Development of an XRF Macro-Probe

该项目将提供部分资金，用于开发x射线荧光(XRF)宏观探测器的仪器。该设备将采用高度准直的x射线光束，对地球科学研究中遇到的天然和合成样品进行定量宏观分析。X.Y定位的计算机控制将允许在以前无法实现的空间尺度上对细粒岩石进行元素测绘。该仪器将在科罗拉多州立大学化学系的XRF实验室进行设计、组装和测试。该设备的设计目的是填补目前存在的空白。整个岩石分析需要破坏样品组构，而电子束微分析方法仅限于覆盖非常小的样品区域。潜在的地质应用包括研究化学蚀变岩石中的元素通量。

This project will provide partial funding to develop instrumentation for an x.ray fluorescence (XRF) macroprobe. The equipment will employ a highly.collimated x.ray beam for the quantitative macroscopic analysis of natural and synthetic samples encountered in earth science research. Computer control of x.y positioning will allow elemental mapping of fine.grained rocks at spatial scales previously unattainable. The instrument will be designed, assembled and tested in the XRF laboratory of the Department of Chemistry at Colorado State University. The equipment is designed to fill a gap that now exists between whole.rock analysis requiring destruction of sample fabric and electron beam microanalysis methods which are restricted to coverage of only very small sample areas. Potential geological applications include studies of elemental flux in chemically altered rocks.