Thermoluminescence of secondary peak on synthetic quartz: Influence of annealing time on kinetic parameters and some dosimetric features

• Published in: Journal of luminescence Vol. 233; p. 117918
• Main Authors: Dawam, R.R., Masok, F.B., Fierkwap, S.B.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2021
• Subjects: Dosimetric properties; Duration of annealing; Synthetic quartz; Thermal quenching; Thermoluminescence; Duration of annealing; Dosimetric properties; Thermal quenching; Synthetic quartz; Thermoluminescence
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2021.117918

This work presents the thermoluminescence of synthetic quartz annealed at 900 °C for 10 and 60 min. The glow curves were measured at 1 °C s−1 after beta irradiation to 10 Gy. The sample annealed for 60 min consists of a prominent peak at 78 °C and secondary peaks of lower intensity at 130 and 180 °C. In comparison, the sample annealed for 10 min revealed the main peak at 74 °C and lower intensity peaks at 132 and 174 °C. For convenience, the main peak of samples annealed for 10 min and 60 min was referred to as P1 whereas the lower intensity peaks were referred to as P2 and P3. The kinetic and dosimetric analysis was carried out on P3 the subject of this study. Order of kinetics of peak P3 was determined to be general order using various methods for the two samples. The activation energy was evaluated as an average of 1.28 ± 0.05 eV for the sample annealed for 60 min. However, when the sample was annealed for 10 min, the activation energy increases averaging 1.54 ± 0.04 eV. The activation energies of thermal quenching of samples annealed for 10 and 60 min were found to be 0.78 ± 0.06 eV and 0.62 ± 0.02 eV respectively. This suggests that recombination process depends on the duration of annealing. The dose response ranging from 10 to 200 Gy was found to be superlinear for the sample annealed for 10 min, and sublinear for the sample annealed for 60 min. •Influence of duration of annealing on kinetic parameters and some dosimetric features on synthetic quartz is reported.•The samples were annealed at 900 °C for 10 and 60 min.•Kinetic analysis of the secondary peak shows that the activation energy decreases with duration of annealing.•The activation energy of thermal quenching also decreases with duration of annealing.•The dose response is superlinear for the sample annealed for 10 min and sublinear for the sample annealed for 60 min.