Diffraction Fast atom diffractions Atoms Density functional theory Condensed matter physics Grazing incidence Projectiles Surface scattering Aluminum Dissipative effects Energy-loss spectrum Grazing scattering Probability Projectile distributions Protons Crystallographic directions Eikonal approximations Electrons Energy dissipation Energy loss distributions Friction Impact energy Inelastic contributions Initial value representation Interaction potentials Metal surfaces Silver Van der Waals effect Van der Waals forces Van der Waals interaction