Abstract
The formalism for analyzing the co-precipitation kinetics of vacancies and self interstitials into voids is extended to the nucleation of positive and negative prismatic dislocation loops in a reactor environment. Steady-state nucleation rates and incubation times are calculated for various conditions of temperature and supersaturation. Vacancy loop formation is particularly sensitive to interstitial involvement; the nucleation rate may drop by twenty orders of magnitude for a miniscule change in interstitial arrival rate. Both kinds of loops may nucleate under conditions typical of the fast breeder reactor, but interstitial loops are predicted to form much more readily. Incubation times are typically rather small (≲ 1 sec) so that steady-state nucleation is obtained rather quickly after any change in temperature or in defect concentrations.
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