Development of a High Resolution X-Ray Analyzer for Transition Metal Oxide Research and Education

开发用于过渡金属氧化物研究和教育的高分辨率 X 射线分析仪

• 批准号: 0216858
• 负责人: Trevor Tyson
• 金额: $ 30万
• 依托单位: New Jersey Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-15 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0216858&HistoricalAwards=false
• 关键词: Development; Resolution; Ray; Analyzer; Transition

Synchrotron based high resolution x-ray emission spectroscopy has developed into a powerful approach to probe the metal site valence and spin polarized charge density in transition metal oxide systems. In addition, it can be used to obtain light-element x-ray absorption spectra (such as carbon) with bulk sensitivity. However, this approach has been limited to specialists because of the lack of dedicated systems. With this award from the Instrumentation for Materials Research program and the Major Research Instrumentation program scientists at New Jersey Institute of Technology (NJIT) will develop a high resolution x-ray analyzer which will be stationed at the National Synchrotron Light Source in Brookhaven National Laboratory. Optimizing the instrument for thin films will makes it, in general, useful for chemical characterization of dilute systems. The instrument will be stationed the at the National Synchrotron Light Source and will be available to a broad range of users in fields as diverse of chemistry, biology, geology and physics. At all levels of the construction and research conducted with this analyzer graduate students will be involved. The instrument will be incorporated in graduate and undergraduate laboratory courses. In addition, the instrument will be utilized as a chemical analysis tool in a transition metal oxide preparation and characterization workshop for Newark area high school students conducted at the NJIT. This will serve to develop scientific literacy and to directly influence students from underrepresented groups to pursue careers in science.High-resolution x-ray emission spectroscopy based at electron storage rings at national laboratories has developed into a powerful tool to examine the chemistry of metal atoms. This tool can be applied to study the valence of metal sites in protein molecules in order to understand their function. In addition, this approach can be used to study light atom such as carbon without the need for a high vacuum system. However, its use has been limited to specialists because of the lack of dedicated systems. With this award from the Instrumentation for Materials Research program and the Major Research Instrumentation program scientists at the New Jersey Institute of Technology (NJIT) will develop a high resolution x-ray analyzer which will be stationed at the National Synchrotron Light Source (NSLS) in Brookhaven National Laboratory. Stationing the system at the NSLS will make the system available to a broad range of users in fields as diverse of chemistry, biology, geology and physics. At all levels of the construction and research conducted with this analyzer graduate students will be involved. The proposed instrument will have a broad impact through the education of graduate and undergraduate students based on its use in laboratory courses. In addition, the instrument will be utilized as a chemical analysis tool in a transition metal oxide preparation and characterization workshop for Newark area high school students conducted at the NJIT. This will serve to develop scientific literacy and to directly influence students from underrepresented groups to pursue careers in science.

基于同步辐射的高分辨X射线发射光谱已经发展成为探测过渡金属氧化物体系中金属位价态和自旋极化电荷密度的有力手段。 此外，它还可用于获得具有体积灵敏度的轻元素X射线吸收光谱（如碳）。 然而，由于缺乏专门的系统，这种方法仅限于专家。 凭借材料研究仪器计划和主要研究仪器计划的这一奖项，新泽西理工学院（NJIT）的科学家将开发一种高分辨率X射线分析仪，该分析仪将驻扎在布鲁克海文国家实验室的国家同步加速器光源。优化薄膜的仪器将使它，在一般情况下，用于稀释系统的化学表征。 该仪器将被安置在国家同步加速器光源，并将提供给化学，生物学，地质学和物理学等领域的广泛用户。研究生将参与使用该分析仪进行的各级建设和研究。 该仪器将被纳入研究生和本科生的实验室课程。此外，该仪器将被用作化学分析工具，在过渡金属氧化物制备和表征讲习班的纽瓦克地区高中学生在NJIT进行。 这将有助于培养科学素养，并直接影响来自代表性不足群体的学生从事科学事业。国家实验室电子储存环上的高分辨率X射线发射光谱学已经发展成为研究金属原子化学性质的有力工具。 该工具可用于研究蛋白质分子中金属位点的价态，以了解其功能。 此外，这种方法可以用来研究轻原子，如碳，而不需要高真空系统。 然而，由于缺乏专用系统，其使用仅限于专家。凭借材料研究仪器计划和主要研究仪器计划的这一奖项，新泽西理工学院（NJIT）的科学家将开发一种高分辨率X射线分析仪，该分析仪将驻扎在布鲁克海文国家实验室的国家同步加速器光源（NSLS）。 将该系统安装在NSLS将使该系统可供化学、生物学、地质学和物理学等领域的广泛用户使用。研究生将参与使用该分析仪进行的各级建设和研究。 拟议的仪器将通过其在实验室课程中的使用，研究生和本科生的教育产生广泛的影响。 此外，该仪器将被用作化学分析工具，在过渡金属氧化物制备和表征讲习班的纽瓦克地区高中学生在NJIT进行。 这将有助于发展科学素养，并直接影响来自代表性不足群体的学生从事科学事业。