A trivalent Dy³⁺-activated K₃Ca₂(SO₄)₃F fluoride-based phosphor was synthesized using a solid-state reaction method and characterized for its thermoluminescence (TL) application. The crystal structure and surface morphology of the as-synthesized material was analyzed using X-ray diffraction and scanning electron microscopy. A series of the K₃Ca₂(SO₄)₃F:Dy³⁺ phosphor was irradiated using γ-rays from a ⁶⁰Co source and TL glow curves were recorded using a Nucleonix 1009I TL reader. The glow curve of the prepared phosphor showed a prominent single peak at 278°C. TL characteristics were maximum intensity at 1 mol% of Dy³⁺ ion with a single TL glow peak. The TL glow curve revealed linearity with increase in exposure dose range from 0.1 kGy to 3.0 kGy. Theoretical analysis of the TL glow curve of the γ-ray-irradiated sample was carried out using a computerized glow curve deconvolution method and trapping parameters such as activation energy and frequency factor were calculated using the initial rise method and Ilich’s method. The synthesized Dy³⁺-doped K₃Ca₂(SO₄)₃ phosphor revealed excellent TL properties and was found to be a potential candidate for dosimetric applications.

中文翻译：

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K3Ca2(SO4)3F:Dy3+ 荧光粉的热释光剂量特性和动力学分析

采用固态反应法合成了三价 Dy ³⁺活化的 K ₃ Ca ₂ (SO ₄ ) _{3 F 氟化物基荧光粉，并对其热致发光 (TL) 应用进行了表征。}使用 X 射线衍射和扫描电子显微镜分析所合成材料的晶体结构和表面形态。使用来自60 _{_ _ _} _ _{_} _ ^_ _ ^_使用 Nucleonix 1009I TL 阅读器记录 Co 源和 TL 辉光曲线。制备的荧光粉的辉光曲线在 278°C 处显示出显着的单峰。TL特性是在1 mol%的Dy ³⁺离子具有单个TL发光峰的最大强度。TL 辉光曲线显示随着暴露剂量范围从 0.1 kGy 到 3.0 kGy 的增加呈线性关系。采用计算机化辉光曲线反卷积法对γ射线辐照样品的TL辉光曲线进行理论分析，并采用初始上升法和Ilich法计算活化能和频率因子等俘获参数。合成的Dy ³⁺掺杂K ₃ Ca ₂ (SO ₄ ) ₃荧光粉显示出优异的 TL 特性，并被发现是剂量学应用的潜在候选者。