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Abstract
The kinetics of isothermal annealing of 
-irradiation damage in strontium bromate in the range of 120–160 °C is a combination of a first order process affecting 19% of the damage fragments and a second order process, governing the behavior of the remainder. The annealing data have also been analyzed on the basis of models developed by Fletcher and Brown and by Waite.
Abstract
Rehydration of 
-irradiated anhydrous strontium bromate induces direct recovery of damage. The recovery process is unimolecular and the rehydrated salt is susceptible to thermal annealing.
Abstract
The thermal decomposition of 
-irradiated cadmium bromate was studied by dynamic thermogravimetry. The reaction order, activation energy, frequency factor and entropy of activation were computed using the Coats-Redfern method and were compared with those of the unirradiated salt. Irradiation enhances the decomposition and the effect increases with irradiation dose. The activation energy decreases on irradiation. The mechanism for the decomposition of unirradiated and irradiated cadmium bromate follows the Avrami model equation, 1-/1-
/1/3=kt, and the ratecontrolling process is a phase-boundary reaction assuming spherical symmetry.
Abstract
The thermal decomposition of 
-irradiated strontium nitrate was studied by dynamic thermogravimetry. The reaction order, activation energy, frequency factor and entropy of activation were computed by means of the Coats-Redfern method and were compared with those for the unirradiated salt. It has been suggested that NO2 formed under irradiation catalyzes the decomposition.
Abstract
The thermal decomposition of 
-irradiated magnesium bromate was studied by dynamic thermogravimetry. The reaction order, activation energy, frequency factor and entropy of activation were calculated by the Coats-Redfern equation and were compared with those of the unirradiated salt. Irradiation enhances the decomposition and the effect increases with irradiation dose. The activation energy decreases on irradiation. The mechanism for the decomposition of unirradiated and irradiated magnesium bromate follows the Avrami model equation, 1-/1-
/1/3=kt, and the rate-controlling, process is a phase boundary reaction assuming spherical symmetry.
Abstract
The kinetics of isothermal annealing of NO 2 − in γ-irradiated acetatopentamminecobalt/III/ nitrate in the range 95–115 °C is a combination of a first order process affecting 28% of the damage fragments and a second order process, governing the behaviour of the remainder. The annealing data have also been analyzed on the basis of models developed by Fletcher and Brown and by Waite.
Abstract
The thermal decomposition of 
-irradiated KClO3 was studied by dynamic thermogravimetry. The reaction order, activation energy, frequency factor and entropy of activation were computed using the Coats-Redfern, Freeman-Carroll and Horowitz-Metzger methods and were compared with those of the unirradiated salt. The decomposition increases with the irradiation dose. The energy of activation decreases on irradiation. The mechanism for the decomposition of unirradiated and irradiated KClO3 follows the Avrami model equation, 1-(1-
)1/3, and the rate controlling process is a phase boundary reaction assuming spherical symmetry.
Abstract
The role of lattice defects introduced by crushing and doping on the annealing of chemical radiation damage in strontium bromate has been investigated. Crushing of irradiated crystals produces direct recovery and also accelerates the subsequent thermal annealing. The initial damage and the susceptibility to thermal annealing are greater in the doped crystals than that in the untreated samples.
Abstract
The thermal decoposition of 
-irradiated zinc bromate has been studied by dynamic thermogravimetry. The reaction order, activation energy, frequency factor and entropy of activation were computed using the Coats-Redfern, Freeman-Carroll and Horowitz-Metzger methods and were compared with those of the unirradiated salt. Irradiation enhances the decomposition and the effect increases with the irradiation dose. The activation energy decreases on irradiation. The mechanism for the decomposition of unirradiated and irradiated zinc bromate follows the Avrami model equation, 1-(1-
)1/3=kt, and the rate-controlling process is a phase boundary reaction assuming spherical symmetry.
Abstract
The effect of irradiation on the thermal decomposition of strontium bromate has been studied by dynamic thermogravimetry. Irradiaton enhances the decomposition and decreases the energy of activation but does not change the mechanism of decomposition.
