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U.S.-France Cooperative Research: Development of Multiple- Collector SIMS Techniques for High Precision Isotopic Analyses

美法合作研究：开发用于高精度同位素分析的多收集器 SIMS 技术

基本信息

批准号：
9726772
负责人：
Kevin McKeegan
金额：
$ 2.14万
依托单位：
University of California-Los Angeles
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1998
资助国家：
美国
起止时间：
1998-06-01 至 2002-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9726772&HistoricalAwards=false
关键词：
U.S.France Cooperative Research Development

项目摘要

This two-year award provides support for US-France cooperative research aimed at developing new techniques for measuring isotopic abundance in geologic samples using the CAMECA ims 1270 ion microprobe, a new generation high sensitivity - high resolution secondary ion mass spectrometer (SIMS). The collaboration involves the research groups of Kevin McKeegan at the University of California, Los Angeles and Marc Chaussidon at the Center for Geochemical Research and Petrography in Nancy, France. The first ims 1270 is operating at UCLA as a National Science Foundation national facility. The US and French instruments are equipped with a unique multiple ion beam collector assembly. This multiple collector should allow improvements in precision and accuracy of isotopic analyses using SIMS. The US investigators bring to this collaboration expertise and experience in measuring oxygen and carbon isotopes with the new ims 1270. This is complemented by French experience with the multicollector SIMS. The groups will collaborate by cross- calibrating samples in each laboratory and sharing analytical techniques, software developments, and hardware improvements. The project will advance the use of isotope measurements of terrestrial and extraterrestrial samples and open new research areas in isotope geochemistry.

这项为期两年的奖项为美法合作研究提供支持，旨在开发新技术，用于测量地质样品中的同位素丰度新一代高灵敏度-高灵敏度离子探针CAMECA ims 1270 分辨率二次离子质谱仪（西姆斯）。合作涉及加州大学洛杉矶分校的凯文·麦基根的研究小组和 Marc Chaussidon，南希地球化学研究和岩石学中心，法国第一个ims 1270在加州大学洛杉矶分校作为国家科学基金会运作国家设施。美国和法国的仪器配备了独特的多离子光束收集器组件。这种多重收集器应该可以改进使用西姆斯进行同位素分析的精确度和准确度。美国调查人员为这次合作带来了测量方面的专业知识和经验。氧和碳同位素与新的IMS 1270。这是补充法语多接收器西姆斯的经验。这些小组将通过在每个实验室交叉校准样本和共享分析技术、软件发展和硬件改进。该项目将推进同位素的使用测量地球和地球外的样本，并开辟新的研究领域，同位素地球化学