Abstract

Potassium chloride crystals of various origin, both as received and plastically deformed, are coloured by hard or soft ionizing radiation. Based on measurements of micro-hardness and absorption spectra we point out the existence of some secondary effects of ionizing radiation resembling the effects of ordinary plastic deformation. The mechanical effect of hard ionizing radiation is found to resemble that of plastic deformation within the easy glide range and the effect of soft radiation is found to be comparable with that of plastic deformation within the strain hardening range. A mechanism responsible for the radiation-induced plastic deformation of crystals is proposed and some experimental data are discussed.

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