Kinetic equations for the concentrations of vacancies and interstitials on a lattice were solved numerically for the case of an homogeneous source of defects, up-hill diffusion (diffusional instability), and mutual vacancy-interstitial recombination. A structure with no non-uniform distributions of defects was evaluated, and its evolution into a steady state was traced. It was shown that the total number of particles increased due to the suppression of defect recombination.

V.F.Elesin, A.I.Podlivaev: Physics of Metals and Metallography, 1996, 81[5], 477-9