Abstract
TL of a deep trap was studied during isothermal heating in dosimetric Al2O3:C crystals irradiated by a high-dose pulsed electron beam. The TL build-up of a deep trap associated with the peak at 440 °C was found. This effect was absent for TL peaks at 305 and 565 °C. The observed TL build-up can be interpreted in terms of the kinetic model taking into account the process of thermal ionization of excited states of F-centers. The dependences of TL build-up intensity and time on the temperature, heating rate and occupancy of deep hole traps were established experimentally and confirmed by calculations.
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