Scintillation and dosimeter properties of CaF2 translucent ceramic produced by SPS
Scintillation and dosimeter properties of CaF2 translucent ceramic produced by SPS
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DOI：
10.1016/j.jeurceramsoc.2016.11.016
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发表时间：
2017-04
影响因子：
5.7
通讯作者：
Fumiya Nakamura;Takumi Kato;G. Okada;N. Kawaguchi;K. Fukuda;T. Yanagida
中科院分区：
文献类型：
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作者：
Fumiya Nakamura;Takumi Kato;G. Okada;N. Kawaguchi;K. Fukuda;T. Yanagida
采用放电等离子烧结（SPS）技术制备了CaF 2半透明陶瓷，并与CaF 2单晶进行了闪烁和剂量计性能的比较。在X射线照射下，由于自陷激子（STE），在270和300 nm处观察到光发射。CaF 2半透明陶瓷在137 Cs辐照下的闪烁光产额约为6000光子/MeV，比单晶体小约2倍。在X射线照射后，陶瓷样品的余辉水平低于单晶的余辉水平。在100 ° C和150 °C下，在陶瓷和单晶样品中都观察到热释光（TSL）发光峰，但TSL强度比单晶样品强得多。
We have developed CaF2translucent ceramics by spark plasma sintering (SPS) and investigated the scintillation and dosimeter properties, in comparison with a CaF2single 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 CaF2translucent ceramic was measured to be about 6000 photons/MeV under137Cs 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.