Abstract
Recent mutual interest between solid state and energetic ion physics is discussed. This interest has been stimulated largely by the discovery of channeling and blocking effects for energetic particles in crystalline targets. The following specific applications of such effects to the solid state are considered: 1. An analogy between interstitial diffusion and the channeling of low energy ions. 2. The radiation-enhancement of solid state diffusion, particularly of interstitials. 3. The use of blocking and channeling effects to determine the locations of trace impurities in a crystal. Also of current interest are the properties of crystals into which an ion beam has been driven. Under suitable experimental conditions, such ion-injected crystals retain the desirable properties of nearly-perfect crystals. Unlike conventional materials, however, these ion-injected materials may be heavily supersaturated with a desired dopant; furthermore, experience with p-n junctions made by ion injection suggests that high chemical purity can be retained in such materials.
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