二价
闪烁体
离子
闪烁
兴奋剂
分析化学(期刊)
材料科学
吸收(声学)
光子
化学
光学
物理
光电子学
色谱法
复合材料
探测器
有机化学
冶金
作者
Takahiko Horiai,Rikito Murakami,Shunsuke Kurosawa,Yasuhiro Shoji,Akihiro Yamaji,Jan Pejchal,Yuji Ohashi,Mototaka Arakawa,Kei Kamada,Yuui Yokota,Akira Yoshikawa
标识
DOI:10.1016/j.optmat.2017.02.062
摘要
Ce-doped (Gd, La)2Si2O7 scintillators have fast decay time and keep high light output even at high temperature (∼150°C). To improve the scintillation properties such as light output and decay time, Ce-doped (Gd, La)2Si2O7 scintillators codoped with the divalent ions (e.g. Mg2+, Ca2+) have been studied. In this study, we focused on the other divalent ions (Sr2+ and Ba2+), and investigated their effect on the scintillation properties and temperature dependence of light output. The absorption due to Ce4+ was not observed for Sr or Ba codoping. The light outputs were degraded by Sr2+ or Ba2+ codoping, while the decay times at room temperature were not changed for the samples codoped with divalent ions. On the other hand, the temperature dependence of light output for Ba-codoped sample was improved, and the light output value at 175°C was 36,000 photons/MeV, which was 93% of that at 25°C.
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