Photoluminescence and thermoluminescence of Ti centers in LiF (TLD‐100)

摘要

The influence of thermal treatments (quenching and annealing) on the optical absorption and luminescence (emission and excitation) spectra of the Ti‐related 200‐nm absorption band is studied. Correlations between thermoluminescence (TL) and photoluminescence (PL) emission spectra at different temperatures support the identification of the 200‐nm Ti‐related centers as the luminescence centers of the dosimetric glow peak 5 (205 °C). The results are discussed with reference to a recently suggested TL model involving correlated trapping‐recombination centers in which thermal release of fluorine atoms in interstitial position yields impurity light emission.