Radiation annealing behaviour of the radio-iodine recoils formed by high-energy proton irradiation of cesium chloride

Abstract

The radio-iodine atoms formed by the high-energy proton irradiation of cesium chloride crystals appear in valency forms which are affected by the induced lattice-defects. The assumption is discussed that V-type centres act as strong oxidants for the recoil atoms. A protection effect of carriers and crushing the crystals, were found to be important in determining the chemical fate of the radio-iodine. The yield of radio-iodine atoms in higher oxidation states plotted against the total proton flux may be expressed by an equation which shows the proportionality between the number of displaced atoms in the lattice and the total flux of irradiation.