SURFACES AND DISLOCATIONS IN ALKALI HALIDES.
Final rept. for 1 Oct 62-30 Sep 64,
MILAN UNIV (ITALY)
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Plastic deformation PD changes drastically the content of imperfections in solids the concentration of dislocation, point defects, clusters and of dispersed impurities increases up to some orders of magnitude. In alkali halides these changes affect appreciably most physical properties of the sample. This research dealt mainly with the influence of PD on the thermoluminescence TL of alkali halide single crystals the work was expanded to include the study of TL in undeformed crystals, in order to clarify the nature of the various traps. The influence of plastic deformation on dipolar complexes Sr in doped samples was studied by means of ionic thermoconductivity ITC, a method recently conceived. Some work was done also on the absorption edge and on the manganese ESR in deformed samples.