Critical Maintenance and Upgrades to Micro X-ray Diffractometer

西部大学地球科学研究所的布鲁克D8发现微型X射线衍射仪(CFI 2001)是安大略大学的第一台此类仪器。它的交通便利使其在加拿大独一无二。微X-射线衍射仪(微X射线衍射仪)能够在逐粒(50-500微米光束)的基础上对非均质材料中的各个相进行原位表征，以从原位的固体材料中获得晶体结构信息，而不考虑样品的大小、形状或复杂性。该仪器可用于地球科学、化学、行星科学、材料科学和工程等领域的材料表征。它仍然很有生产力，然而，它迫切需要维护和升级，否则它将停止运行。X射线管和戈贝尔反射镜的平行光学系统急需更换，而探测器则需要一个“REGA”。NSERC RTI资金被要求1)用钴源替换现有老化的铜源，以便能够收集富含铁的样品的高质量数据，以及2)用为钴配置的密封的60 mm戈贝尔镜替换现有的腐蚀的40 mm戈贝尔镜，3)升级软件并添加额外的许可证，4)注册为GADDS区域探测器。CO辐射将提高含铁样品收集的数据质量，这对这里的项目以及对许多天然和合成材料的检查都很重要。微X射线衍射仪的持续运行对弗莱明的研究至关重要，并影响了WESTERN的其他几个团队。Flemming正在进行的项目包括陨石矿物学和冲击状态的现场研究，以确定它们的起源和历史，以及调查金伯利岩指示矿物，以潜在地用于钻石勘探。联合申请人正在利用微X射线衍射仪的现场能力研究古代岩石微生物栖息的矿物学证据(Banerjee)、微生物在矿石形成中的作用(Southam)、化石的宏观保存(Tsujita)以及Haughton陨石坑(Nu德文岛)(Osinski)受影响地球材料的冲击状态(Osinski)。正在调查的技术材料包括用于燃料电池技术的纳米线(Sun)和影响核废料储存的腐蚀产品(Shoesmith和Wren)。HQP拥有广泛的专业知识。

The Bruker D8 Discover micro X-ray diffractometer (CFI 2001) in Earth Sciences at Western was the first of its kind in an Ontario University. Its accessibility makes it unique in Canada. Micro X-ray diffraction (µXRD) enables in situ characterization of individual phases in heterogeneous materials on a grain-by-grain basis (50-500 µm beam), to obtain crystal structural information from solid materials in situ, regardless of size, shape, or complexity of the sample. This instrument has application for materials characterization in Earth Sciences, Chemistry, Planetary Science, Materials Science and Engineering. It is still productive, however, it is badly in need of maintenance and upgrades or it will cease to operate. The X-ray tube and Gobel mirror parallel optics system are in critical need of replacement, and the detector requires a 'regas'. NSERC RTI funds are requested to 1) replace the existing, aging Cu source with a Co source, to enable collection of high quality data for iron-rich samples, and 2) replace the existing, corroded 40 mm Gobel mirror with a sealed 60 mm Gobel mirror configured for Co, 3) upgrade the software and add an additional license, 4) regas the GADDS area detector. Co radiation will improve the quality of data collected for iron-containing samples, which is important for projects herein and for examination of many natural and synthetic materials. Continued operation of the µXRD is critical to Flemming's research and impacts several other groups at Western. Flemming's ongoing projects include in situ study of meteorite mineralogy and shock state, to determine their origin and history, and investigation of kimberlite indicator minerals, for potential use in diamond exploration. Co-applicants are utilizing the in situ capabilities of the µXRD to study mineralogical evidence for ancient microbial inhabitation of rocks (Banerjee), the role of microbes in ore formation (Southam), macroscopic preservation of fossils (Tsujita), and shock state of impacted Earth materials at Haughton crater (Devon Island, NU) (Osinski). Technological materials under investigation include nanowires for fuel cell technology (Sun) and corrosion products affecting nuclear waste storage (Shoesmith and Wren). HQP have wide expertise.