Abstract 0–3% Ce-doped CaYAl3O7 single crystals were grown by the optical Floating Zone method, and the photoluminescence and scintillation properties were measured. Except for the undoped sample, all the samples show photoluminescence and scintillation dominantly with a broad band around 380–520 nm due to the 5d-4f transitions of Ce3+. The decay curves are well-fitted by one or a sum of two exponential functions. The 1st and the 2nd components are due to the 5d-4f transition of Ce3+ and intrinsic luminescence in the host material, respectively. Suggested from the pulse height spectra under irradiation of γ-rays from 137Cs, the 0.3% Ce-doped CaYAl3O7 sample shows the highest scintillation light yield of 5400 ph/MeV among the present samples. The energy response exhibits proportional relationship between channel number and radiation energy in the dynamic range of 22–1408 keV.

中文翻译：

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CaYAl3O7 单晶闪烁体中的 Ce 浓度依赖性

摘要 采用光学浮区法生长了0~3% Ce掺杂的CaYAl3O7单晶，并测量了其光致发光和闪烁特性。除了未掺杂的样品外，由于 Ce3+ 的 5d-4f 跃迁，所有样品都显示出主要的光致发光和闪烁，并具有大约 380-520 nm 的宽带。衰减曲线由一个或两个指数函数的和很好地拟合。第一个和第二个分量分别是由于 Ce3+ 的 5d-4f 跃迁和主体材料中的本征发光。从 137Cs γ 射线照射下的脉冲高度光谱表明，0.3% Ce 掺杂的 CaYAl3O7 样品在现有样品中显示出最高的闪烁光产率为 5400 ph/MeV。