Technician Support (Phase ll) for the Neurton Activation Analysis Facility in the EAPS Department at MIT

9406120 Frey该奖项为麻省理工学院地球、大气和行星科学系中子活化分析实验室的操作和维护提供部分资金支持。该实验室是一个专门分析天然材料，主要是陆地岩石和矿物的设施。伽马射线光谱学用于确定许多微量元素的丰度，用作示踪剂，以更好地了解形成地壳和地幔的过程。该设施的仪器由半导体探测器、多通道分析仪和计算机控制组成。该设施用于首席研究员和麻省理工学院的同事以及其他美国科学家的赞助地球化学研究，包括来自其他大学和学院的教师和学生，主要是在东北部。*** 9406684 Johnson该奖项为威斯康星大学麦迪逊分校地质与地球物理系放射性同位素实验室的一名技术人员提供部分资金支持。该技术人员将协助操作和维护实验室的设备，包括多收集器热电离质谱仪和用于样品制备和数据分析的相关仪器。该实验室是众多校内外科研人员在地球科学研究和教学项目中所需要的质谱分析资源。研究应用包括北冰洋沉积物、地幔地球化学、火山作用、密歇根盆地和威斯康星拱省碳酸盐的地质年代学、太古宙和元古代花岗岩。该技术人员还将参与实验室的技术发展工作，包括开发用于定量测量同位素铪的新方法。＊＊＊

9406120 Frey This award provides partial funding for the support of a technician assigned to the operation and maintenance of the Neutron Activation Analysis Laboratory in the Department of Earth, Atmospheric, and Planetary Sciences at the Massachusetts Institute of Technology. The laboratory is a facility dedicated to the analysis of natural materials, principally terrestrial rocks and minerals. Gamma ray spectroscopy is used to determined the abundance of many trace elements, used as tracers to better understand the processes which have formed the Earth's crust and mantle. The instrumentation of the facility consists of semi- conductor detectors, multichannel analyzers, and computer control. The facility is used for sponsored geochemical research of the Principal Investigator and colleagues at MIT and by a diverse group of other U.S. scientists, including faculty and students from other universities and colleges, principally in the northeast. *** 9406684 Johnson This award provides partial funding for the support of a technician assigned to the Radiogenic Isotope Laboratory in the Department of Geology and Geophysics at the University of Wisconsin, Madison. The technician will assist in the operation and maintenance of the laboratory's equipment that includes a multicollector thermal ionization mass spectrometer and associated instrumentation for sample preparation and data analysis. The laboratory is a resource for mass spectrometric analysis needed in research and teaching projects in the earth sciences by a large number of researchers on-campus and off-campus. Research applications include work on Arctic Ocean sediments, mantle geochemistry, volcanism, geochronology of carbonates in the Michigan Basin and Wisconsin Arch provinces, and Archean and Proterozoic granites. The technician will also participate in the technical developmental work of the laboratory, including the development of new methods for the quantitative measurement of the iso topes of hafnium. ***