Contributions of pre-exposure dose and thermal activation in pre-dose sensitizations of unfired and annealed quartz

Dependence of heating rates of thermal activation on thermal activation characteristics of 110 °C TL peak of quartz: A simulation approach

“…4). Ordinarily, this attribute seems to be at variance with some recent reports of sensitisations that decrease with heating rate of thermal activation (Kitis et al, 1993;Koul et al, 2010;Oniya et al, 2012Oniya et al, , 2015. However, for the TAT up to 500°C in Fig.…”

“…However, the pre-dose effect should not be mistaken for pure thermal sensitisation that is a result of alteration made to competitors and reservoirs by high temperature annealing (Yang and McKeever, 1990;Bøtter-Jensen et al, 1995;Larsen, 1999;Koul et al, 2010;Oniya et al, 2012Oniya et al, , 2015. A competitor could be any electron trap which is thermally disconnected in the temperature region at which the TL glow-peak at the '110°C' is excited.…”

Thermoluminescence Sensitization of Phyllite Natural Rock

“…Thermal treatments of the investigated sample at higher temperature leads to the removal of competitors and, consequently, alterations of the recombination centers at these temperatures [13,14]. Thus, high-temperature annealing creates additional recombination centers (L) and, as a result, increases the number of holes that are captured during subsequent irradiation cycles, which improves sensitivity [12,15]. Attempts were made to elucidate the tendency of mixing up these forms of sensitization [16].…”

“…Attempts were made to elucidate the tendency of mixing up these forms of sensitization [16]. The thermal sensitization method is the main form of sensitization in unheated samples, while the pre-dose method is the prominent effect of the sensitization of annealed samples [15]. Doping is also another important factor affecting TL sensitization [17].…”

Sensitization of natural rhyolite rock using high gamma doses for thermoluminescence dosimetry

“…[ 1 ] The effects of pre‐dose and annealing processes on the sensitivity of natural TL materials were thoroughly studied. [ 1–7 ] Sensitivity changes due to the pre‐dose can be related to deep‐trap filling by irradiation, while the effect of annealing can be attributed to the increase in recombination probability when residual charges from electron traps were depleted and the physical processes of luminescence were modified. [ 1 ]…”