Abstract Undoped and Eu-doped Sr2MgSi2O7 single crystals were synthesized using the optical Floating Zone method, and the photoluminescence and scintillation properties were evaluated. A broad emission band at 470 nm is observed in the Eu-doped samples in photoluminescence and scintillation spectra. The decay curves demonstrate that it is due to the 5d–4f transition of Eu2+. The 2.0% and 5.0% Eu-doped samples show the highest scintillation light yield of 10,400 ph/MeV under γ–rays irradiation from 57Co, and the best afterglow level of 50 ppm among the present samples, respectively.

中文翻译：

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Eu掺杂Sr2MgSi2O7单晶闪烁体的研制

摘要 采用光学浮区法合成了未掺杂和掺Eu的Sr2MgSi2O7单晶，并对其光致发光和闪烁性能进行了评价。在光致发光和闪烁光谱中，在掺铕样品中观察到 470 nm 处的宽发射带。衰减曲线表明这是由于 Eu2+ 的 5d-4f 跃迁。2.0% 和 5.0% Eu 掺杂的样品在 57Co 的 γ 射线照射下显示出最高的闪烁光产率为 10,400 ph/MeV，在现有样品中分别显示最佳的余辉水平为 50 ppm。