A calculation of the surface erosion and vacancy injection that is produced in thin-foil specimens under high-energy electron irradiation is described. Two distinct types of damage behaviour can be predicted which depend upon the relative magnitudes of the sputtering and vacancy-enhanced displacement cross-sections. When sputtering dominates, uniform thinning from the electron exit side of the foil is predicted, but when vacancy-enhanced displacement dominates, vacancy injection is predicted.
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Medlin et al. (1991) studied this question.
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