Radiation defects in quartz are widely used in trapped charge chronometry. Analytical function which simulates dose–response curve is a very important for the correct measurement of equivalent dose. Ge- and Ti-related centers in quartz which may be used in electron paramagnetic resonance (EPR) dating have non-monotonic dose–response curves. In addition to accumulation, very significant parameter of radiation centers is their thermal stability. Obtained in this work results show that increase of concentration of paramagnetic Ge- and Ti-centers in quartz at the beginning of annealing may be explained by the existence of electron centers with two captured electrons which are not detected with used EPR spectrometer. Proposed model of formation and recombination processes satisfactorily simulates the experimental data—the dose dependencies and isothermal annealing data. It also explains why first- or second-order kinetics used in previous investigations cannot simulate annealing dependences correctly.

中文翻译：

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石英中 Ti 和 Ge 相关中心的退火动力学

石英中的辐射缺陷广泛用于俘获电荷计时。模拟剂量-反应曲线的分析函数对于正确测量等效剂量非常重要。可用于电子顺磁共振 (EPR) 测年的石英中与 Ge 和 Ti 相关的中心具有非单调的剂量反应曲线。除了积累，辐射中心非常重要的参数是它们的热稳定性。在这项工作中获得的结果表明，在退火开始时石英中顺磁性 Ge 和 Ti 中心浓度的增加可能是由于电子中心的存在和两个捕获电子的存在，而使用 EPR 光谱仪无法检测到这些电子。提出的形成和复合过程模型令人满意地模拟了实验数据——剂量依赖性和等温退火数据。它还解释了为什么先前研究中使用的一阶或二阶动力学无法正确模拟退火依赖性。