Thermoluminescence of Cs2 LiYCl6, Cs2LiYCl 6:Ce3+ and Cs2LiYCl6:Pr 3+ Crystals

In this paper we report on the thermoluminescence of Cs₂LiYCI₆, Cs₂LiYCl₆:Ce³⁺ and Cs₂LiYCl₆:Pr³⁺ crystals. Low-temperature glow curves and isothermal decay spectra are presented. All three crystals exhibit prominent glow peaks below 300 K. The Cs₂LiYCl₆ sample shows a major peak at 58 K in addition to a broad band between 75 K and 150 K. The glow curve of Cs₂LiYCl₆:Pr³⁺ is similar to that of Cs₂LiYCl₆ but shows additional peaks at 222 K and 277 K. The glow curve of Cs₂LiYCl₆:Ce³⁺ is dominated by a major glow peak at 214 K with minor peaks at 50 K and 88 K. Lifetimes of traps derived from isothermal decay spectra measured at the temperature maximum of selected glow peaks are of the order of tens of seconds.