MRI: ACQUISITION OF A MODERN ELECTRON MICROPROBE

威斯康星大学麦迪逊分校正在购买一台现代电子探针（EMP），以取代一台磨损了21年的仪器。它是威斯康星州唯一的电磁脉冲发生器，被许多nsf资助的研究人员大量使用。没有其他技术可以在微米尺度上对主要到痕量元素进行原位化学分析，其通用性和准确性可以与之媲美。它是非破坏性的，允许化学数据与其他形式的分析相关联。现代EMP还将具有新的功能，包括增强成像和更强的LaB6源，可以进行亚微米分析。目前超过116项联邦资助（74项NSF）要求现代EMP的新功能和增强的可靠性，其中地球科学价值1800万美元（64项联邦资助，47项NSF），材料科学价值3000万美元（30项联邦资助，14项NSF），其他部门（化学，物理，湖沼学，土壤，药剂学）价值1900万美元（22项联邦资助，13项NSF）。NSF-EAR支持的项目包括许多深部地壳过程的研究：岩浆系统的岩石成因、火山爆发的原因、麻粒岩和榴辉岩相变质作用的条件、金属和化石燃料的经济矿床的成因、主要剪切带的构造、冥古宙锆石和陨石学。近地表过程的研究包括：天体生物学、古气候学（生物成因碳酸盐和有孔虫、洞穴主题）、成岩作用和盆地演化、浅层断裂带胶结作用和纳米矿物。在材料科学方面，项目包括新材料的合成和新型电子、磁性和光学器件材料的先进加工方法，可再生能源材料/工艺和高温结构。威斯康星大学麦迪逊分校EMP的能力对威斯康星大学麦迪逊分校nsf支持的用于稳定同位素地球化学原位分析的国家设施wissims的运行是必不可少的。在威斯康星大学麦迪逊分校的EMP实验室的能力，建立在其47年的教育，服务和研究的公共利益记录将通过收购现代电子微探针增强。PI和实验室主任John Fournelle博士在20多年的时间里为推进电子显微探针分析科学做出了贡献。由现代EMP推动的研究将解决许多社会关注的问题，包括：古气候、自然资源（石油、天然气、水、金属、战略要素）的开发、火山灾害、环境修复以及具有理想性能的新材料（如电子、耐火材料和陶瓷）的开发。在我们目前的仪器上进行的研究已经发表了650篇论文。学会使用电子探针和评估数据是学生教育发展和成熟的关键组成部分。在过去的20年里，200多名对我们国家经济竞争力至关重要的地球科学和其他STEM学科的研究生，包括66名女性（49名地球科学），使用了我们的EMP实验室进行研究。威斯康星小型学院的地球科学教师带着他们的本科生来到麦迪逊实验室，第一次体验使用微束分析仪器。

The University of Wisconsin-Madison is acquiring a modern Electron Microprobe (EMP) to replace a worn 21-year-old instrument. It is the only EMP in Wisconsin and is heavily used by many NSF-funded researchers. No other technique matches the versatility or accuracy for in situ chemical analysis of major to trace elements at the micron-scale. It is non-destructive, permitting chemical data to be correlated with other forms of analysis. A modern EMP will also have new capabilities including enhanced imaging and a more intense LaB6 source that will permit sub-micron analysis. The new capabilities and enhanced reliability of a modern EMP are required by over 116 currently funded federal (74 NSF) grants, valued at $18M in Geoscience (64 federal grants, 47 NSF), $30M in Materials Science (30 federal grants, 14 NSF) and $19M (22 federal grants, 13 NSF) in other departments (Chemistry, Physics, Limnology, Soils, Pharmacy). Projects supported by NSF-EAR include many studies of deep-crustal processes: petrogenesis of magmatic systems, causes of explosive volcanic eruptions, conditions of granulite and of eclogite facies metamorphism, the genesis of economic deposits of metals and fossil fuels, tectonics of major shear zones, Hadean zircons, and meteoritics. Studies of near surface processes include: astrobiology, paleoclimatology (biogenic carbonates and foraminifera, speleothems), diagenesis and basin evolution, cementation in shallow fault zones, and nano-minerals. In Materials Science, projects include synthesis of new materials and advanced processing methods for materials for new electronic, magnetic and optical devices, renewable energy materials/processes, and high temperature structures. The capabilities of the UW-Madison EMP complement and are essential to the operation of WiscSIMS, an NSF-supported National Facility at UW-Madison for in situ analysis of stable isotope geochemistry. The ability of the EMP Lab at UW-Madison to build on its 47-year record of education, service and research in the public interest will be enhanced by acquisition of a modern electron microprobe. PI and Lab Director Dr. John Fournelle has for over 20 years contributed to advancing the science of electron microprobe analysis. The research that will be facilitated by a modern EMP will address many problems of societal concern, including: paleoclimate, development of natural resources (oil, gas, water, metals, strategic elements), volcanic hazards, environmental remediation, and development of new materials with desirable properties such as electronics, refractories, and ceramics. Research conducted on our current instrument has resulted in 650 publications. Learning to use the electron microprobe and to evaluate data is a key component to the educational development and maturing of students. Over the past 20 years, more than 200 graduate students in Geoscience and other STEM disciplines critical to our national economic competitiveness, including 66 women (49 in Geoscience) have used our EMP Lab for research. Geoscience faculty from smaller Wisconsin colleges bring their undergraduates to the Madison lab for their first experience running a microbeam analytical instrument.