Facility Support: The Arizona State University Secondary Ion Mass Spectrometer (SIMS) Laboratories

这笔赠款提供支持，以建立一个新的国家多用户设施的二次离子质谱（西姆斯）在亚利桑那州州立大学（ASU）。 ASU西姆斯设施目前拥有两个单收集器西姆斯，Cameca IMS 6 f和IMS 3f。 国际监测系统6 f是一种最先进的（1999年老式）小型仪器，将主要用于交钥匙、高精度轻元素（原子序数高达并包括17-Cl）同位素和元素点分析以及固体地球材料的深度剖面分析、实验运行产品和标准。 3f（1984年）将支持新技术开发和用户培训。 NSF资金将支持两名全职实验室经理（6个月）。每个）和两名研究生以及与该机制外部咨询委员会有关的参与者支助费用。 ASU西姆斯设施将向外部用户提供范围广泛的分析服务，并收取既定的用户费用，包括但不限于以下方面的点分析：火山玻璃、含水相和名义上无水相的氢含量;含水相的氢同位素比测量;地幔矿物、火山玻璃和粘土矿物的锂和硼浓度及同位素比测量;火山玻璃的碳含量和碳酸盐的同位素比测量;各种硅酸盐和氧化物矿物的氧同位素比;名义上无水相的氟含量;硫化物矿物和硅酸盐玻璃的硫同位素比测量;以及选定的重元素和同位素比直到氯。 该设施还将提供深度剖析和离子成像分析服务。 大约50%的机器时间将用于支持外部用户的分析需求。 剩余时间将用于内部研究和新型西姆斯技术开发，包括基质效应研究、扩散研究和新型标准开发（例如，标准溶液在样品薄切片上的浆料沉积）。 这一设施支持请求的主要知识价值最终将来自于未来的研究结果，这些研究结果将得到广泛利用，从而获得微观空间分辨轻元素成分和同位素分析能力。 与气候历史、了解火山灾害、地幔演化以及粘土和土壤化学有关的调查可能得到支持。 更广泛的影响包括：在亚利桑那州立大学主持学科科学家和西姆斯专家之间的合作培养;通过在执行自己的分析中获得的经验和通过将于2008年建立的正式年度冬季学校，对研究人员进行西姆斯技术的微妙之处的培训;支持两名亚利桑那州立大学研究生，他们将接受西姆斯分析和实验室操作的培训;并发展基于网络的准远程西姆斯操作能力。

This grant provides support to establish a new national multi-user facility for secondary ion mass spectrometry (SIMS) at Arizona State University (ASU). The ASU SIMS facility currently houses two single collector SIMS, a Cameca IMS 6f and IMS 3f. The IMS 6f is a state-of-the-art (vintage 1999) small-frame instrument that will be used largely for turn key, high precision light element (atomic number up to and including 17-Cl) isotopic and elemental point analyses and depth profiling of solid earth materials, experimental run products and standards. The 3f (vintage 1984) will support new technique developments and user training. NSF funds will support two full-time laboratory managers (6 mos. each) and two graduate students and participant support costs associated with an external advisory committee for the facility. The ASU SIMS facility will provide a wide range of analytical services to outside users for established user fees including but not limited to point analysis of: hydrogen contents in volcanic glasses, hydrous phases and nominally anhydrous phases; hydrogen isotope ratio measurements in hydrous phases; lithium and boron concentration and isotope ratio measurements in mantle minerals, volcanic glasses and clay minerals; carbon contents of volcanic glasses and isotope ratio measurments of carbonates; oxygen isotope ratios in a wide range of silicate and oxide minerals; flourine contents in nominally anhydrous phases; sulfur isotope ratio measurements in sulfide minerals and silicate glasses; and selected heavier elements and isotope ratios up through chlorine. The facility will also offer depth-profiling, and ion imaging analytical services. Approximately 50% of all machine time will be dedicated to supporting the analytical needs of outside users. The remaining time will be dedicated to in-house research and novel SIMS technique developments including studies of matrix effects, diffusion studies, and novel standards development (e.g., slurry deposition of standard solutions on sample thin sections). The primary intellectual merit of this request for facility support will ultimately stem from future research findings facilitated by broad access to the capability for microspatially resolved light element compositional and isotopic analysis. Investigations with relevance to climate history, understanding volcanic hazards, mantle evolution and clay and soil chemistry are likely to be supported. Broader impacts include: collaborations fostered between hosted discipline scientists and SIMS experts at ASU; the training of researchers in the subtleties of the SIMS technique both through experience gained in performing their own analyses and through a formal annual winter school to be established in 2008; support of two ASU graduate students who will be trained in SIMS analysis and laboratory operation; and development of web-based quasi-remote SIMS operational capability.