Thermal Annealing Reactions in Neutron-irradiated Calcium Iodate

Thermal annealing of 12 s 1 in neutron-irradiated calcium iodate showed the usual increase in the retention as observed earlier with .the products of Szilard-Chalmers reactions. A series of systems of calcium iodate with the incorporated »impurity « 1311 in the form t>I 1- was also prepared and the isotopic exchange of I03- -{I-,l2) was studied at higher temperatures (l 700-4QOOC) . The results are discussed in view of the possibility that isotopic exchange reactions may participate in the processes of the return of the recoil atoms · to the chemical form of the target