Strontium phosphate (SrO–PO–AlO–GdO) glasses with 0.05, 0.1, 0.5, and 1 mol % CeO were prepared by the conventional melt quenching technique. These glasses' luminescence, scintillation, and physical properties were measured and discussed in detail. The density, refractive index, and oxygen packing density of the studied glasses were increased with an increase in CeO concentration. At lower concentrations of CeO, the characteristic 310 nm emission from Gd and broadband emission from Ce ions were obtained under X-ray excitations. The intensity of both Gd and Ce emission bands under 270 nm Gd excitations reduced with further increase in CeO, showing the delayed energy transfer from Gd to Ce ions. The integrated X-ray-induced luminescence intensity of 0.5% CeO glass was found to be 21% that of reference BGO crystal. For the lower concentration of CeO, a slow decay time along with the fast Ce decay was observed and disappears for higher CeO concentrations. The fast luminescence decay in the range of 22 ns–30 ns was observed for all the PSAG:Ce glasses, which was attributed to the lifetime of the 4f-5d transition of the Ce ions. The faster decay time and reasonable scintillation light suggest the application of these glasses for radiation detector applications.

中文翻译：

---

Ce3+激活磷酸锶玻璃的物理和发光性能

通过传统的熔融淬火技术制备了含有 0.05、0.1、0.5 和 1 mol% CeO 的磷酸锶 (SrO-PO-Al2O-GdO) 玻璃。对这些玻璃的发光、闪烁和物理特性进行了详细测量和讨论。研究玻璃的密度、折射率和氧堆积密度随着 CeO 浓度的增加而增加。在较低浓度的 CeO 下，在 X 射线激发下获得了 Gd 的特征 310 nm 发射和 Ce 离子的宽带发射。在 270 nm Gd 激发下，Gd 和 Ce 发射带的强度随着 CeO 的进一步增加而降低，表明从 Gd 到 Ce 离子的能量转移延迟。 0.5% CeO 玻璃的 X 射线诱导发光积分强度为参考 BGO 晶体的 21%。对于较低浓度的 CeO，观察到缓慢的衰减时间以及快速的 Ce 衰减，并且对于较高的 CeO 浓度则消失。所有 PSAG:Ce 玻璃都观察到 22 ns–30 ns 范围内的快速发光衰减，这归因于 Ce 离子 4f-5d 跃迁的寿命。更快的衰减时间和合理的闪烁光表明这些玻璃可用于辐射探测器应用。