Abstract
Positron annihilation Doppler-broadening parameters were measured on deformed silver. Deformations were carried out at liquid-nitrogen temperature and at room temperature. From annealing studies it was seen that stage-II and stage-III defects have a profound influence on the positron annihilation parameters. Measurements below room temperature of Ag annealed at room temperature revealed a strong temperature dependence of the positron annihilation parameters, which could be explained by trapping of positrons in shallow traps. The location of the annealing stage for dislocations depends upon the deformation temperature and upon the degree of deformation.
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