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化的电子微探针（EMP），以取代一台使用了21年的旧仪器。它是威斯康星州唯一的EMP，被许多NSF资助的研究人员大量使用。没有其他技术匹配的多功能性或准确性，在原位化学分析的主要微量元素在微米级。它是非破坏性的，允许化学数据与其他形式的分析相关联。现代电磁脉冲还将具有新的能力，包括增强的成像和更强的LaB 6源，这将允许亚微米分析。现代EMP的新功能和增强的可靠性是超过116个目前资助的联邦（74个NSF）赠款所要求的，价值1800万美元的地球科学（64个联邦赠款，47个NSF），3000万美元的材料科学（30个联邦赠款，14个NSF）和1900万美元（22个联邦赠款，13个NSF）在其他部门（化学，物理，湖沼学，土壤，药学）。由NSF支持的项目包括许多深地壳过程的研究：岩浆系统的岩石成因，爆炸性火山爆发的原因，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，Hadean锆石和陨石。近地表过程的研究包括：天体生物学、古气候学（生物碳酸盐和有孔虫、洞穴沉积）、成岩作用和盆地演化、浅断层带的胶结作用和纳米矿物。在材料科学领域，项目包括新材料的合成和新电子，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。UW-Madison EMP的能力补充了WiscSIMS的运作，WiscSIMS是一个NSF支持的国家设施，用于稳定同位素地球化学的原位分析。EMP实验室在威斯康星大学麦迪逊分校的能力，建立在其47年的教育，服务和研究的公共利益的记录将通过收购现代化的电子微探针增强。PI和实验室主任John Fournelle博士为推进电子探针分析科学做出了20多年的贡献。现代EMP将促进研究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，战略元素）的开发，火山灾害，环境修复以及具有理想性能的新材料的开发，如电子，耐火材料和陶瓷。对我们目前的文书进行的研究已产生650份出版物。学会使用电子探针和评估数据是教育发展和学生成熟的关键组成部分。在过去的20年里，超过200名地球科学和其他STEM学科的研究生对我们的国家经济竞争力至关重要，其中包括66名女性（49名地球科学）使用我们的EMP实验室进行研究。来自较小的威斯康星州大学的地球科学教师将他们的本科生带到麦迪逊实验室，进行他们第一次运行微束分析仪器的经验。

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.