Rindby A, Engström P, Janssens K
J Synchrotron Radiat. 1997 Jul 1;4(Pt 4):228-35. doi: 10.1107/S0909049597000344.
With the opening of the first real ;third-generation' synchrotron source in Grenoble, in fall 1994, X-ray sources of unprecedented brilliances and qualities became available to the scientific community. Different X-ray analytical techniques could now be applied on a level that was unimaginable only a decade ago. Here are some preliminary results from an experiment where different analytical techniques have been applied on a micrometer level carried out at the most powerful synchrotron microbeam currently available in the world, the microfocus beamline (BL1) at ESRF. This beamline can now provide micrometer-sized X-ray beams with a flux density up to 10(10) photons microm(-2) at an energy of 13 keV and with a bandwidth of 10(-4). In this experiment, X-ray diffraction and X-ray fluorescence have been combined in order to obtain a precise and comprehensive micro-analytical description of micrometer-sized fly ash particles. These types of particles are heavily inhomogeneous with a very irregular shape that makes them inaccessible to conventional micro-analysis. The experiment was performed in a scanning mode and two-dimensional images of different analytical information were reconstructed from the data recorded during the scan. The major features and limitations of this micro-analytical technique will be outlined and different examples on how the analytical information can be used for generating two-dimensional images of the sample will be demonstrated and discussed.
随着1994年秋季位于格勒诺布尔的首个真正意义上的“第三代”同步辐射源的启用，科学界得以使用具有前所未有的高亮度和高质量的X射线源。如今，不同的X射线分析技术能够在仅十年前还无法想象的水平上得以应用。以下是一项实验的一些初步结果，该实验在世界上目前最强大的同步辐射微束（欧洲同步辐射装置的微聚焦光束线（BL1））上进行，将不同的分析技术应用于微米级水平。这条光束线现在能够提供微米尺寸的X射线束，在13 keV能量下通量密度高达10(10) 光子·微米(-2)，带宽为10(-4)。在该实验中，X射线衍射和X射线荧光被结合起来，以便获得对微米尺寸飞灰颗粒精确而全面的微分析描述。这类颗粒严重不均匀，形状非常不规则，使得传统微分析难以对其进行研究。实验以扫描模式进行，从扫描过程中记录的数据重建出不同分析信息的二维图像。将概述这种微分析技术的主要特点和局限性，并展示和讨论关于如何将分析信息用于生成样品二维图像的不同示例。
