Abstract

The initial retention, the limiting retention after thermal annealing, and the susceptibility to radiation annealing, of thermal neutron-irradiated solid solutions of potassium chromate in potassium fluoberyllate were shown to be linear functions of the composition of the mixed crystals. Such a relation is found to be incompatible with the activated exchange model for the radiation annealing process. The susceptibilities of a number of chromates and dichromates to thermal and radiation annealing were determined and the behavior of ammonium dichromate and anhydrous lithium chromate studied in more detail. No evidence of the epithermal reaction of the fragments with ammonium ions was obtained. Some futher data on mixed crystals of chromates and sulfates are reported. (auth)

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