Fig. 1: Formation of Kossel lines.
From: 3D atomic structure from a single X-ray free electron laser pulse
Interference of X-rays emitted by atoms in a crystal and its Bragg-reflection encodes both the phase and amplitude of the structure factor in the intensity profile of the Kossel line. The incident x-ray beam excites the atoms in the sample, which in turn emit fluorescent photons as a spherical wave. Part of this wave is going out to the detectors directly, while an other part is scattered by the neighboring atoms and interferes with the direct beam. See also the animation of the illustrated processes in Supplementary Movie 1. The figure is adapted from our earlier publication15.
