ENHANCEMENT OF ATOMIC REARRANGEMENT IN TOP SURFACE-LAYERS BY LOW-ENERGY IONS

Assuming rectilinear trajectories for the projectile into a solid surf ace, a specific expression for the ''energy window'' of the driving at oms in a monolayer has been derived for different ion-target systems, in which the atomic displacements occur primarily in the surface layer , while the subsurface layer is kept intact. The results obtained here are in good agreement with Brice et al.'s numerical estimations and c lose to experimental data for ion beam assisted depositions.