Interstitial trapping during stageIErecovery of electronhyphen;irradiated pure aluminum and its dilute alloys with Ag and Mg

摘要

Recent experimental data on the influence of additional vacancies and Frenkel pairs upon the stageIErecovery of electronhyphen;irradiated Al and Alhyphen;15 ppm Ag and newly obtained results on the dilute alloy system Alhyphen; (5ndash;65) ppm Mg are analyzed in terms of the chemical reaction rate theory. The corresponding rate equations are solved numerically yielding the following quantitative results: the capture radius of a vacancy for an Al selfhyphen;interstitial,rAlv=2.1a0; the capture radii of an Mg and of an Ag atom, respectively,rMg=0.33rv,rAg=0.6rv; the electrical resistivity of a unit concentration of vacancies, rgr;v=2.0times;10minus;4OHgr; cm/unit concentration. The best fit has been obtained with a value ofEm=112 meV for the migration energy of la selfhyphen;interstitial and a frequency factor of 3times;1014secminus;1.