Kinetics of Vacancy-Interstitial Annihilation. II. Di-Interstitial Formation

Abstract

The equations for the kinetics of vacancy-interstitial annihilation with diinterstitial formation have been solved on an analog computer. At low temperature, or for high diinterstitial binding energy, the decomposition reaction can be neglected. Analytic approximations have been found and shown to be valid in this case. Conventional methods of activation energy determination are valid in this region for evaluating the interstitial migration energy. At high temperature, or for low binding energy, the diinterstitial concentration may be neglected and the resulting kinetics is the simple quadratic interstitial-vacancy annihilation governed by the interstitial migration energy. In the intermediate region no analytic approximations have been found and the rate constants, therefore, cannot be evaluated.