MULTI-ANGLE RECONSTRUCTION OF ENERGY DISPERSIVE X-RAY DIFFRACTION SPECTRA

X-ray diffraction is a powerful technique to provide information on the molecular structure of samples. Energy dispersive X-ray diffraction (EDXRD) spectra are classically measured at one single fixed scattering angle using a polychromatic Xray source and a spectroscopic detector. In order to remove system blurring and restore material proper information, inversion of the EDXRD spectra is required. This paper proposes to combine EDXRD spectra at different scattering angles to improve reconstruction results. To quantify the improvements, detective quantum efficiency (DQE) calculations are used, which allow to compare the performance of mono and multi-angle systems, are used. We present a reconstruction method based on multi-angle EDXRD spectra. The algorithm was tested on simulated salt (NaCl) spectra. Finally, advantages of multi-angle over mono-angle spectra are discussed.