Facility Support: The Arizona State University SIMS Laboratories

该合同将部分资助亚利桑那州立大学次级离子质谱（SIMS）实验室作为NSF国家多用户设施。实验室通过促进微量元素和同位素比率的SIMS微量分析来支持研究人员。通常要求的分析示例包括：1)测量火山爆发回收的晶体中捕获的玻璃熔融包裹体的H2O， CO2和微量元素含量，2)粘土矿物中硼和锂的数量和同位素比率，3)对低温和高温环境中矿物进行广泛的微量元素微量分析，以及4)对实验衍生样品进行深度剖面分析以确定微量元素扩散系数。这种支持还采取培训访客使用SIMS技术和开发新的分析方案的形式，以响应研究人员的需求。参观者包括本科生和研究生，博士后研究人员和教师从广泛的地球科学机构。该设施支持奖将使亚利桑那州立大学的二次离子质谱仪器、亚利桑那州立大学人员的广泛专业知识和在亚利桑那州立大学开发的新型分析技术可供来自美国各地的研究人员使用，包括高温和低温地球化学、地球生物学、考古学、气候科学和太阳系早期历史。

This award will partially fund the ASU secondary ion mass spectrometry (SIMS) laboratories as an NSF national, multi-user facility. The laboratories support researchers by facilitating SIMS microanalyses for trace elements and isotope ratios. Examples of commonly requested analyses include: 1) the measurement of H2O, CO2, and trace element contents of glassy melt inclusions trapped in crystals recovered from explosive volcanic eruptions, 2) boron and lithium amounts and isotopic ratios in clay minerals, 3) a wide range of trace element microanalyses on minerals from low- and high-temperature environments, and 4) depth profile analyses of experimentally-derived samples to determine trace element diffusion coefficients. This support also takes the form of training visitors to use the SIMS technique and development of new analytical protocols in response to the needs of researchers. Visitors include undergraduate and graduate students, post-doctoral researchers and faculty from a wide range of Earth Science institutions.This facility support award will make the Arizona State University secondary ion mass spectrometry instrumentation, the extensive expertise of the ASU personnel and novel analytical techniques developed at ASU available to researchers from across the US in areas including high and low-temperature geochemistry, geobiology, archaeology, climate science, and the early history of the solar system.