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

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 南希地球化学研究和岩石学中心的马克·肖西登， 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 测量陆地和外星样本并开辟新的研究领域 同位素地球化学

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.