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对Dy3+化NaCaPO4的合成和热发光研究

Ajay D Vartha¹, Pratik R Patankar², P D Sahare³

¹Department of Physics, Fergusson College (Autonomous), Pune, 411004, India; Department of Physics, Loknete Ramsheth Thakur, Arts, Science and Commerce College Mokhada, 401604, India; Affiliated to Savitribai Phule Pune University (SPPU), Pune, 411007, Maharashtra, India; Affiliated to Mumbai University, Mumbai, 400098, Maharashtra, India.

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概括

用于热发光 (TL) 剂量测量,合成了一种新型高度敏感的酸和酸,并添加了异 (Dy3+). 这种Dy3+具有广泛的线性剂量反应和优良的可重复使用性,因此适合用于辐射检测.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
辐射检测辐射检测辐射检测

背景情况:

开发用于热发光 (TL) 剂量测量的敏感和可靠的光素对于精确的辐射测量至关重要.
像TLD-700H和TLD-900这样的现有剂量计材料在灵敏度或性能特征上有局限性.
探索新的化合物为改进剂量计应用提供了潜力.

研究的目的:

为了合成和表征一个高度敏感的NaCaPO4:Dy3+微.
为了研究合成的热发光特性,以便在TL剂量测量中潜在使用.
为了比较新的性能与商业剂量计.

主要方法:

使用简单的燃烧方法合成NaCaPO4:Dy3+.
使用X射线衍射 (XRD),扫描电子显微镜 (SEM),电子分散光谱 (EDS) 和光发光 (PL) 的表征.
热发光 (TL) 测量,包括发光曲线分析,剂量响应研究以及与TLD-700H和TLD-900的比较.

主要成果:

NaCaPO4:Dy3+结晶成一个正方体结构 (Pn21a空间组).
优化 (0.4mol% Dy3+,106-125μm颗粒大小,在1200°C冷) 显示最大的TL灵敏度.
在~113°C和~202°C时表现出两个突出的TL峰值,线性剂量响应从1.0Gy到500Gy.
发现它比TLD-900敏感6.0倍,比TLD-700H敏感3.0倍.

结论:

合成的NaCaPO4:Dy3+具有高TL敏感性,广泛和线性剂量反应,以及良好的可重复使用性.
这些特性使其成为热发光剂量测量应用的有希望的候选者.
简单的合成方法进一步增强了其实际使用的潜力.

关键词:

高灵敏度的高灵敏度的高灵敏度 NaCaPO(4):Dy(3+) TLD的含量是什么辐射剂量计是辐射剂量计.陷的参数陷参数广泛的剂量反应反应.

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