Dechanneling from Damage Clusters in Heavy Ion Irradiated Gold
The dechanneling of a well aligned beam of light particles can be initiated through interaction with a variety of crystal defects(1). Examples of such defects are displaced atoms, stacking faults, dislocations and clusters of vacancies or interstitial s. Radiation damage in metals bombarded by heavy ions is characterized by very low concentrations of free interstitials and rather high concentrations of defect clusters. In gold, the large clusters are of the vacancy type. Direct backscattering from defect clusters is generally not observable; however, dechanneling of an aligned beam can be induced by such defect clusters and has been observed for a variety of experimental conditions(2,3).
KeywordsTransverse Energy Defect Cluster Damage Distribution Free Interstitial Collision Cascade
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