Fission fragment iodine jlodine isotopes /Separation of iodine / Thermal annealing / Uranium oxide
SummaiyThe oxidation states of isotopes of iodine when they recoil as fission fragments from a thin film of iiradiated uranium oxide (U3O,) into potassium sulphate have been investigated. After irradiation the samples wäre dissolved in excess of iodate and iodide carrier and the radioactivity of the two carriers analysed. It was found that a high fraction of the iodine in potassium sulphate exchanged with the iodate form. The fraction varied for different isotopes and also with the time and temperature of annealing of the potassium sulphate after irradiation. The electron spin resonance spectra of potassium sulphates inadiated by fission fragments in a reactor have been studied. The annealing behaviour is interpreted quantitatively as reactions between the fission fragment iodine and the radicals formed in the sulphate during the irradiation. Estimations are made for the reaction rates and activation energies involved in the annealing processes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.