The Diffraction of an Electron-Wave at a Single Layer of Atoms

Abstract

This paper undertakes to estimate the influence of the gradual transition between the field exterior to, and in the interior of a crystal, on the diffraction of electrons. This gradual transition is required by electrostatics. The result is, that this influence may be neglected for electrons whose energy is two hundred volts or more. One can then treat the transition as discontinuous. In the case of slower electrons it seems doubtful, if such a treatment is permissible.