Abstract Alexandrite mineral (BeAl2O4:Cr3+) powder incorporated in a fluorinated polymer was prepared in the form of pellets. A mixture with 20 wt% of the alexandrite in the pellet had the luminescence behavior evaluated as a function of exposure to ionizing radiation using the optically stimulated luminescence (OSL) technique. The OSL measurements were evaluated in terms of dose-response (beta dose from 0.1 to 5 Gy), repeatability, reproducibility, and fading. The results showed that the OSL intensity signal varied linearly with the irradiation dose and that the OSL intensity suffered a strong reduction during the first five days of storage in the dark but remained stable for at least the following 30 days. Radioluminescence (RL) measurements under X-ray excitation revealed a weak luminescence within the ultraviolet–visible spectral region, while optical absorption (OA) measurements revealed the presence of Cr3+ impurities.

中文翻译：

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表征经 β 辐照的亚历山大变石-聚合物复合材料的光受激发光 (OSL) 响应

摘要 掺入氟化聚合物的亚历山大变石矿物 (BeAl2O4:Cr3+) 粉末以颗粒形式制备。粒料中含有 20 wt% 变石的混合物的发光行为被评估为使用光受激发光 (OSL) 技术暴露于电离辐射的函数。OSL 测量在剂量反应（β 剂量从 0.1 到 5 Gy）、重复性、再现性和衰落方面进行评估。结果表明，OSL 强度信号随辐照剂量呈线性变化，并且 OSL 强度在黑暗中储存的前 5 天大幅降低，但至少在接下来的 30 天内保持稳定。X 射线激发下的辐射发光 (RL) 测量显示在紫外-可见光谱区域内有微弱的发光，