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Component-Resolved Analysis Towards Correlation between Thermoluminescence and Optically Stimulated Luminescence in Commercial Magnesium Oxide

Niyazi Meriç
Niyazi Meriç
, 
Eren Şahiner
Eren Şahiner
, 
George Kitis
George Kitis
 e 
George S. Polymeris
George S. Polymeris
   | 31 dic 2021
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Pubblicato online: 31 dic 2021
Pagine: 222 - 231
Ricevuto: 15 gen 2019
Accettato: 31 ott 2019
DOI: https://doi.org/10.2478/geochr-2020-0011
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© 2019 Niyazi Meriç et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

CW-OSL decay curves received at room temperature, using blue light for stimulation times 128, 256, 512, 1024 and 2048 s, which coincide. This experimental feature yields the excellent reproducibility the measuring sequence.
CW-OSL decay curves received at room temperature, using blue light for stimulation times 128, 256, 512, 1024 and 2048 s, which coincide. This experimental feature yields the excellent reproducibility the measuring sequence.

Fig. 2

Shapes of the R-TL glow-curves received after bleaching with blue light for all stimulation times, ranging between 1 and 2048 s.
Shapes of the R-TL glow-curves received after bleaching with blue light for all stimulation times, ranging between 1 and 2048 s.

Fig. 3

Shapes of the LM-OSL curves received at RT and at 170°C after a pre-heat at 180°C.
Shapes of the LM-OSL curves received at RT and at 170°C after a pre-heat at 180°C.

Fig. 4

The ratio of integrated CW-OSL over the TL-lost during the various stimulation times. The TL-lost is defined as the difference between the total integrals of the un-bleached glow-curve minus the bleached TL glow-curves (a) For OSL measured at RT and (b) for OSL measured at 170°C.
The ratio of integrated CW-OSL over the TL-lost during the various stimulation times. The TL-lost is defined as the difference between the total integrals of the un-bleached glow-curve minus the bleached TL glow-curves (a) For OSL measured at RT and (b) for OSL measured at 170°C.

Fig. 5

Results of the CGCD analysis of RTL glow-curves after CWOSL at RT using Eqs. 3.5 and 3.6. The open circles represent the experimental glow-curve after CW-OSL for 1 s. The line through the experimental points is the fitting line. The continuous lines present the results of the CGCD of all R-TL glow-curves of Fig. 2 without the repeating of the experimental curves. The results for fitting parameters are listed in Table 1.
Results of the CGCD analysis of RTL glow-curves after CWOSL at RT using Eqs. 3.5 and 3.6. The open circles represent the experimental glow-curve after CW-OSL for 1 s. The line through the experimental points is the fitting line. The continuous lines present the results of the CGCD of all R-TL glow-curves of Fig. 2 without the repeating of the experimental curves. The results for fitting parameters are listed in Table 1.

Fig. 6

Analysis examples of R-TL decay curves based on the integrated signal of the main R-TL glow-peaks resulted from CGCD analysis shown individually in Fig.5. The fit was performed using Eqs. 3.1 and 3.4. The results of the fitting parameters are listed in Table 2.
Analysis examples of R-TL decay curves based on the integrated signal of the main R-TL glow-peaks resulted from CGCD analysis shown individually in Fig.5. The fit was performed using Eqs. 3.1 and 3.4. The results of the fitting parameters are listed in Table 2.

Fig. 7

Component resolved of LM-OSL curves received at RT and at 170°C after a pre-heat at 180°C, using Eqs. 3.8 and 3.9. The results of the fitting parameters are listed in Table 3.
Component resolved of LM-OSL curves received at RT and at 170°C after a pre-heat at 180°C, using Eqs. 3.8 and 3.9. The results of the fitting parameters are listed in Table 3.

The values of the trapping parameters of MgO resulting from the CGCD analysis using both general order kinetics and OTOR analytical equation.

Peak no. Tm (°C) E (eV) R b %OSL (RT) %OSL (170°C)
1 102 ± 2 0.90 ± 0.09 0.42 ± 0.07 1.40 ± 0.02 12.50 -
2 132 ± 1 0.94 ± 0.11 0.76 ± 0.17 1.97 ± 0.05 1.50 -
3 194 ± 2 0.82 ± 0.03 0.90 ± 0.06 1.55 ± 0.05 1.55 1.30
4 292 ± 4 1.13 ± 0.05 0.65 ± 0.16 1.60 ± 0.10 38.12 50.44
5 353 ± 3 1.24 ± 0.03 0.81 ± 0.04 1.90 ± 0.07 30.64 32.94
6 464 ± 2 1.45 ± 0.04 0.71 ± 0.07 1.79 ± 0.17 15.27 14.59

The fitting parameters of the RTL integrated signals as a function of the bleaching time using both general order and OTOR analytical equations. The values are the mean between of the values obtained by the two different equations. The error values provide a strong indication towards the agreement of the two different Equations used.

Peak Tm (°C) OSL T τ1 (s) % τ2 (s) %
102 RT 6.34 ± 0.71 90 75 ± 11 10
134+194 RT 5.68 ± 1.91 85 150 ± 40 15
292 RT 276 ± 15 72 2726 ± 380 28
353 RT 130 ± 31 28 2350 ± 280 72
464 RT 221 ± 25 20 2750 ± 360 80
292 170°C 98 ± 7 58 782 ± 42 42
353 170°C 85 ± 18 20 828 ± 40 80
464 170°C 55 ± 10 07 1920 ±210 93

The fitting parameters from the analysis of the LM-OSL curve using both general order and OTOR analytical equations. The values are the mean between of the values obtained by the two different equations. Error values provide a strong indication towards the agreement of the two different Equations used.

Component OSL T tm (s) τ (s) R b %
C1 RT 5.38 ± 0.45 0.036 ± 0.003 0.6 1.7 2 ± 0.15
C2 RT 15.64 ± 0.22 0.306 ± 0.003 0.7 1.8 23.3 ± 1.1
C3 RT 55.9 ± 4.1 3.9 ± 0.003 0.83 1.9 35.5 ± 4
C4 RT 248 ± 38 76.9 ± 0.003 0.93 1.8 31.9 ± 2.9
C5 RT 1151 ± 450 1667 ± 0.003 0.01 1.1 7.29 ± 0.16
C1 170°C 4.33 ± 0.7 0.024 ± 0.003 0.68 1.6 0.74 ± 0.18
C2 170°C 20.01 ± 0.40 0.506 ± 0.003 0.83 1.65 17.5 ± 1.3
C3 170°C 53 ± 0.5 3.51 ± 0.003 0.81 1.8 16.4 ± 0.5
C4 170°C 244.8 ± 9.5 74.42 ± 0.003 0.94 1.9 43.9 ± 2.1
C5 170°C 723 ± 92 653 ± 0.003 0.51 1.4 21.4 ± 2.5
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