CAESAR: A Technique for Angle-Dispersive Powder Diffraction Using an Energy- Dispersive Setup and White Synchrotron Radiation

Introduction We describe a new diffraction technique for Combined Angleand Energy-dispersive Structural Analysis and Refinement (CAESAR), which collects angle-dispersive data by scanning a solid-state detector (SSD) with white synchrotron radiation. We demonstrate the feasibility by analyzing data collected on αAl2O3 at ambient conditions using the Rietveld technique, with varying schemes of data treatment. This technique is useful for high-pressure as well as general-purpose powder diffraction studies that have limited X-ray access to the sample. Several advantages are discussed.