U.S.-Denmark Cooperative Research on Dosimetric Applicationsof Optically Stimulated Luminescence

该奖项支持俄克拉荷马州立大学的Stephen McKeever教授与丹麦罗斯基勒Riso国家实验室核安全研究部的Lars botter - jensen博士开展合作研究。他们研究的最终目的是开发光激发发光（OSL）在回顾性辐射剂量测定中的应用技术。他们目前的研究是调查天然材料（如石英和长石）中OSL灵敏度变化的机制。在对乌克兰切尔诺贝利进行研究期间，里索率先取得的最新进展表明，普通房屋砖块中发现的硅酸盐矿物可能被用作当地的剂量计。与McKeever博士合作，将材料物理计算机建模的专业知识引入丹麦集团独特的实验设施。更好地了解由于热历史或其他因素而在样品之间发生的灵敏度变化，将使他们能够开发技术来提高这些测量的灵敏度。与麦基弗博士的合作似乎有可能进一步增强。这是辐射物理学中一项不同寻常的基础研究，在辐射照射测量方面可能有非常宝贵的实际应用。开发一种更好的当地剂量计对美国和全世界都很重要，因为测量当地环境的辐射暴露历史是一个主要问题。如果成功的话，使用当地天然材料的简单方法将允许对放射性污染的范围和程度进行快速的径向测绘。＊＊＊

9400070 McKeever This award supports Professor Stephen McKeever of Oklahoma State University to initiate collaborative research with Dr. Lars Boetter-Jensen of the Nuclear Safety Research Department of Riso National Laboratory, Roskilde, Denmark. The ultimate objective of their research is to develop techniques for the application of Optically Stimulated Luminescence (OSL) in retrospective radiation dosimetry. Their current research is investigating the mechanisms of OSL sensitivity variations in natural materials such as quartz and feldspar. Recent developments pioneered at Riso during studies at Chernobyl in the Ukraine suggest that the silicate minerals found in common house bricks could potentially be employed as local dosimeters. Collaboration with Dr. McKeever brings expertise in computer modeling of materials physics to the unique experimental facilities of the Danish group. A better understanding of the sensitivity variations which occur among samples as a result of thermal history, or other factors, will enable them to develop techniques to enhance the sensitivity of these measurements. Further enhancements seem likely as a result of the collaboration with Dr. McKeever. This is an unusual fundamental study in radiation physics which could have very valuable practical applications in the measurement of radiation exposures. The development of a better local dosimeter is important to both the U.S. and the world at large since the measurement of radiation exposure history to local environments is of major concern. If successful, the simplicity of methods using natural local materials would allow rapid radial mapping of the extent and degree of radioactive contamination. ***