Abstract
Abstract Results of thermoluminescence, optical absorption and fluorescence studies on thallium doped sulphates of cesium, rubidium and potassium are reported. The C band of Tl+ is observed in the 5.77–5.85 eV region. Fluorescent emissions from the 3P1.0 levels are observed by excitation into the C and A bands. Tl+ acts as an electron trap during γ-irradiation. The hole centres formed during irradiation recombine with Tl0 during heating to give thermoluminescence. The TL emission spectra and the fluorescence spectra are similar indicating that the process of emission is the same in both cases.
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