Electron virtual inelastic scattering in the multislice scheme

Abstract

A multislice theory has been developed for including the virtual inelastic scattering in dynamical calculations of high-energy electron diffraction. The effects on elastic waves of all inelastic processes, such as single-electron excitation, plasmon excitation and phonon scattering, can be characterized by a complex correction potential. Its real part describes the virtual inelastic process and its imaginary part represents the inelastic absorption effect. This potential is directly related to the generalized dielectric response function of the crystal.

A new software package to stimulate the pattern of proposed transient chemical structures using the multislice simulation of the debye-Scherrer diffraction pattern for gold nanoparticles

“…Future work entails improving the software package introduced in this article. Some improvements include using complex electron scattering factors (25) to model inelastic scattering, simulating an imperfect initial electron beam by averaging the multislice diffraction pattern over a range of illumination angles to take into account a partially coherent beam (21).…”

A multislice theory of electron scattering in crystals including backscattering and inelastic effects

“…In the framework of multislice theory, inelastic scattering has been examined in the forward scattering approximation [8][9][10][11]. This approximation holds only if the energy of the electron beam is high enough to neglect backscattering.…”

“…Although there are advanced theories based on Bloch waves allowing us to study imperfect crystals as well (e.g. [6,7]), they are because of their reliance on periodicity in at least two spatial dimensions still inferior to the multislice method, which offers a more natural treatment of imperfections and arbitrarily complicated beam shapes.In the framework of multislice theory, inelastic scattering has been examined in the forward scattering approximation [8][9][10][11]. This approximation holds only if the energy of the electron beam is high enough to neglect backscattering.…”