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对于电离辐射剂量计的LiCaPO4的合成,特征和热发光特性
Md Raghib Rahat1, Homaira Afia Mimi1, Shah Azharul Islam1
1Department of Physics, Begum Rokeya University, Rangpur, Bangladesh.
概括
合成了酸 (LiCaPO4),并评估了其热发光 (TL) 特性. 这种显示出有希望的线性剂量反应和低色,这表明它有可能用于辐射剂量计应用.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 辐射检测 辐射检测 辐射检测
背景情况:
- 热发光 (TL) 是辐射剂量计的一个关键性质.
- 酸盐材料正在探索低剂量剂量测量.
- 酸 (LiCaPO4) 具有有趣的TL特性.
研究的目的:
- 使用简单的低温固态方法合成LiCaPO4.
- 研究LiCaPO4.4的结构,发光和TL特性.
- 为潜在的剂量测量应用确定TL的动力参数.
主要方法:
- 修改的固态扩散方法用于LiCaPO4合成 (低于800°C).
- 射线衍射 (XRD),拉曼和里埃变换红外光谱 (FTIR) 用于结构和分子分析.
- 用6.0 MV光子和6.0 MeV电子 (0.5-6.0 Gy) 进行辐射.
- 使用热发光光光曲线分析,用陈模型确定剂量线性,灵敏度,色和动力参数,使用光曲线解卷 (GCD).
主要成果:
- 阶段纯LiCaPO4具有面结构,由XRD证实.
- TL光曲线显示了光子和电子辐射在200°C和240°C左右的两个峰值.
- 在0.5-6.0 Gy范围内观察到线性剂量反应.
- 确定了低色率 (在28天后<3%的信号损失) 和良好的灵敏度.
- 计算了动力参数 (激活能量,动力学顺序).
结论:
- 合成的LiCaPO4表明适合用于辐射剂量计的TL特性.
- 它的线性剂量反应,灵敏度和低色率表明了实际应用的潜力.
- 对LiCaPO4的进一步研究可能会导致先进的剂量测量工具.
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