Diffraction in low-energy electron scattering from DNA: Bridging gas-phase and solid-state theory

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 ...

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...

Low energy electron scattering from CH3Cl

Low-energy electron scattering from C4H9OH isomers

We present differential, integral, and momentum-transfer cross sections for elastic scattering of low-energy electrons by three butanol isomers, isobutanol, t-butanol, and 2-butanol. Our results were calculated with the Schwinger multichannel method in the static-exchange plus polarization approximation for collision energies from 1 to 50 eV. The present results are compared with previous calcu...

Gas-phase electron diffraction from laser-aligned molecules

Electron diffraction is a valuable tool to capture structural information from molecules in the gas phase. However, the information contained in the diffraction patterns is limited due to the random orientation of the molecules. Additional structural information can be retrieved if the molecules are aligned. Molecules can be impulsively aligned with femtosecond laser pulses, producing a transie...