Effect of laser excitation on F-band absorption and thermoluminescence of X-ray irradiated KBr single crystals

Abstract

The F-band absorption and thermoluminescence (TL) of as-cleaved or quenched KBr single crystals after X-ray irradiation and later exciting with a laser beam have been studied. The F-centre concentration at room temperature is considerably reduced with laser excitation as is the TL output. These experiments indicate that a considerable concentration of F-centres in X-ray irradiated KBr crystals can be destroyed even at room temperature by laser excitation. An attempt is made to interpret these results.