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Component Resolved Equivalent Dose Estimation Using TL Glow Curves of Travertine Samples from Anatolia, Turkey

Eren Şahiner
Eren Şahiner
, 
George S. Polymeris
George S. Polymeris
, 
M. Zeynel Öztürk
M. Zeynel Öztürk
, 
Y. Kağan Kadioğlu
Y. Kağan Kadioğlu
 e 
Niyazi Meriç
Niyazi Meriç
   | 31 dic 2021
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Pubblicato online: 31 dic 2021
Pagine: 171 - 178
Ricevuto: 19 gen 2019
Accettato: 12 lug 2019
DOI: https://doi.org/10.1515/geochr-2015-0116
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© 2019 Eren Şahiner et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1

Representative natural OSL and thermally assisted OSL (TA – OSL) signals corresponding to the CaCO3 sample with code SB3. These signals are not useful for dating applications.
Representative natural OSL and thermally assisted OSL (TA – OSL) signals corresponding to the CaCO3 sample with code SB3. These signals are not useful for dating applications.

Fig. 2

Typical results of the MAAD plateau method applied for sample SB1. Plot (a) presents a NTL glow curve (as an average of three independently measured glow curves), plot (b) presents the representative Si curves for a selection of additive doses according to equation (2) while plot (c) presents an ED plateau versus glow curve temperature according to equation (1). Error bars correspond to 1σ.
Typical results of the MAAD plateau method applied for sample SB1. Plot (a) presents a NTL glow curve (as an average of three independently measured glow curves), plot (b) presents the representative Si curves for a selection of additive doses according to equation (2) while plot (c) presents an ED plateau versus glow curve temperature according to equation (1). Error bars correspond to 1σ.

Fig. 3

Representative deconvolution analysis of a TL glow curve corresponding to the sample SB1, after a dose of 450 Gy (open data points). Six different TL glow peaks and a black body radiation curve (BGK) were used in order to fit the experimental glow curve. Each TL glow peak is presented in solid line and is denoted as Pi. Orange solid line indicates the fitting curve. Table 2 indicates the activation energies of the TL peaks.
Representative deconvolution analysis of a TL glow curve corresponding to the sample SB1, after a dose of 450 Gy (open data points). Six different TL glow peaks and a black body radiation curve (BGK) were used in order to fit the experimental glow curve. Each TL glow peak is presented in solid line and is denoted as Pi. Orange solid line indicates the fitting curve. Table 2 indicates the activation energies of the TL peaks.

Fig. 4

Representative additive dose growth curve in terms of the integrated intensity of TL glow peak P4 after deconvolution, for the sample with code SB1. The arrow indicates the ED value.
Representative additive dose growth curve in terms of the integrated intensity of TL glow peak P4 after deconvolution, for the sample with code SB1. The arrow indicates the ED value.

Data related to the ED estimation for all four samples.

A/A Sample Codes Plateau ΔT (°C) Plateau ED (Gy) P4 ED (Gy) P5 ED (Gy) P6 ED (Gy)
1 SB1 270–370 1258 ± 155 1578 ± 171 1312 ± 137 1422 ± 158
2 SB2 280–385 1458 ± 166 1682 ± 149 1489 ± 155 1358 ± 185
3 SB3 260–380 1077 ± 91 1236 ± 133 1113 ± 107 1193 ± 128
4 SB4 270–380 781 ± 70 932 ± 98 812 ± 86 850 ± 88

Deconvolution results for fitting parameters of all four samples.

A/A Sample Codes P4 Tmax (°C) P4 R P4 E (eV) P5 Tmax (°C) P5 R P5 E (eV) P6 Tmax (°C) P6 R P6 E (eV)
1 SB1 328 ± 4 0.06 1.34 ± 0.12 399 ± 11 0.09 1.59 ± 0.18 453 ± 22 0.01 1.81 ± 0.21
2 SB2 326 ± 5 0.04 1.37 ± 0.11 402 ± 10 0.05 1.63 ± 0.17 457 ± 21 0.01 1.86 ± 0.19
3 SB3 328 ± 3 0.09 1.34 ± 0.13 404 ± 13 0.07 1.64 ± 0.16 463 ± 22 0.02 1.88 ± 0.24
4 SB4 327 ± 5 0.05 1.41 ± 0.12 402 ± 13 0.05 1.61 ± 0.17 459 ± 24 0.01 1.79 ± 0.20

Content of main elements. The detection limit for the (%) concentration is 0.01%. BDL=Below Detection Limits.

A/A Sample Codes Ca content (%) C content (%) O2 content (%) K content (%) Na content (%) Fe content (%) Mg content (%) Mn content (%) Si content (%) Al content (%) Ti content (%) Cl content (%)
1 SB1 40.15 37.44 20.53 BDL 0.05 0.51 0.26 0.03 0.13 0.76 0.09 BDL
2 SB2 37.41 38.84 21.23 BDL 0.07 0.41 0.18 BDL 0.32 0.71 0.71 0.06
3 SB3 39.05 38.15 20.28 BDL BDL 0.61 0.77 0.07 0.21 0.33 0.51 0.03
4 SB4 38.79 37.05 22.07 BDL 0.03 0.53 0.58 0.08 0.14 0.19 0.48 0.05
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