Abstract
ABSTRACTPure aluminum oxide is synthesized by solution combustion technique. Pellets of Al2O3 are irradiated with 100 MeV Si7+ ions in the fluence range from to ions cm−2. Thermoluminescence (TL) of Si7+-ion-irradiated aluminum oxide exhibits a strong and broad TL glow with a peak at 537 K along with a weak shoulder at 622 K. These glow peaks are ascribed to the formation of luminescence/trap centers in ion tracks created by Si7+ ions. The TL intensity is found to increase with Si7+ ion fluence up to ions cm−2 and decreases beyond this fluence. TL glow curve structure and its response of Si7+ ion-irradiated Al2O3 were explained by using track interaction model. TL kinetic parameters are evaluated by computerized glow curve deconvolution and Chen's method. Activation energy and frequency factor of the prominent TL peak are found to be 1.21 eV and s−1, respectively.
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