Dissociation of molecular ions by its reflection from a polycrystalline surface

The angular dependence of the intensity of fluxes of molecular and atomic nitrogen ions forcing in the reflecting of accelerated molecular nitrogen ions of energy 30 keV from the surface of polycrystalline copper is investigated. It is shown that the difference between the angular distributions of the molecular and atomic ions may be explained by the dependence of the degree of dissociation of the molecules on the scattering angle.