Thermoluminescence and F-centre thermal annealing in heavily irradiated KCl and NaCl crystals
- 7 July 1974
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 7 (13), 2255-2262
- https://doi.org/10.1088/0022-3719/7/13/005
Abstract
It has been observed that the thermoluminescence of heavily gamma-irradiated crystals of NaCl and KCl is inhibited up to temperatures higher than those corresponding to less irradiated crystals. In NaCl it is clearly seen that the vacancy-centre aggregation processes including the formation of the colloidal band are operative before thermoluminescence occurs. During the thermal bleaching of the colloidal band F-centres are produced which in turn are annihilated by interstitials. The temperature of the maxima of the glow peak agrees well with the temperature at which the radiation-induced hardening anneals out. As in the model proposed in a previous paper (see abstr. A16630 of 1972 and A8677 of 1973), it is concluded that the thermoluminescence in irradiated alkali halides is due to the recombination of mobile interstitials with vacancy centres; at some stage in this process light is emitted.Keywords
This publication has 5 references indexed in Scilit:
- Annealing of ?-irradiation induced hardening in NaClPhilosophical Magazine, 1973
- A study of interstitial clusters in irradiated alkali halides using direct electron microscopyProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1973
- Effect of Plastic Deformation on the Thermoluminescence ofγ-Irradiated KCl CrystalsPhysical Review B, 1972
- Thermoluminescence and annealing of F-centres in KCl gamma irradiated at room temperatureJournal of Physics C: Solid State Physics, 1972
- A furnace and controller giving a constant rate of temperature rise for thermoluminescence studiesJournal of Physics E: Scientific Instruments, 1971