闪烁体
闪烁
光致发光
Crystal(编程语言)
物理
单晶
双β衰变
产量(工程)
闪烁计数器
核物理学
材料科学
分析化学(期刊)
光学
化学
核磁共振
探测器
计算机科学
热力学
中微子
程序设计语言
色谱法
作者
Yingying Chen,Qingli Zhang,Haotian Zhang,Jiayu Gao,Yabai He,Yunrong Gao,Lili Zheng,F. Yang,Xiaofei Wang,Renqin Dou,Peng Chen
标识
DOI:10.1016/j.jlumin.2022.119663
摘要
A good quality Zr:GdTaO4 single crystal with an 8.84 g/cm3 density, higher than the well-known dense scintillator PbWO4, was successfully synthesized by the Czochalski method for the first time. The effective segregation coefficient of Zr in Zr:GdTaO4 is 0.288. The light yield and the energy resolution of Zr:GdTaO4 are approximately the same as GdTaO4. The scintillation decay time of Zr:GdTaO4 contains a fast decay of 9.51 ns, close to the fast scintillator PbWO4, and a slow decay of 755.61 ns, which is much faster than that of GdTaO4 whose fast decay time is 101.82 ns and slow decay time is 3290.52 ns. With Zr4+ doping, the photoluminescence band of GdTaO4 is blueshifted and the traps are shallowed, which may help accelerate the scintillation decay. As far as we know, the Zr:GdTaO4 single crystal is the densest scintillator with a less than 10 ns scintillation decay time, which can be used in electromagnetic calorimeters.
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