Scintillation and dosimeter properties of CaF₂ translucent ceramic produced by SPS

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• 作者：Fumiya Nakamura^a ; ^{nakamura.fumiya.nz9@ms.nasit.jp} ; Takumi Kato^a ; Go Okada^a ; Noriaki Kawaguchi^a ; Kentaro Fukuda^b ; Takayuki Yanagida^a
• 关键词：Translucent ceramic ; Scintillation ; Dosimeter ; Calcium fluoride
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：37
• 期：4
• 页码：1707-1711
• 全文大小：2523 K
• 卷排序：37

文摘

We have developed CaF2 translucent ceramics by spark plasma sintering (SPS) and investigated the scintillation and dosimeter properties, in comparison with a CaF2 single crystal. Under X-ray irradiation, light emission was observed at 270 and 300 nm, due to self-trapped exciton (STE). The scintillation light yield of CaF2 translucent ceramic was measured to be about 6000 photons/MeV under 137Cs irradiation, and this value was smaller than that of the single crystal by a factor of approximately 2. The afterglow level, after X-ray irradiation, of the ceramic sample was lower than that of the single crystal. Thermally stimulated luminescence (TSL) glow peaks were observed at 100 and 150 °C in both ceramic and single crystal samples, however the TSL intensity was much stronger than that of the single crystal sample.