MRI: Acquisition of an Electron Microprobe at Syracuse University: a Central New York Regional User Facility

1625835 thomas1625835这项主要研究仪器（MRI）资助购买一个电子探针（EMP），该探针配备了五个波长色散光谱仪（WDS），一个能量色散光谱仪（EDS），一个阴极发光显微镜（CL）和一个LaB6电子源，以便对地质和合成材料进行微米尺度的成分测绘。一种具有分析能力的新电子显微镜将促进固体地球科学、材料科学和考古学方面的研究和研究训练。锡拉丘兹的一个新的EMP设施将作为纽约州中部固体天然和合成材料微化学表征的区域设施，支持十多个学术机构的许多教职员工和学生的需求。这种支持与美国国家科学基金会促进科学进步和促进国家健康、繁荣和福利的使命是一致的，因为电子显微镜对于促进对地球材料起源的理解具有重要意义，特别是在这种情况下，支持研究人员对金属医疗植入物的腐蚀进行研究。因此，该仪器支持的研究立即服务于老龄化的美国人口的社会利益。该仪器还将支持培训具有最先进材料表征方法技能的下一代科学工作人员。需要电子探针来确定矿物和合成材料中微量元素微米级分布的具体研究应用将包括研究岩石和矿物中的化学平衡、扩散和反应动力学，并应用于开发新的地温计，这些地温计有望促进对挖掘出的变质岩中深部地壳矿物组合形成的压力和温度条件的理解。岩浆过程的研究，碎屑矿物相的微量元素调查以阐明物源，金属医学植入物腐蚀行为的应用研究，地质法医学和人工制品物源的考古调查。* * *

1625835ThomasThis Major Research Instrumentation (MRI) grant supports acquisition of a an electron microprobe (EMP) equipped with five wavelength dispersive spectrometers (WDS), an energy dispersive spectrometer (EDS), a cathodoluminescence (CL) microscope and a LaB6 electron source to permit micron scale compositional mapping of geologic and synthesized materials. A new electron microscope with the analytical capabilities to be included will foster research and research training in the solid Earth sciences, materials science and archaeology. A new EMP facility at Syracuse will serve as a regional facility for microchemcial characterization of solid natural and synthetic materials in central New York State, supporting the needs of many faculty and students at over a dozen academic institutions. This support is congruent with NSFs mission of promoting the progress of science and advancing the national health, prosperity and welfare given the importance of electron microscopy for advancing understanding of the genesis of Earth materials and in this case in particular, supporting investigator studies of the corrosion of metallic medical implants. Thus the research supported with this instrument immediately serves the societal interests of an aging U.S. population. The instrument will also support the training of a next generation scientific workforce with skills in state-of-the-art methods of materials characterization. Specific research applications that require an electron probe for determining the micron-scale distribution of trace element in minerals and synthesized materials will include studies of chemical equilibrium and diffusion and reaction kinetics in rocks and minerals with applications to the development of new geothermobarometers that promise to advance understanding of the pressure and temperature conditions at which mid and deep crustal mineral assemblages in exhumed metamorphic rocks formed, studies of magmatic processes, trace element investigations of detrital mineral phases to elucidate provenance, applied studies of the corrosion behavior of metallic medical implants, geoforensics, and archaeological investigations of artifact provenance. ***