Abstract: Both scanning X-ray fluorescence (XRF) and transmission X-ray micro-imaging programs have been developed at the Cornell High-Energy Synchrotron Source (CHESS) F3 bending magnet beamline in recent years. With the implementation of the Xspress 3 fluorescence amplifier and fluorescence flyscans, and the development of XRF analysis software and a fluorescence CT algorithm for absorption corrections, quantitative fluorescence scans can be performed for both 2-D and 3-D imaging. For transmission X-ray imaging, with proper slitting of X-ray divergence and matching of detector coupling optics, phase-contrast information can also be used for X-ray imaging and CT of low-Z materials at the CHESS bending magnet beamline.
At the F3 beamline, XRF imaging has been used for fisheries, environment, plant science phenotype, and geochemistry studies. X-ray imaging and CT have been used for in situ study of the deformation mechanisms of nonwoven materials, operando studies of battery electrode chemical reactions, lithium dendrite development, and controls. Other relevant information and work about CHESS F3 beamline will also be provided.