Development of field emission low-voltage EPMA technique to sub-micron features in geoscience

开发地球科学亚微米特征场发射低压 EPMA 技术

• 批准号: 1554269
• 负责人: John Fournelle
• 金额: $ 20.27万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-04-01 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1554269&HistoricalAwards=false
• 关键词: Development; field; emission; low; voltage

This award will support the development of new analytical techniques to optimize the application of the newest generation electron microprobes on the market today. These instruments provide chemical composition data at scales less than one micrometer, which is crucial to unraveling the history of many earth science processes. This research and development project has significant potential impacts for providing guidance to utilization of these instruments for research being performed at the University of Wisconsin, in other NSF-funded facilities, and elsewhere around the world. The project will employ a postdoctoral research student for two years.Projects supported by this new instrument include many studies of deep-crustal processes: petrogenesisof 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.

该奖项将支持开发新的分析技术，以优化当今市场上最新一代电子探针的应用。这些仪器提供的化学成分数据少于一个千分尺，这对于揭开许多地球科学过程的历史至关重要。 该研究与发展项目对在威斯康星大学，其他NSF资助的设施以及世界其他地方的研究中以及在威斯康星大学进行的研究提供了指导，对这些工具提供了重大的潜在影响。 该项目将聘请一名学士研究生两年。该新工具支持的项目包括许多深度近代过程的研究：岩浆系统的petrogenesewise，爆炸性火山爆发的原因，颗粒状的条件，eClogite的条件，eClogite相的状况气象。 对近表面过程的研究包括：天体生物学，古气候学（生物碳酸盐和有孔虫，斑speleothems），成岩作用和盆地进化，浅层断层区域的胶结和纳米矿物质。

项目成果

Solving the iron quantification problem in low-kV EPMA: An essential step toward improved analytical spatial resolution in electron probe microanalysis—Olivines

解决低电压 EPMA 中的铁定量问题：提高电子探针微量分析中的分析空间分辨率的重要一步 – 橄榄石

• DOI: 10.2138/am-2019-6865
• 发表时间: 2019
• 期刊: American Mineralogist
• 影响因子: 3.1
• 作者: Moy, Aurélien;Fournelle, John H.;von der Handt, Anette
• 通讯作者: von der Handt, Anette