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

这笔赠款支持在亚利桑那州立大学(ASU)建立一个新的国家二次离子质谱仪(SIMS)多用户设施。亚利桑那州立大学的SIMS设施目前容纳了两个单收集器SIMS，一台Cameca IMS 6f和一台IMS 3f。IMS6F是一种最先进的(1999年款)小框架仪器，将大量用于交钥匙、高精度轻元素(原子序数达到并包括17-氯)同位素和元素点分析以及固体地球材料、实验运行产品和标准的深度剖析。3f(1984年款)将支持新技术开发和用户培训。NSF基金将支持两名全职实验室经理(6个月。每人)和两名研究生以及与该设施的外部咨询委员会有关的参与者支助费用。ASU SIMS设施将以既定的使用费向外部用户提供广泛的分析服务，包括但不限于：火山玻璃、含水相和名义上无水相中的氢含量；含水相中氢同位素比的测量；地幔矿物、火山玻璃和粘土矿物中锂、硼浓度和同位素比的测量；火山玻璃中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中的氧同位素比；名义上无水相中的氟含量；硫化物矿物和硅酸盐玻璃中的硫同位素比测量；以及通过氯向上选择的较重元素和同位素比。该设施还将提供深度剖析和离子成像分析服务。大约50%的机器时间将专门用于支持外部用户的分析需求。剩余的时间将专门用于内部研究和新型SIMS技术开发，包括基质效应研究、扩散研究和新标准开发(例如，在样品薄片上浆状沉积标准溶液)。这一设施支助请求的主要智力价值最终将来自广泛获得微空间分辨轻元素成分和同位素分析能力所促进的未来研究成果。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研究可能会得到支持。更广泛的影响包括：促进托管学科科学家与亚利桑那州立大学SIMS专家之间的合作；通过获得自己进行分析的经验和将于2008年建立的正式年度冬季学校，对研究人员进行SIMS技术细微之处的培训；支持将接受SIMS分析和实验室操作培训的两名亚利桑那州立大学研究生；开发基于网络的准远程SIMS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.