Inside the powder diffraction pattern: XRD1

This lecture delves into the analysis of powder diffraction patterns, covering topics such as peak positions determined by the unit cell lattice, peak intensities influenced by atomic positions, and peak widths related to crystallite size and strain. It explains Bragg's law, structure factors, X-ray form factors, and Debye-Waller factors affecting peak intensities. The lecture also discusses peak shapes described by analytical functions and the fundamental parameters approach for separating contributions from source, instrument, and sample. It concludes with the analysis of sample texture in terms of crystallite size and strain.