Investigation of the spectrally resolved TL peaks of quartz in the 70°C–220°C temperature region

• Published in: Radiation measurements Vol. 127; p. 106141
• Main Authors: Monti, A.M., Fasoli, M., Panzeri, L., Martini, M.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2019
• Subjects: Blue emission; Point defects in quartz; Thermoluminescence; UV emission; Point defects in quartz; UV emission; Blue emission; Thermoluminescence
• ISSN: 1350-4487; 1879-0925
• DOI: 10.1016/j.radmeas.2019.106141

In this work, we investigate the thermoluminescence emission in the temperature range 70 °C–220 °C for different types of quartz, both natural and synthetic. We focus on three thermoluminescence peaks, the so called 110 °C one, which we detect at around 85 °C (5 °C/s), and the two intermediate peaks detected at about 150 °C and 200 °C. The effect of thermal annealing at 500 °C and 1000 °C on the glow curves are also considered. Using interference filters and, for selected samples, a wavelength resolved detection system, we analyse the different spectral components of the peaks. It turns out that the spectral emission of the three peaks is significantly different. The 85 °C peak shows the simultaneous emission of at least two UV bands, together with a blue and a red contribution. The two peaks at higher temperature spectra are identical and involve only a single UV emission band. •Sensitivity enhancements of thermoluminescence in annealed quartz samples.•Enhancements are different depending on the emission wavelength.•The so called peak at 110 °C shows multiple, sample dependent, emission channels.•The peaks at 150 °C and 200 °C show the same main emission for every sample.