Diffuse Scattering by Crystals with Defects of Coulomb Displacement Field

Diffuse X-ray scattering from tiny sample volumes

“…If the host and the precipitate have identical structure and are coherently related (as in the case of early stages of precipitation in Ni-based superalloy), then significant contribution is made by the cross terms describing the interference of scattering by the host matrix and the precipitate [17,28,29]. The width of broadening around the superstructure reflections is of the order of 2p/L (L-is a characteristic size of the precipitate parallel to the deviation of the momentum transfer, DQ).…”

Neutron Scattering Studies of Heterogeneous Catalysis

“…The former contains the information of the time-averaged long-range static structure, while the latter can be due to either the structure dynamics (e.g., thermal diffuse scattering) or short-range structural ordering phenomena (e.g., short-range structure distortion, chemical or magnetic ordering, etc.). 314,315 Modern neutron total scattering experiments are usually carried out at spallation neutron sources, 313 where the high flux of high energy epithermal neutrons can be utilized, which is critical in realizing measurements of the scattering to very high momentum transfer (e.g., >30 Å −1 ). Total scattering is possible at reactor sources, but the absence of high energy neutrons limits the available Q-range (and hence the real space resolution).…”

X-Ray Dynamical Diffraction by Quasi-Monolayer Graphene

“…For structural characterization of thin films, multilayer systems, superlattices, etc. nondestructive diffraction methods are widely used [7][8][9][10][11]. The effectiveness of any diagnostic diffraction method is largely determined by the analytical expressions that provide an adequate description of the scattering pattern.…”