The focus of this study lies in exploring the properties of thermoluminescence (TL) in nano-alumina, including the correlation between TL intensity and absorbed dose, identification of individual luminescence peaks, and investigation of trap parameters for potential dosimetry applications. The samples were irradiated by Co with doses ranging from 530 to 2646 Gy. Micro-sized α-AlO had a prominent dosimetry peak at maximum temperature T = 435 K. Nano-α-AlO samples with 40 and 50 nm particle sizes exhibited a TL luminescence glow curve, with the main dosimetry peak in the low-temperature region and a complex structure at higher temperatures (above 500 K). The observed maximum of the main dosimetry peak depended on the nanoparticle size and was 460 K for the sample with particle size of 40 nm and 467 K for 50 nm. The main dosimetry peak was described by the superposition of the two peaks.

中文翻译：

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γ射线辐照纳米氧化铝的热释光特性

本研究的重点在于探索纳米氧化铝的热释光 (TL) 特性，包括 TL 强度与吸收剂量之间的相关性、单个发光峰的识别以及潜在剂量测定应用的陷阱参数的研究。样品经 Co 辐照，剂量范围为 530 至 2646 Gy。微米级α-Al2O在最高温度T = 435 K时具有突出的剂量峰。粒径为40和50 nm的纳米α-Al2O样品表现出TL发光曲线，主剂量峰位于低温区以及较高温度（500 K 以上）下的复杂结构。观察到的主剂量测定峰的最大值取决于纳米颗粒的尺寸，对于颗粒尺寸为 40 nm 的样品为 460 K，对于 50 nm 的样品为 467 K。主要剂量测定峰由两个峰的叠加来描述。