Thermoluminescence of anion-deficient aluminum oxide single crystals after high-dose irradiation by nanosecond electron pulses

Parametric study of plasma-mediated thermoluminescence produced by Al2O3sub-micron powders

“…This is followed by a decrease in the interval of 973-1173 K, and again by a general increase in the intensity in the interval 1173-1273 K. The uniformity of the resulting curves for all gases indicates that, despite the oscillating behavior, we are not dealing with some random processes. Similar behavior was observed for a step-annealing experiment on Al 2 O 3 crystals grown under reducing conditions [29]. The peak corresponding to the MDT increased in the temperature range 780-900 K only to exhibit a drop in intensity in the interval 900-1000 K followed by signal recovery in the interval 1000-1200 K. The authors attributed these regions to deep electron, hole and electron traps, respectively.…”

“…In compliance with these results, we therefore suggest that the decrease/increase of intensity in the intervals 873-973, 973-1173 and 1173-1273 K correspond to the depletion of the deep electron, hole and electron traps, respectively. The minor discrepancy between the particular temperature ranges can be ascribed to the use of reducing conditions for the manufacture of Al 2 O 3 in [29].…”