论文标题
一种新型的耦合RPL/OSL系统，以了解亚稳态的动力学
A novel coupled RPL/OSL system to understand the dynamics of the metastable states
论文作者
论文摘要
通过电荷（电子和孔）在固体中以电荷（电子和孔）捕获形式。它们在剂量学，信息存储以及光子学的许多医学和工业应用中发挥着重要作用。尽管进行了数十年的研究，但确切的机制导致发光信号，例如光学/热刺激的发光（OSL或TL）或通过电荷跨亚稳态态通过电荷转移的长时间发光仍然知之甚少。我们缺乏理解归功于这样一个事实，即这种发光信号源于多个步骤，例如电荷（DE）诱捕，运输和重组，这是无法单独跟踪的。在这里，我们提出了一个新型耦合的RPL（射量光发光）/OSL系统，基于一个无处不在的，天然的，地球矿物质的电子陷阱，称为Feldspar（铝硅酸盐）。 RPL/OSL允许分别了解被困电子的动力学和捕获孔的动力学。我们阐明了首次陷阱分布，热驱逐和辐射引起的捕获电子和孔的生长。这里提供的新方法和见解对于地球和环境科学中的发光日期的下一代模型应用至关重要，例如热化学计和光学计。
Metastable states form by charge (electron and hole) capture in defects in a solid. They play an important role in dosimetry, information storage, and many medical and industrial applications of photonics. Despite many decades of research, the exact mechanisms resulting in luminescence signals such as optically/thermally stimulated luminescence (OSL or TL) or long persistent luminescence through charge transfer across the metastable states remain poorly understood. Our lack of understanding owes to the fact that such luminescence signals arise from a convolution of several steps such as charge (de)trapping, transport and recombination, which are not possible to track individually. Here we present a novel coupled RPL(radio-photoluminescence)/OSL system based on an electron trap in a ubiquitous, natural, geophotonic mineral called feldspar (aluminosilicate). RPL/OSL allows understanding the dynamics of the trapped electrons and trapped holes individually. We elucidate for the first time trap distribution, thermal eviction, and radiation-induced growth of trapped electron and holes. The new methods and insights provided here are crucial for next generation model-based applications of luminescence dating in Earth and environmental sciences, e.g. thermochronometry and photochronometry.
