El-Adawy A, Khaled N E, El-Sersy A R, Hussein A, Donya H
Faculty of Science, Physics department, Menoufia University, Egypt.
Appl Radiat Isot. 2010 Jun;68(6):1132-6. doi: 10.1016/j.apradiso.2010.01.017. Epub 2010 Jan 15.
In this work, the thermoluminescence (TL) dosimetric characteristics of lithium borate glasses have been studied in detail before and after doping with silver. The glass specimens were prepared using a conventional melt-quenching method and checked using X-ray diffraction (XRD) pattern. The resultant glow curve of the undoped gamma-irradiated samples showed one strong peak at about 178 degrees C and at a constant heating-rate (beta) of 5 degrees C/s. While, the Ag-doped samples showed two TL glow peaks around 220 and 320 degrees C, which were mainly attributed to the Ag(+) ions. Trap parameters of glow peaks of the present glass systems were extracted. The dosimetric characteristics of glass specimens were read from the TL gamma-dose response curve, which showed a reasonably good linearity behavior between glow peak areas and gamma-dose values. The present results revealed the importance of using such current selective glass structures as gamma-radiation detectors within the studied dose-range where an acceptably good fading response was observed.
在这项工作中，对掺银前后硼酸锂玻璃的热释光（TL）剂量特性进行了详细研究。玻璃样品采用传统的熔融淬火法制备，并通过X射线衍射（XRD）图谱进行检测。未掺杂的γ辐照样品的热释光曲线在约178℃处有一个强峰，加热速率（β）恒定为5℃/s。而掺银样品在220℃和320℃左右出现两个热释光峰，这主要归因于Ag(+)离子。提取了当前玻璃体系热释光峰的陷阱参数。从热释光γ剂量响应曲线读取玻璃样品的剂量特性，该曲线显示热释光峰面积与γ剂量值之间具有相当良好的线性行为。目前的结果揭示了在研究剂量范围内使用这种当前的选择性玻璃结构作为γ辐射探测器的重要性，在此剂量范围内观察到了可接受的良好衰退响应。
