A mechanism controlling the production rate of freely migrating radiation-induced point defects in electron-irradiated metals
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The temperature dependence of the production rate of radiation-induced point defects is found during the analysis of experimental data on nucleation and growth of dislocation interstitial loops in aluminum irradiated by 1 MeV electrons in the temperature range of 293–423 K. With elevation of the temperature, the production rate increases. The theoretical mechanism of the process is presented, which is in full agreement with the experimental data. The model and technique are developed for estimation of the maximum length of the sequence of focused atom collisions in irradiated solids. It is estimated to be equal to five lattice constants, which matches the results of theoretical evaluations obtained earlier using the computer simulation method.
Keywordsmetals electron irradiation point defects temperature dependence
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