Unoccupied band structure ofNbSe2by very low-energy electron diffraction: Experiment and theory

Very low-energy electron scattering from benzene: experiment and theory

Low-energy collision studies have shown that the scattering cross section for electrons by benzene rises sharply at electron impact energies below∼ 200 meV. This was attributed in earlier work to electron attachment and formation of benzene anions with lifetimes τ 1μs. A detailed study of electron attachment to benzene is reported here that makes use of Rydberg atom techniques. The data provide...

Theory of Low-Energy Electron Diffraction

A method for calculating the intensities of diffracted waves in low energy electron diffraction by crystals is proposed. The elastic multiple scattering is fully taken into account. The cellular method of KOHN and ROSTOKER in the band theory of metals is applied to the integral equation of the scattering by two dimensional lattices, particularly by monatomic layers. The solution is expanded in ...

Unoccupied band structure of strained gadolinium

Very Low Energy Scanning Electron Microscopy

Very low energy scanning electron microscopy is introduced as a scanning version of the low energy electron microscopy, i.e. the emission electron microscopy with the sample excited by means of a parallel wave of electrons. The incident primary electrons are retarded in the cathode lens consisting of a negatively biased sample (cathode) and earthed anode. Interaction of slow electrons with soli...

Quantitative Energy-filtered Convergent Beam Electron Diffraction - Matching Theory to Experiment

Quantitative Convergent Beam Electron Diffraction (CBED) is now established as a means of accurate loworder structure factor determination. Using energy-filtered zone-axis CBED patterns it has been demonstrated that the 111 structure factor at the <110> zone-axis in Si can be measured to better than 0.1%. In order to achieve this accuracy, it is essential to have a full understanding of the zon...