OSCILLATORY ANNEALING BEHAVIOR OF 3 NEUTRON-IRRADIATED INORGANIC CRYSTALLINE COMPOUNDS

In the present work a detailed form of the isothermal annealing behaviour of two cobalt(III) complexes (cis- and trans-[Co(en)2Cl2]NO3) and (NH4)2CrO4 irradiated in the crystalline state by neutrons is presented. The kinetic analysis based on the experimentally obtained curves was done by a semiempirical equation used before in the investigation of oscillating reactions. In the case of chromates the oscillatory kinetics was directly confirmed by the consistent results obtained from two independent and commonly used radioanalytical techniques. Similarities between the observed kinetics and literature reports, concerning similarly treated crystalline lattices, suggest that the driving force is a common property of the defect-containing lattices. Oscillating reactions such as the observed. are predicted by the theory of irreversible processes.