Radiofluorescence of Quartz: Challenges and application of a new dating technique

石英的放射性荧光：新测年技术的挑战和应用

• 批准号: 246779181
• 负责人: Professor Dr. Markus Fuchs
• 金额: --
• 依托单位: Bereich Physische Geographie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/246779181?language=en
• 关键词: Radiofluorescence; Quartz; Challenges; application; new

Since the early beginnings in the 1950s, luminescence dating techniques have become one of the most important dating techniques in Quaternary research. The datable event is the last sunlight exposure (optically stimulated luminescence, OSL) or heating (thermally stimulated luminescence, TL) of natural minerals like quartz or feldspar. Luminescence processes during measurement occur in the course optical (OSL) or thermal (TL) stimulation. In contrast, radiofluorescence (RF) is observed during irradiation. For feldspar RF has been successfully tested for dating application on sediments. For natural quartz separates, however, only little is known since only few studies are available. Using innovative measurement equipment, the aim of this project is to evaluate the potential of RF of quartz for use as a dating method. Intended as a preliminary study, the project promotes methodological research in luminescence dating and consists of five parts: (1) selection and investigation of quartz reference samples using standard methods (e.g. ICP-MS, X-ray diffractometry), (2) investigation of basic RF characteristics of the chosen quartz samples, (3) development of a software tool for RF dating analysis using the numerical programming language R, (4) development of a preliminary measurement protocol for RF dating of quartz, (5) optional: comparison of RF dating results with conventionally (OSL/TL) determined luminescence ages. The project is seeking for a better understanding of the RF phenomenon of quartz in particular and for deeper insights into fundamental luminescence processes in general.

自1950年代早期起步以来，发光约会技术已成为第四纪研究中最重要的约会技术之一。数据事件是天然矿物质（如石英或长石）的最后一次阳光暴露（光学刺激的发光，OSL）或加热（热刺激的发光，TL）。测量过程中的发光过程发生在课程光学（OSL）或热（TL）刺激中。相反，在辐照过程中观察到放射性荧光（RF）。对于Feldspar，RF已成功地测试了在沉积物上的约会应用。但是，对于天然石英分离，由于只有很少的研究可用，因此几乎没有知名度。使用创新的测量设备，该项目的目的是评估石英射频的潜力作为约会方法。该项目旨在作为一项初步研究，促进了发光日期的方法论研究，并由五个部分组成：（1）使用标准方法（例如ICP-MS，X射线衍射法）选择和研究石英参考样品，（2）研究所选石英样品的基本RF特征，（3）使用数值编程语言R的开发用于RF约会分析的软件工具r，（4）开发用于rf的初步测量协议，用于rf的射频，（5）可选：比较： RF年期的结果（OSL/TL）确定的发光年龄。该项目正在寻求更好地理解石英的RF现象，而对一般的基本发光过程有了更深入的了解。