Upgrade of the University of Kentucky ARL SEMQ Electron Probe Microanalyzer

这项提案寻求资金，以升级肯塔基大学现有的应用研究实验室SEMQ电子探针。所要求的升级包括更换波束形成和成像电子设备的部件，购买部件以改善成像能力并加强定性和定量分析，以及升级计算机软件和硬件。由于仪器的陈旧和最近相当长的停机时间，人们正在寻求电子设备的升级。翻新的部件将从制造商那里采购。为了提高成像能力，需要一个阴极发光(CL)探测器和一个用于波长色散分析的OV98多层晶体。一种新的带有帕尔蒂埃冷却的EDS成像系统将为新探测器提供分析灵活性。新的软件/硬件将包括将Probe Windows升级到企业版，以及一台用于容纳DAQ板和运行软件的新计算机。仪器升级将用于正在进行的NSF EAR资助和其他研究项目。主要目标包括：1)锆石和独居石年代学-CL成像将是阐明成分信息的关键组成部分，而自动化的阶段性ED光谱分析将促进地质年代学的重建，2)使用可视化功能进行石榴石和其他硅酸盐分带分析-将使用X射线制图来评估温度、年代学和结构分析，3)减压微构造-逆行榴辉岩、高压麻粒岩及其包裹体将被用于更好地了解古生代碰撞造山作用的埋藏和折返历史，4)古地震活动和岩石成因-假玄武岩(PST)将被分析，以评估地层温度和流体状态5)煤和页岩的地球化学和矿物学--将使用WDS和EDS对煤和黑色页岩中的有机和无机成分进行评估，以及6)对考古文物进行SE、BSE和EDS分析，以确定其来源和用途。目前的探测器有四个波长色散光谱仪，一个BSE和一个EDS。新的CL探测器和晶体将纳入现有仪器配置，并由拟议的软件升级提供支持。该仪器被安置在一个现代化的、功能强大的设施中，提供充足的服务。部门资金用于气体和液氮。仪器服务由PI和研究生执行。服务合同由大学提供资金。使用费在志愿服务时收取。***

0824714MoecherThis proposal seeks funding to upgrade the existing Applied Research Laboratories SEMQ electron microprobe at the University of Kentucky. Requested upgrades include replacing components of the beam-forming and imaging electronics, purchasing components to improve the imaging capabilities and enhance qualitative and quantitative analyses, and upgrading computer software and hardware. Electronics upgrades are sought due to the instrument?s age and considerable recent down-time. Refurbished components will be sourced from the manufacturer. To improve imaging capabilities, a cathodoluminescence (CL) detector is requested along with an OV98 multilayer crystal for wavelength dispersive analysis. A new EDS imaging system with Peltier cooling will provide analytical flexibility for the new detectors. New software/hardware will consist of upgrades to Probe for Windows to Enterprise edition and a new computer to hold DAQ boards and run software. The instrumentation upgrade will be employed for on-going NSF EAR-funded and other research projects. Major objectives include: 1) zircon and monazite geochronology - CL imaging will be a key component for elucidating compositional information, while automated stage positioned ED spectral analysis will facilitate geochronologic reconstructions, 2) garnet and other silicate zoning analysis using visualization capabilities - thermobarometry, geochronology and structural analysis will be assessed using X-ray mapping, 3) decompression microstructures - retrograde eclogites, high-pressure granulites, and their inclusions will be used to better understand the burial and exhumation history of Paleozoic collision orogenesis, 4) Paleoseismicity and petrogenesis - pseudotachylyte (PST) will be assayed in order to assess formation temperatures and fluid states, 5) coal and shale geochemistry and mineralogy - organic and inorganic components will be evalued using WDS and EDS in coals and black shales, and 6) SE, BSE and EDS analysis of archeological artifacts in order to characterize their origins and uses. The current probe has four wavelength dispersive spectrometers, a BSE, and an EDS. The new CL detector and crystal will be incorporated into the existing instrument configuration and supported by the proposed software upgrade. The instrument is housed in a modern, capable facility with ample services. Departmental funds are used for gases and liquid nitrogen. Instrument service is performed by the PI and graduate students. A service contract is funded by the University. Usage fees are collected when volunteered. ***