Angular Relationships of Secondary Ion Emission

Abstract

In order to understand the mechanism responsible for the interaction of atomic particles with solid surfaces, it is extremely important to study the angular distribution of the scattered particles and the angular dependence of the energy spectra. There have been a number of investigations into the angular distribution of scattered ions [83, 84, 122, 293, 341] and atoms [148, 159, 167] in gas targets. At the same time, the distribution of ions scattered by the surfaces of solid bodies cannot be regarded as thoroughly understood. Some authors have studied the angular distribution of the number and energy of scattered alkali ions as a function of the nature, initial energy, and incident angle of the bombarding ions, and also of the material, surface state, and temperature of the metal target bombarded. However, the results have varied widely, either because of differences in the conditions of the surface of the materials studied or inadequacies in the method employed.