Department of Physics, College of Science, Jazan University, P.O. Box. 114, Jazan, 45142, Kingdom of Saudi Arabia.
Igdir University, Vocational School of Health Services, Karaagac Campus, 76000, Igdir, Turkey.
Appl Radiat Isot. 2023 Apr;194:110686. doi: 10.1016/j.apradiso.2023.110686. Epub 2023 Jan 19.
With the aid of thermoluminescence (TL), we have extensively studied YAl(BO) host matrices incorporated with Tb at different doping contents, which have been produced by combustion. The measured the TL glow curves exposed to beta rays at different doses consisted of four broad peaks located at around 76, 126, 230, and 378 °C. The peak maximum of the 230 °C TL peak shifts toward higher temperatures after 5 Gy beta irradiation while the other peak maxima almost remain constant. It is peculiar that 230 °C peak maximum shifts to higher temperatures with increased radiation dose and can be attributed to the multiple phases of the sample. A TL glow curve exhibits a proportional increase in intensity with increased the heating rate. A discussion of the possible causes of this pattern is provided. Observed peaks using the T─T method are due to the presence of a quasi-continuous distribution of traps. The parameters of the traps have also been estimated using various heating rate methods in excellent agreement with one another.
借助热释光（TL），我们广泛研究了不同掺杂浓度的 Tb 掺入的 YAl(BO) 基质，这些基质是通过燃烧法制备的。在不同剂量下，暴露于β射线的测量 TL 发光曲线由四个宽峰组成，位于约 76、126、230 和 378°C。在 5 Gyβ辐照后，230°C TL 峰的峰最大值向高温移动，而其他峰最大值几乎保持不变。值得注意的是，230°C 峰最大值随辐射剂量的增加而向高温移动，这可归因于样品的多相性。TL 发光曲线的强度随加热速率的增加呈比例增加。对这种模式的可能原因进行了讨论。使用 T─T 方法观察到的峰是由于存在准连续分布的陷阱。使用各种加热速率方法还可以很好地彼此一致地估计陷阱参数。
