On the identification of completely overlapped pseudo-single thermoluminescence peaks

We suggest a model of the atomic and electronic processes responsible for the so-called 110 and 325 °C thermoluminescence (TL) peaks, including predose behavior, and for the room temperature optically stimulated luminescence (OSL) of quartz. Our model is based on defects and defect processes typical of those known from many previous studies of quartz. It explains the experimental observations that the two TL peaks and OSL are correlated with respect to the effects of thermal annealing and photoexcitation after irradiation. The model indicates that the energy for the two TL peaks and OSL is all stored by the same defect pairs. These defect pairs comprise [AlO4]− and [X/M+]+ generated by a radiolytic reaction [AlO4/M+]0→[AlO4]−+M+. Here [AlO4]− is an Al impurity center substituting a Si atom, M+ is an alkali ion, [X/M+] is M+ stabilized by a defect denoted by X and [AlO4/M+]0 is an [AlO4]− center charge compensated by M+. Even though the 110 and 325 °C TL peaks and OSL arise from the same defect pairs, they should emit different luminescence because they arise through different mechanisms: the 325 °C TL peak through the migration of M+, and the OSL through the migration of holes. The 110 °C TL peak is ascribed to the electron–hole recombination at the [AlO4]− centers. According to the model, the TL at 110 and 325 °C and OSL luminesce at different wavelengths.

EPR investigation of the role of germanium centers in the production of the 110°C thermoluminescence peak in quartz

Investigation of the thermal stability of 210°C TL peak of quartz and dating the components of terrazzo from the monastery church of Tegernsee

Defect centre responsible for production of 110 ∘ C TL peak in quartz

Potential and limitations of the 210°C TL peak in quartz for retrospective dosimetry

Mechanisms of TL for production of the 230°C peak in natural sodalite

A component resolved study on the stable signal of Merck α-quartz: Tentative correlation among TL peaks, OSL components and EPR signals

Quantitative radiation dosimetry by measuring thermoluminescence of resistors in electronic personal dosimeters

Results of the present study provide strong indications towards the effective application of the 110oC Thermoluminescence (TL) peak in discriminating between different bioactive responses for the case of the 58S bioactive glass. The in vitro bioactivity of this glass in the form of powder in SBF solution was tested for various immersion times, ranging between 0 and 6 days. This TL peak is ubiquitously present in all 58S samples, for all immersion times. The intensity of the110oC TL peak was proven to be very sensitive to the different bioactive responses, indicating a strongly decreasing pattern with increasing immersion time in SBF, easily identifying thus the loss of silica. This loss is reflected to the decrease of the 110oC TL peak intensity, which appears to be fast even for the shorter immersion times. The 110oC TL glow peak intensity and sensitization could also be yielding a time scale regarding the beginning of some among the several stages included in the bioactivity sequence.

Dose dependence of the thermoluminescence (TL) peak at 200 K in AlNa containing quartz crystals

On the optical dating signal from quartz

Effects of photostimulation in natural zircon

A broad emission band at 430 nm was observed in natural CaCO3 at 300 K under N2 laser excitation. The intensity of the emission band decreases gradually under intense excitation. The decreasing curves are analyzed by using simple rate equations. The thermoluminescence (TL) peak at 620 K decreases and TL peaks below 560 K increase after exposure to the laser light. The 430 nm emission is attributed to internal transition of the trap centers which is responsible for the 620 K TL peak. It is suggested that the emission can be used for dating by detecting defects produced by natural radiation.

The effects of deep trap population on the thermoluminescence of Al 2O 3:C

Thermoluminescence dating of calcite – Alpha effectiveness and measurement protocols