MRI: Acquisition of an X-Ray Fluorescence (XRF) Vacuum Spectrometer

磁共振成像：富兰克林马歇尔学院购置一台x射线荧光（XRF）真空光谱仪这笔拨款支持富兰克林马歇尔学院购置一台新的、最先进的x射线荧光（XRF）真空光谱仪。x射线荧光（XRF）是一种对固体材料进行化学分析的分析技术。新的XRF将用于进行基础地质和化学研究，以及在这些学科领域的课程和项目中对本科生进行培训。在拥有XRF仪器的机构中受过适当训练的本科生可以对岩石和其他固体材料进行准确和精确的化学分析。地质学、无机化学、材料科学的本科课程，以及由教师指导的本科研究项目，将受益于将新的XRF纳入课程。这笔拨款支持在富兰克林马歇尔学院购置一台新的、最先进的x射线荧光（XRF）真空光谱仪。XRF仪器测量固体材料（包括岩石）的主要元素和微量元素地球化学，为了解地质应用中的物源、形成过程以及材料科学和化学应用中的物质组成和纯度提供基础。新的XRF仪器包含一个4千瓦的铑x射线管，该x射线管的设计旨在克服从阴极到辐射出口窗口周围区域的钨升华，从而在整个管寿命期间提供几乎恒定的输出，再加上与所有新的电子XRF组件接口的现代软件包。与美国国家航空航天局、加拿大航天局、阿尔伯塔大学、堪萨斯州立大学、温尼伯大学、亚的斯亚贝巴大学和其他机构的继续合作工作将受益于该仪器提供的数据质量大大提高。除了研究应用之外，新的XRF还将被用作地质学和化学本科课程的教学工具。地质系的大四学生将可以使用该仪器来完成他们在大三和大四之间的夏季野外工作中收集的岩石样本的毕业论文。此外，来自地质和化学其他课程的学生将利用XRF仪器完成独立的研究项目。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

MRI: Acquisition of an X-Ray Fluorescence (XRF) Vacuum Spectrometer at Franklin & Marshall CollegeThis grant supports the acquisition of a new, state-of-the-art X-ray fluorescence (XRF) vacuum spectrometer at Franklin & Marshall College. X-ray fluorescence (XRF) is an analytical technique that produces a chemical analysis of solid materials. The new XRF will be used to conduct basic geological and chemistry research and undergraduate student training in classes and projects in these subject areas. Suitably trained undergraduates at institutions with XRF instruments can perform accurate and precise chemical analyses of rocks and other solid materials. Undergraduate classes in geology, inorganic chemistry, materials science, and undergraduate research projects, guided by a faculty member, will benefit from incorporating the new XRF in the curriculum.This grant supports the acquisition of a new, state-of-the-art X-ray fluorescence (XRF) vacuum spectrometer at Franklin & Marshall College. XRF instruments measure the major and trace element geochemistry of solid materials, including rocks, to provide the basis for understanding provenance, processes of formation in geological applications and material composition and purity in material science and chemistry applications. The new XRF instrument contains a 4 kW rhodium x-ray tube, which has been designed to conquer the sublimation of tungsten from the cathode to the region around the radiation exit window, thus providing virtually constant output over the entire tube life, coupled with a modern software package that is interfaced with all new electrical XRF components. Continued collaborative work with NASA, Canadian Space Agency, University of Alberta, Kansas State University, University of Winnipeg, University of Addis Ababa and others, will benefit from the much-improved data quality provided by this instrument. In addition to the research applications, the new XRF will be used as a teaching tool in undergraduate classes in geology and chemistry. Geology Department seniors will have access to the instrument for their senior theses on rock samples they collect during their summer field work between junior and senior year. In addition, students from other classes in geology and chemistry will complete independent research projects utilizing the XRF instrument.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.