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Influence of the light illumination on thermoluminescence properties of PbWO4 |
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| Authors: | L Kostyk and S Novosad |
| Institution: | a Department of Electronics of Ivan Franko Lviv National University, vul. Tarnavskogo 107, Lviv 79017, Ukraine b Department of Physics of Ivan Franko Lviv National University, vul. Dragomanova 50, Lviv 79005, Ukraine |
| Abstract: | The thermally stimulated properties of PbWO4 in the temperature range 90–400 K have been investigated on undoped and terbium-doped crystals after X-ray irradiation at 90 K. Doping with terbium changes the concentration of shallow traps, which are responsible for retrapping free electrons and holes. Light illumination can change the distribution of the traps. The optically stimulated luminescence is observed. The influence of light illumination on the TSL curves and emission properties is studied. The possible mechanism of TSL phototransformation is discussed. |
| Keywords: | Lead tungstate Scintillator Thermoluminescence Doped centres |
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