Upgrade of Electron Microprobe for Earth Science and Materials Research at the University of South Carolina

该提案寻求约16.7万美元的资金，用于购买组件，以升级南卡罗莱纳大学现有的电子微探针（SX-50）。探测器是1986年的古董，需要几个更新的组件，包括硬件和软件。需要一个新的WDS自动化系统，包括一个基于windows的采集和分析计算机，一个新的软件来控制探针和集成EDS和WDS数据，一个新的EDS探测器和相关的采集系统，以及一个新的阴极发光探测器。大学将提供5万美元的配套资金。升级后的EMP设施将使pi能够继续开展包括地质、公共卫生、工程和材料研究在内的多学科研究项目。PI研究火成岩过程，旨在了解与俯冲有关的岩浆的物理和化学过程及其形成条件。感兴趣的地区是阿留申和堪察加半岛。研究通过测量全岩地球化学，Pb、Sr、Nd和Hf同位素比例，以及斑晶和玻璃包裹体EMP分析进行。Co-PI Bizimis利用详细的地幔捕虏体地球化学研究上地幔过程。计划中的电磁脉冲使用包括对矿物边缘反应、扩散剖面、次要基质相和学生训练的详细观察。Co-PI Barbeau研究沉积和构造。重点包括确定矿物元素组成，包括CL分析，确定沉积物来源，以及控制板块构造和运动重建。Co-PI Hintz将使用电磁脉冲更好地了解有孔虫方解石和文石测试中的元素丰度。这些丰度将用作古记录中现有环境条件的代用物。Co-PI Zhao研究地幔过程和核废料管理。电磁脉冲在确定与地幔有关的过程、组成和演化方面将是至关重要的。此外，EMP设施将支持材料研究。EMP被纳入矿物学、火成岩和变质岩石学的本科和研究生课程。其他系（生物系）的教授也教授电磁脉冲方法。目前的调查支持nsf赞助的研究，这些研究产生同行评审的出版物。＊＊＊

0841461Yogodzinski This proposal seeks funding of ~$167K to purchase components to upgrade an existing electron microprobe (SX-50) at the University of South Carolina. The probe is 1986 vintage and needs several updated components, both hardware and software. Requested are a new WDS automation system including a Windows-based acquisition and analysis computer, new software to control the probe and integrate EDS and WDS data, a new EDS detector and related acquisition system, and a new cathodoluminescence detector. The University will contribute $50K in matching funds. The upgraded EMP facility will allow the PIs to continue multidisciplinary research projects encompassing geologic, public health, engineering and materials research. The PI studies igneous processes aiming to understand the physical and chemical processes of subduction-related magmas and the conditions leading to their formation. Areas of interest are the Aluetians and Kamchatka. Studies are conducted by measuring whole-rock geochemistry, Pb, Sr, Nd, and Hf isotopic ration, and phenocryst and glass inclusion EMP analysis. Co-PI Bizimis focuses on upper mantle processes using detailed mantel xenolith geochemistry. Planned EMP use involves detailed observations of mineral rim reactions, diffusion profiles, minor matrix phases and student training. Co-PI Barbeau studies sedimentation and tectonics. Foci include determining mineral elemental compositions including CL analysis, resolving sediment provenance, and contraining plate tectonic and kinematic reconstructions. Co-PI Hintz will use the EMP to better understand elemental abundances in foraminifera calcite and aragonite tests. These abundances will be used as proxies for existing environmental conditions in the paleorecord. Co-PI Zhao studies mantle processes and nuclear waste management. The EMP will be critical in determining mantle-related processes, composition and evolution. Additionally, the EMP facility will support materials research. The EMP is incorporated into undergraduate and graduate-level courses in mineralogy and igneous and metamorphic petrology. Professors from other departments (Biology) also teach EMP methods. The current probe supports NSF-sponsored research which produces peer-reviewed publications. ***