Acquisition of a powder X-ray diffractometer for geological, chemical and materials research

0744230 PariseFunds将支持为位于石溪的地科学系S X射线散射设备(INXS)购买一台X射线粉末衍射仪。该仪器将支持来自地球科学、化学、海洋科学和材料科学部门的研究人员。INXS用户群由14个研究小组组成。需要采用交叉光束光学(CBO)技术的Rigaku Ultima III仪器，提供快速用户在布拉格-布伦塔诺(B-B)和平行束(PB)光学之间的切换，允许平板或圆柱形样品分析。还将购买一台Rigaku z-平移炉，以便进行热膨胀测量。拟议的研究分为几大类；地质纳米材料、元素分析将有助于阐明污染物回收(FeS、亚铁氢化物等)和生物化学过程(骨骼和贝壳生长)。材料研究方面，将研究无定形碳酸钙(ACC)的形成和分解动力学，以加强生物材料的设计，并将在不同的温度条件下确定纳米钙钛矿材料的合成。矿物物理、高P和高T与晶体结构、流变性、强度和弹性的关系将被阐明。将评估低温地球化学、砷去除策略、合成玄武岩作为研究马里坦地球化学过程的替代物，以及评估早期有机质成岩过程中的矿物相互作用。在晶体材料研究中将使用新的仪器进行额外的分析。所要求的仪器将是一个强大的资源，为研究生提供亲身实践分析的机会。所需仪器的快速配置功能将提供独特和高级的教学机会。该乐器将被分成几门课程。INXS设施成员通过研讨会、REU、IGERT、教师研讨会和其他外展工具提供服务。

0744230PariseFunds will support acquiring an X-Ray powder diffractometer for the Department of Geoscience?s X-ray Scattering Facility (InXS) at Stony Brook. The instrument will support investigators from the Geosciences, Chemistry, Marine Sciences and Material Science departments. The InXS user base comprises 14 research groups. A Rigaku Ultima III instrument is requested with Cross Beam Optic (CBO) technology providing fast user switching between Bragg-Brentano (B-B) and parallel beam (PB) optics, allowing flat plate or cylindrical sample analysis. A Rigaku z-translation furnace will also be purchased, allowing thermal expansion measurements. Proposed studies fall into several broad categories; Geo-nano-materials, elemental analysis will help elucidate contaminant recycling (FeS, Ferrihydrite, etc) and biogechemical processes (bone and shell growth). Materials research, amorphous calcium carbonate (ACC) formation and dissociation dynamics will be studied to enhance biomaterials design and nano-perovskite material synthesis will be determined under different temperature regimes. Mineral physics, high P and T relation to crystalline structure, rheology, strength and elasticity will be elucidated. Low temperature geochemistry, arsenic removal strategies will be evaluated, synthetic basalts will be used as a proxy to study maritan geochemical processes, and mineral interactions during early organic matter diagenesis will be assessed. Additional analyses will be made using the new instrumentation in crystalline materials research. The requested instrument will represent a robust resource offering graduate students access to hands on analyses. The rapid configuration capabilities of the requested instrument will allow unique and advanced teaching opportunities. The instrument will be incorporated into several courses. InXS facility members provide service through seminars, REU, IGERT, teacher workshops, and other outreach vehicles.***