The study evaluated the structural and thermoluminescence (TL) kinetic parameters of smartphone screen protector glasses in order to use them for post-accident dose reconstruction from unplanned nuclear events. The fact that most individuals use mobile phones in working environments including nuclear power plant sites, served as the impetus for the study. The TL glow curves indicate the physical properties of the defects involved in the luminescence process; therefore, they have been analyzed to study the TL kinetic parameters by employing peak shape, initial rise and glow curve deconvolution method within the dose ranges from 2 to 50 Gy. The geometric factor (μg) ranges between 0.46 and 0.56, suggesting that Chen's general-order method can be used to compute the kinetic parameters, including activation energy (E), frequency factor (s) and trap lifetime (τ). The examined trapping parameters (E = 0.33–0.57 eV, s = 5.22E+03–8.65E+06 s−1 for peak shape and E = 0.36–0.96 eV, s = 2.90E+04–1.88E+11 s−1 for initial rise methods) suggest promise for TL dosimetry applications. Additionally, the observed lifetime (τ = 4.88E+5 s) implies the feasibility of dose reconstruction even several days after an accident, making it suitable for retrospective dosimetry. Micro-Raman spectroscopy revealed a clear correlation between increasing gamma radiation dose and microstructural damage. The analysis of intensity ratio (ID/ISi) for other components to silica, along with the area of deconvoluted micro-Raman spectra in high-frequency regions, indicated dose-dependent structural modifications and internal defect annealing. Further confirmation of structural alterations within the studied dose range was obtained through the analysis of crystallite size (Lc), dislocation density (δ), lattice strain (ɛ) and FWHM (Full Width at Half Maximum) from XRD (X-ray diffraction) patterns. These findings collectively suggest the potential of smartphone screen protector glass as a viable material for emergency dosimetry applications.

中文翻译：

---

研究用于回顾性剂量测定的智能手机屏幕保护玻璃的结构和 TL 动力学参数


该研究评估了智能手机屏幕保护玻璃的结构和热释光 (TL) 动力学参数，以便将其用于意外核事件的事故后剂量重建。大多数人在包括核电站在内的工作环境中使用手机这一事实成为了这项研究的动力。 TL发光曲线表明了发光过程中涉及的缺陷的物理性质；因此，在2至50 Gy的剂量范围内，采用峰形、初始上升和辉光曲线反卷积方法对它们进行分析以研究TL动力学参数。几何因子（μg）范围在0.46和0.56之间，表明Chen的广义阶方法可用于计算动力学参数，包括活化能（E）、频率因子（s）和陷阱寿命（τ）。检查的捕获参数（峰形 E = 0.33–0.57 eV，s = 5.22E+03–8.65E+06 s−1，E = 0.36–0.96 eV，s = 2.90E+04–1.88E+11 s−1 1 对于初始上升方法）表明了 TL 剂量测定应用的前景。此外，观察到的寿命（τ = 4.88E+5 s）意味着即使在事故发生几天后也可以进行剂量重建，使其适合回顾性剂量测定。显微拉曼光谱揭示了伽马辐射剂量增加与微观结构损伤之间存在明显的相关性。其他组分与二氧化硅的强度比 (ID/ISi) 分析以及高频区域的解卷积微拉曼光谱面积表明存在剂量依赖性结构修饰和内部缺陷退火。 通过 XRD（X 射线衍射）分析微晶尺寸 (Lc)、位错密度 (δ)、晶格应变 (ɛ) 和 FWHM（半峰全宽），进一步确认了所研究剂量范围内的结构变化模式。这些发现共同表明智能手机屏幕保护玻璃作为紧急剂量测定应用的可行材料的潜力。