 to 1000 mGy.
- Journal of the Ceramic Society of Japan
Journal of the Ceramic Society of Japan 124(5), 559-563, 2016
The Ceramic Society of Japan