Facility Support: The Arizona State University SIMS Laboratories

该合同将继续支持亚利桑那州立大学次级离子质谱仪（SIMS）设施。亚利桑那州立大学长期以来一直是SIMS研究和开发的领导者，并以跨学科合作而闻名；更新这个国家设施使这个小组能够继续与更广泛的地球科学界分享他们的专业知识。作为该设施年度公共宣传工作的一部分，SIMS研讨会吸引了约15名参观者（主要是学生，女性占与会者的约50%），通过讲座和样品制备和分析的动手实践经验，密集地沉浸在仪器中，为期3天。在该提案的五名高级人员中，有三名是女性，两名是早期职业科学家。该设施将合成和表征相关的化学和同位素标准材料，这些材料将分发给其他SIMS实验室，以加强科学理解和合作。该设施将主要用于轻元素地球化学：分析名义上无水矿物中的H，测量一系列硅酸盐矿物和玻璃中的Li和B浓度和同位素，测量硅酸盐玻璃中的氢、氘和碳，以及矿物和火山玻璃中的F含量。然而，许多用户已经成功地获得了痕量丰度较重元素的分析，如Rb到Nb， REE, Hf， Th和u。点分析和深度剖面研究将继续得到强调。在将NanoSIMS添加到该设施后，它将成为第一个提供使用NanoSIMS进行陆地材料分析的开放设施。重新获得的资金将允许NanoSIMS在地球科学领域的新应用，例如在亚微米尺度上表征微量元素的分区和同位素浓度，以阐明地质事件的时间。随着设施科学家努力提供推进其科学所需的化学数据，新技术将基于他们与游客的互动而开发。

This award will renew support for the Arizona State University Secondary Ion Mass Spectrometer (SIMS) Facility. Arizona State University has long been a leader in SIMS research and development and is known for cross-disciplinary collaborations; renewing this national facility allows this group to continue to share their expertise with the broader Earth Science community. As part of the annual public outreach efforts of the facility, a SIMS workshop is offered that attracts ~15 visitors (dominantly students with women representing ~50% of attendees) for an intense, 3-day immersion in the instrumentation with lectures and hands-on practical experience in sample preparation and analysis. Of the five senior personnel in this proposal, three are women, and two are early-career scientists. The facility will synthesize and characterize relevant chemical and isotopic standard materials, which will be disseminated to other SIMS laboratories to enhance scientific understanding and collaboration.The facility will be used primarily for light element geochemistry: analysis of H in nominally anhydrous minerals, Li and B concentration and isotope measurements in a range of silicate minerals and glass, hydrogen, deuterium, and carbon in silicate glasses, and F contents of minerals and volcanic glass. However, many users have successfully obtained analyses for heavier elements in trace abundance, such as Rb to Nb, REE, Hf, Th, and U. Point analyses and depth-profiling studies will continue to be emphasized. In adding the NanoSIMS to the facility, it will become the first open facility offering access to NanoSIMS for the analyses of terrestrial materials. Renewed funding will allow novel applications of NanoSIMS to previously under-explored applications in the Earth Sciences, such as characterizing zoning in trace elements and isotopic concentrations at the sub-micron scale to elucidate the timing of geologic events. New techniques will be developed based on their interaction with visitors as the facility scientists strive to provide the chemical data needed to advance their science.