PRESSURE-DEPENDENCE OF THE THERMOLUMINESCENCE OF X-RAY-IRRADIATED ALKALI-HALIDES

The thermoluminescence glow curves of a number of X-irradiated alkali halides have been observed at pressures up to 3.5 GPa. The changes in trap depth and in the thermoluminescence from F centers due to pressure are shown to be quite significant for NaBr, KCl, and KBr. The effect of pressure on the thermoluminescence of M centers in the high-pressure phase of KCl and KBr is also shown. Discontinuties in the trap depths and the temperature at which the thermoluminescence is at maximum intensity occur at the phase transitions of KCl and KBr.