H. Trinkaus

Microstructural features evolving in crystalline solids from diffusion-reaction kinetics of mobile components depend crucia11y on the dimension of the underlying diffusion process, which is commonly assumed to be 3-D. In metals, irradiation induced displacement cascades produce clusters of se1f-interstitials performing l-D diffusion. Changes between equiva1ent l-D diffusion lines and transversal diffusion result in diffusion reaction kinetics between l-D and 3-D. An analytica1 approach suggests a single-variable function (master curve) interpolating between the l-D and 3-D limiting cases. This is fully confirmed by kinetic Monte Carlo simulations.