- Title
- Thermoluminescence of α-Al2O3: C, Mg: kinetic analysis of the main glow peak
- Creator
- Kalita, Jitumani M
- Creator
- Chithambo, Makaiko L
- Date Issued
- 2017
- Date
- 2017
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/119844
- Identifier
- vital:34788
- Identifier
- https://doi.org/10.1016/j.jlumin.2016.10.031
- Description
- The kinetic analysis of the thermoluminescence of aluminium oxide doped with carbon and co-doped with magnesium (α-Al2O3:C,Mg) is reported. Measurements were made at 1 °C/s following beta irradiation to 1 Gy. The glow curve consists of a dominant peak at a peak-maximum Tm of 161 °C and six secondary peaks of weaker intensity at 42, 72, 193, 279, 330 and 370 °C. Kinetic analysis of the main peak, the subject of this report, was carried out using initial rise, whole glow peak, peak shape, curve fitting and variable heating rate methods. The order of kinetics of the main peak was determined as first order using various methods including the Tm–Tstop technique and the dependence of Tm on irradiation dose. The activation energy of the peak is about ~1.36 eV and the frequency factor of the order of 1014 s−1. The peak area changes with heating rate in a manner that shows that the peak is affected by thermal quenching. The activation energy of thermal quenching was evaluated as 0.99±0.08 eV. A comparison of analytical results from the main peak before and after correction for thermal quenching show that the kinetic parameters of the main peak are not that affected by thermal quenching.
- Format
- 5 pages
- Format
- Language
- English
- Relation
- Journal of Luminescence
- Relation
- Kalita, J.M. and Chithambo, M.L., 2017. Thermoluminescence of α-Al2O3: C, Mg: kinetic analysis of the main glow peak. Journal of Luminescence, 182, pp.177-182.
- Relation
- Journal of Luminescence volume 182 177 182 February 2017 0022-2313
- Rights
- Elsevier
- Rights
- Use of this resource is governed by the terms and conditions of the Science Direct Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
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RU Department of Physics and Electronics
Chithambo, Makaiko Liwiro (Distinguished Prof)
SDG 09. Industry, Innovation and Infrastructure
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