US-UK Cooperative Research: Studies of Thermoluminescence and Catholuminescence

美英合作研究：热释光和阴极发光研究

• 批准号: 8821998
• 负责人: Stephen W.S. McKeever
• 金额: $ 1.22万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-01 至 1991-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8821998&HistoricalAwards=false
• 关键词: US; UK; Cooperative; Research; Studies

This award will support collaborative research between Dr. S. W. McKeever, Oklahoma State University and Dr. P. D. Townsend, University of Sussex, England. Dr. McKeever will spend six months in Dr. Townsend's laboratory, working on three distinct projects: 1) conductivity and cathodoluminescence of II-VI semiconductors, 2) absorption and luminescence of doped lithium fluoride and 3) the thermoluminescence (TL) of quartz. During this period, Dr. McKeever will make extensive use of apparatus for the recording of 3D TL glow-curves and of cathodoluminescence. The 3D TL facilities in particular are unique and not available at Dr. McKeever's home institution. The materials which will be studied are cadmium telluride, lithium fluoride and silicon dioxide. Each of these materials has significant technological importance. In the CdTe work, the investigators will examine edge emission during low temperature cathodoluminescence in order to study bound exciton relaxation luminescence. The purpose is to characterize the excitonic states in different samples and to use this information in the study of the non-linear optical properties of the material. The '3D' TL apparatus will be used for the lithium fluoride studies. The lithium fluoride samples are variously doped with copper, magnesium, and phosphorus impurities. The investigators will look for evidence of perturbations in the emission due to impurity clustering effects within the lattice. These properties are to be used in assessing the optimal impurity concentrations and method of production of lithium fluoride: copper, magnesium, and titanium for dosimetry applications. The silicon dioxide work will involve cathodoluminescence and 3D TL measurements to examine the effects on the luminescence properties of various thermal, radiation and electrolitic sweeping treatments in order to more clearly understand the TL behavior of this material. Dr. McKeever is internationally well known in the field of thermoluminescence and its application in dosimetry and in dating of natural sediments.

该奖项将支持博士之间的合作研究。W. 俄克拉荷马州州立大学的麦基弗博士和P. D.汤森， 英国苏塞克斯大学。 麦基弗医生将花六个月的时间 在汤森博士的实验室里，从事三个不同的项目： 1)II-VI族半导体的导电性和阴极射线发光，2） 掺杂氟化锂的吸收和发光; 石英的热释光（TL）在此期间，McKeever博士 将广泛使用设备记录三维TL 发光曲线和阴极射线发光。 3D TL设施 特殊的是独一无二的，在McKeever博士的家里是没有的。 机构。 将要研究的材料是碲化镉、锂 氟化物和二氧化硅。 这些材料中的每一种都具有 重要的技术意义。 在CdTe工作中， 研究人员将在低温下检查边缘发射 阴极发光，以研究束缚激子弛豫 发光 目的是表征激子态 在不同的样本中，并将这些信息用于研究 材料的非线性光学特性。 “3D”TL 仪器将用于氟化锂研究。 的 氟化锂样品用铜进行各种掺杂， 镁和磷杂质。 调查人员会调查 对于由于杂质引起的发射扰动的证据， 晶格内的聚集效应。 这些属性将被 用于评估最佳杂质浓度和方法 生产氟化锂：铜、镁和钛 用于剂量测定应用。 二氧化硅的工作将涉及 阴极射线发光和三维TL测量，以检查效果 对各种热、辐射和 电解清洗处理，以便更清楚地 了解该材料的TL行为。 麦基弗医生 在热致发光领域是国际上众所周知的， 其在剂量测定和天然沉积物定年中的应用。