Temperaturabhängigkeit der Lumineszenz der Kristalle von AgCl mit Beimengung von Tl

Abstract

The temperature dependence of the luminescence of AgCl-Tl single crystals in the red region of the spectrum was measured. The curves have a characteristic beginning in the 50–70‡ K region, peaks at 70–100‡K and at 190‡K followed by a rapid fall. The dependence of the luminescence intensity on that of the exciting radiation is linear in the range measured. The experiments point to the complex character of the centre and the probability of energy transfer between the absorption and luminescence centres.