Upgrading of the Neutron Activation Analysis Facility: A Laboratory in the Massachusetts Institute of Technology Center for Geochemical Analysis

中子活化分析设施升级：麻省理工学院地球化学分析中心实验室

• 批准号: 9910529
• 负责人: Frederick Frey
• 金额: $ 6.3万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910529&HistoricalAwards=false
• 关键词: Upgrading; Neutron; Activation; Analysis; Facility

9910529FreyThis grant supports upgrade of the Neutron Activation Analysis (NAA) Facility in the Earth, Atmospheric, and Planetary Sciences, Department at the Massachusetts Institute of Technology. The major aspect of the upgrade is to acquire a state of the art spectroscopy platform which integrates data acquisition and reduction into a single computer system. In addition, a Ge semi-conductor will be acquired as well as improvements to the sample preparation facilities. The facility is supervised by Professor F.A. Frey and Dr. P. Ila. It is principally used to determine abundances of trace elements in volcanic and mantle rocks. Specifically gamma ray spectroscopy following neutron irradiation in the MIT Nuclear Reactor is used to determine abundances of 10 to 25 elements in 0.1 to 0.5 grams of powdered rock. This facility is used by MIT undergraduates and graduate students in the MIT and joint MIT-WHOI programs as well as researchers from other universities in the northeast U.S. (e.g., University of Massachusetts at Amherst). Two ongoing major projects are: (1) Studies of lavas recovered by the Hawaii Scientific Drilling Project whose goal is to sample the entire growth and evolution of a Hawaiian volcano; and (2) studies of lavas related to the 115 Million year volcanic history of the Kerguelen plume in the eastern Indian Ocean. This project includes geochemical research on igneous rocks recovered from the Kerguelen Plateau by Ocean Drilling Program Leg 183 and basalts from the Kerguelen Archipelago obtained in a collaborative effort involving scientists from the USA, France and Belgium. ***

9910529 FreyThis grant supports upgrade of the Neutron Activation Analysis（NAA）Facility in the Earth，Atmospheric，and Planetary Sciences，Department at the马萨诸塞州理工学院.升级的主要方面是获得一个最先进的光谱平台，将数据采集和处理整合到一个单一的计算机系统中。 此外，还将购置一个锗半导体，并改进样品制备设施。 该设施由F.A.教授监督。Frey和P. Ila博士。 它主要用于测定火山岩和地幔岩中微量元素的丰度。 具体地说，在MIT核反应堆中中子辐照后的伽马射线光谱法用于确定0.1至0.5克粉状岩石中10至25种元素的丰度。 该设施由麻省理工学院的本科生和研究生在麻省理工学院和联合MIT-WHOI计划以及来自美国东北部其他大学的研究人员使用（例如，位于阿默斯特的马萨诸塞州大学）。 两个正在进行的主要项目是：（1）研究夏威夷科学钻探项目所回收的熔岩，其目标是对夏威夷火山的整个生长和演变进行取样;（2）研究与东印度洋凯尔盖朗火山柱1.15亿年火山史有关的熔岩。 该项目包括对大洋钻探计划第183航次从凯尔盖朗高原发现的火成岩和美国、法国和比利时科学家合作从凯尔盖朗群岛获得的玄武岩进行地球化学研究。***