The deconvolution of thermoluminescence glow-curves using general expressions derived from the one trap-one recombination (OTOR) level model

Sadek, A.M.; Eissa, H.M.; Basha, A.M.; Carinou, E.; Askounis, Panagiotis; Kitis, G.

doi:10.1016/j.apradiso.2014.10.030

Cited by 53 publications

(24 citation statements)

References 48 publications

(65 reference statements)

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“…This, in fact, was expected since the glow-curve structure of both types of the dosimeters was identical. Moreover, the values of these kinetic parameters of peaks 2-5 are roughly the typical values reported in literatures [40,10]. Very high values of activation energy 3 eV E > and frequency factor 35 1 10 s -, which are considered out of the normal limits, were obtained for peak 5a.…”

supporting

confidence: 53%

“…) and the frequency factor 19 1 23 1 (10 s 10 s s --< < ) were reported for this peak [5][6][7][8][9][10]. However, low values of E and s were also reported for this peak.…”

Section: Introduction Harshaw Lif : Mgtimentioning

confidence: 91%

“…Moreover, unlike the GOK equation which is entirely empirical, these equations are based on the physical OTOR model. Later, these equations were developed by Sadek et al [10] in order to be employed in the deconvolution process of experimental glowcurves. These equations were utilized in the deconvolution analysis of different complex glow-curves including the both the TLD and MTS glow-curves.…”

Section: Methods Of Analysismentioning

confidence: 99%

“…These equations were utilized in the deconvolution analysis of different complex glow-curves including the both the TLD and MTS glow-curves. Sadek et al [10] concluded that all the glow-peaks of both dosimeter types could be fitted with the equation corresponding to 1 R < . In its final form and for linear heating rate, it is given by [10] (…”

Section: Methods Of Analysismentioning

confidence: 99%

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Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Sadek

Khamis

Polymeris

et al. 2016

Phys. Status Solidi C

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The kinetic parameters of the glow‐peaks of Harshaw – LiF:Mg, Ti (TLD) and Poland – LiF:Mg,Ti (MTS) dosimeters were investigated at different dose levels using the computerized glow‐curve deconvolution (CGCD) algorithm. The results showed that the glow‐curve structure and the kinetic parameters of the MTS – 6 and the TLD dosimeter are identical. In addition, the glow‐curve structure and the kinetic parameters of the MTS – N and MTS – 7 dosimeters. However, unusual low activation energy (∼1.67 eV) and frequency factor (∼1015 s–1) values were detected for peak 5 of MTS – N, and MTS – 7 at the 50 Gy dose‐level. Moreover, unlike the activation energy and the frequency factor of peak 5 of the TLD dosimeters, the activation energy and the frequency factor of peak 5 of MTS – N and MTS – 7 are substantially dependent on the absorbed dose level. The results also showed that peak 2 of the same dosimeters has also unusual low activation energy and frequency factor values. However, these values showed high stability over the different dose levels. The explanations of these unusual behaviors of peak 5 were discussed and a correlation between peak 2 and peak 5 was pointed out.

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supporting

confidence: 53%

“…) and the frequency factor 19 1 23 1 (10 s 10 s s --< < ) were reported for this peak [5][6][7][8][9][10]. However, low values of E and s were also reported for this peak.…”

Section: Introduction Harshaw Lif : Mgtimentioning

confidence: 91%

Section: Methods Of Analysismentioning

confidence: 99%

Section: Methods Of Analysismentioning

confidence: 99%

See 2 more Smart Citations

Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Sadek

Khamis

Polymeris

et al. 2016

Phys. Status Solidi C

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“…Furthermore, unlike the GOK equation, which is semianalytical, Lambert equations were yielded based on a completely analytical model. In addition, these authors, having improved the deconvolution analysis, [18] concluded that all the glow peaks of different dosimeters might be fitted with the equation related to R < 1. Eventually, for the linear heating rate, the functions (Eqs.…”

Section: Lambert W-functionmentioning

confidence: 99%

Deconvolution analysis of thermoluminescent glow curves in various commercial dosimeters using two different approaches in the framework of the one-trap, one-recombination model

Şahi̇ner¹

2017

Turk J Phys

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This paper reports kinetic analysis on the thermoluminescence (TL) glow peaks of various widespread luminescence dosimeters. A common general order kinetic (GOK) approximation and a relatively recently suggested Lambert W-function equation were used. The activation energies and the order of kinetic parameters are the main subjects of the present study. According to the results of this study, the activation energies of the main dosimetric peaks are estimated as 2.05 ± 0.11, eV, 1.23 ± 0.05 eV, and 1.11 ± 0.06 eV for LiF based dosimeters (TLD100, TLD600, TLD700), Al 2 O 3 :C (TLD500), and BeO dosimeters, respectively. Moreover, a number of other peaks were deconvolved and investigated in terms of kinetic parameters and frequency factors. Additionally, the advantages of the Lambert equation, being completely analytical, are reported and compared to those of the GOK method while deconvolving TL glow curves. The results of this study suggest that the Lambert W-function is promising in revealing the physical meaning of trap-charge and recombination mechanisms for the characterization of materials throughout physical-based sciences.

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Reappraisal of Peak Shape Method Based on Average Geometrical Symmetry Factor and Its Application to Thermoluminescence Glow Curves

Kundu¹,

Chakrabarty²,

Bhattacharyya³

et al. 2021

Physica Status Solidi (b)

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A new set of peak shape formulas at different fractional intensities is proposed to extract the activation energy from a thermoluminescence (TL) glow curve. The peak shape coefficients are formulated on the basis of the average geometrical symmetry factor which is estimated considering its dependence on the relevant TL parameters. An empirical dependence of the geometrical symmetry factor on order of kinetics and other parameters is also reported. The present method is used on TL peaks generated in general order kinetics (GOK) approximation and in one trap one recombination center (OTOR) model using a wide range of TL parameters. During the course of TL peak simulation, an alternative analytical approach to evaluate the “temperature integral” is developed. The present method seems to be useful to evaluate the activation energy for all peaks except for the heavy retrapping cases when the initial trap saturation is considerably high. A probable reason behind this limitation is also explored by examining the correspondence between the temperature average of order of kinetics and the retrapping‐to‐recombination probability. Finally, the new peak shape formulas are tried on isolated single peaks deconvoluted from composite experimental TL curves reported in the literature and the results are quite satisfactory.

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The deconvolution of thermoluminescence glow-curves using general expressions derived from the one trap-one recombination (OTOR) level model

Cited by 53 publications

References 48 publications

Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Deconvolution analysis of thermoluminescent glow curves in various commercial dosimeters using two different approaches in the framework of the one-trap, one-recombination model

Reappraisal of Peak Shape Method Based on Average Geometrical Symmetry Factor and Its Application to Thermoluminescence Glow Curves

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