Thermoluminescence in pre-heat treated NaCl crystals doped with yttrium

摘要

The effect of pre-heat treatment on the thermoluminescence (TL) of X-irradiated NaCl crystals containing yttrium has been studied in some detail. Pre-heat treatment in these crystals caused the shifting of TL glow peaks to high temperature side and an enhancement in TL intensity. These changes are attributed to the creation of large number of luminescent centers due to pre-heat treatments, influence of internal fields of these centers and shifting of energy levels of various traps responsible for TL.