Thermoluminescence and Optical Absorption of NaBr:S-Crystals

Autor: Baba, Mamoru, Shibata, Kiyotaka, Yutaka Kamei, Yutaka Kamei, Toshio Ikeda, Toshio Ikeda
Zdroj: Japanese Journal of Applied Physics; April 1992, Vol. 31 Issue: 4 p1085-1085, 1p
Abstrakt: Thermoluminescence and optical absorption in NaBr:S-crystals have been studied in the temperature range between 80 and 300 K. The kinetics of formation and decomposition of the so-called FHcenter, which consists of an F center associated with a neighboring sulfur ion, has been investigated in relation to thermoluminescence. It has been found that the thermoluminescence glow peak, which has an emission band with a peak at 815 nm (1.52 eV), appears at 230±3 K and is strongly concerned with recombination of the electron of the FHcenter. Such a model has been supported by observing the change in the optical absorption due to the S-centers and the FHcenters.
Databáze: Supplemental Index