SBIR Phase I: A Compact Micro X-Ray Absorption Spectrometer System

SBIR 第一阶段：紧凑型微型 X 射线吸收光谱仪系统

• 批准号: 0319726
• 负责人: Ning Gao
• 金额: $ 10万
• 依托单位: X-RAY OPTICAL SYSTEMS, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0319726&HistoricalAwards=false
• 关键词: SBIR; Phase; Compact; Micro; Ray

This Small Business Innovation Research (SBIR) Phase I project will determine the feasibility of a polycapillary optics-based micro-x-ray absorption spectrometer (XAS) system with a low-power microfocus x-ray source by building a laboratory prototype. The system overcomes limitations of current state-of-the-art systems in that (a) the x-ray source and sample are stationary; (b) a low power x-ray source will be implemented; (c) both XANES and EXAFS analysis are possible using the same instrument; (d) small spot microanalysis with a 15 micrometer x-ray beam is possible with advances in poly-capillary x-ray optics; and (e) the probing energy may be varied by simply choosing the appropriate off-the-shelf mono-chromator. Custom poly-capillary optics will be developed, a new x-ray source characterized, and a laboratory system will be built and the performance of the system will be analyzed to determine spot size, energy resolution, intensity, detection limits, and ease of use. A successful micro-XAS system would be used to determine chemical state information of materials as a tool in manufacturing process control systems, or as for routine screening of field samples. It overcomes the shortcomings of synchrotron based micro-XAS systems (size, availability, cost, maintenance, etc.) and makes it possible to perform chemical state analysis for monitoring manufacturing processes and routine evaluation of field samples.

该小型企业创新研究（SBIR）第一阶段项目将通过建立实验室原型来确定基于多毛细管光学的微X射线吸收光谱仪（XAS）系统的可行性，该系统具有低功率微焦点X射线源。 该系统克服了现有技术系统的局限性，因为（a）X射线源和样品是固定的;（B）将使用低功率X射线源;（c）XANES和EXAFS分析可以使用同一仪器;（d）随着多毛细管X射线光学的进步，使用15微米X射线束的小斑点微量分析是可能的;以及（e）探测能量可以通过简单地选择合适的现成单色器来改变。 将开发定制的多毛细管光学器件，表征新的X射线源，并将建立实验室系统，并分析系统的性能，以确定光斑大小，能量分辨率，强度，检测限和易用性。 一个成功的微XAS系统将被用来确定材料的化学状态信息作为一种工具，在制造过程控制系统，或作为日常筛选的现场样品。它克服了基于同步加速器的微型XAS系统的缺点（尺寸、可用性、成本、维护等）。 并且可以进行化学状态分析以监控制造过程和现场样品的常规评估。