The kinetics of isothermal annealing of hypobromite, bromite, and non-bromine oxidizing fragments in cobalt-60 gamma-irradiated potassium and caesium bromates has been studied in the temperature range from 120° to 180°C. The data have been considered on the theory of diffusion-controlled reaction kinetics. It is found that, for each fragment, annealing is a combination of one first order and one second order process. Various plausible chemical reactions of the fragments are envisaged. Annealing has also been studied in potassium bromate doped with Ba i+ , compressed, and crushed.