Auger neutralization rates of multiply charged ions near metal surfaces

Transition rates for the Auger neutralization processes of multiply charged ions on metal surfaces are calculated in closed analytical form. The core potential of a multiply charged ion is represented by a pseudopotential, which accounts for the electron screening effects and allows transition to the pure Coulomb case (fully stripped ions). The relative importance of various neutralization channels in slow-ion–surface collisions is discussed for the examples of ${\mathrm{He}}^{2+}$+Mo(100) and ${\mathrm{C}}^{3+}$+Mo(100) collisional systems.