Specific features of the angular and energy distributions of overfocused sputtered atoms ejected from the (001) Ni face

Peculiarities of the overfocusing of atoms sputtered from the surface of (001) Ni face are studied with the use of molecular dynamics computer simulations. The multivaluedness of the signal of overfocused atoms with respect to initial azimuthalal angle of ejection φ₀ is discovered and found to be associated with different mechanisms of atom scattering. The overfocused atoms form a separate maximum and can be separated from the focused and “proper” atoms in experiments with angle and energy resolution.