About the role of divacancies and diinterstitials in the theory of homogeneous nucleation of radiation-induced voids in metals

The system of stiff non-linear differential equations describing the kinetics of vacancy voids and interstitial dislocation loops nucleation and growth in pure metal (nickel) is solved with the high mobilities of divacancies and diinterstitials taken into account. The calculated time dependences of void nucleation rate are present and discussed, the dependences of other values calculated are briefly described. It is shown that the account of di-defects mobility results in significant increase of void nucleation rate. However, the rates obtained are not high enough to meet the void concentration usually observed at highest temperatures of void formation. 13 refs.; 1 fig.; 1 tab. (author)