Effect of cation size on the 60Co-gamma radiolytic decomposition of alkali and alkaline earth metal nitrates

Agrawal, N.; Garg, A. N.

doi:10.1016/j.radphyschem.2004.07.010

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“…A considerable amount of research results has been reported on isothermal annealing of pure alkali and alkaline earth metal nitrates, [1][2][3][4][5][6][7] however, only limited data are available on the annealing of eutectics.…”

Section: Introductionmentioning

confidence: 99%

KINETICS OF ISOTHERMAL ANNEALING OF GAMMA-IRRADIATED EUTECTIC MIXTURE OF NaNO3-KNO3

Pawar¹,

Patil²

2019

ECB

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A considerable amount of work has been reported on isothermal annealing of pure alkali and alkaline earth metal nitrates. In the present work, initially, the eutectic of NaNO3-KNO3 was prepared by mixing NaNO3 (45%) and KNO3 (55%) fused at 225 0 C and cooled naturally. The samples of a eutectic of NaNO3-KNO3 were irradiated in 60 Cogamma source. The radiation decomposition of the eutectic mixture takes place. Present work mainly deals with the study of isothermal annealing of radiation damage in a eutectic mixture of NaNO3-KNO3. This data has been analyzed by using conventional kinetics and the Waite model. Results of annealing show that a significant fraction of annealing obeys second order kinetics except in the initial short period. The energies of activation are calculated by two methods and are found to agree.

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