Unravelling the impact of unusual heating rate, dose-response and trap parameters on the thermoluminescence of Sm3+ activated GdAl3(BO3)4 phosphors exposed to beta particle irradiation

Souadi, G.; Kaynar, Ümit H.; Sonsuz, M.; Akça-Özalp, S.; Ayvacikli, M.; Topaksu, M.; Ozmen, O.T.; Can, N.

doi:10.1016/j.radphyschem.2023.111211

Cited by 10 publications

(4 citation statements)

References 48 publications

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“…The present result of activation energy is quite comparable with the reported value of 0.59

\text{eV}

. [ 31 ] We note that the peak is considered to be of first order which corresponds to

R = 0

in OTOR model, but direct use of

R = 0

is not possible in OTOR model under QE approximation due to the singularity in Lambert‐W function, as is evident from Equation (9). For this reason we have used

R = 0.01

in our calculations.…”

Section: Resultssupporting

confidence: 89%

“…We have made an attempt to employ the present analysis on experimental curves corresponding to first and second order kinetics. At first, we consider the recently reported TL data of β ‐irradiated

\left(\text{GdAl}\right)_{3} \left(\left(\text{(BO}\right)_{3} \left.\right)\right)_{4} \left(\text{:Sm}\right)^{3 &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;plus;}

(0.5 wt%), [ 31 ] the first peak of which is likely to be of first order (

b = 1

). We have picked up the glow curve data points using the browser‐based software platform “Webplotdigitizer”.…”

Section: Resultsmentioning

confidence: 99%

“…We have picked up the glow curve data points using the browser‐based software platform “Webplotdigitizer”. [ 37 ] Using the relevant parameters and data as reported, [ 31 ] we have estimated the activation energy according to the present methodology for one pair of heating rates and the results are given in Table 5 . The present result of activation energy is quite comparable with the reported value of 0.59

\text{eV}

.…”

Section: Resultsmentioning

confidence: 99%

“…In Section 3 we have discussed the QE approximations in the context of present study followed by the results obtained from OTOR and NMTS model data. At the end of Section 3 we have applied the present method to extract activation energy on the first order experimental peak of β ‐irradiated

\left(\text{GdAl}\right)_{3} \left(\left(\text{(BO}\right)_{3} \left.\right)\right)_{4} \left(\text{:Sm}\right)^{3 &amp;#x00026;amp;amp;amp;amp;amp;amp;amp;amp;plus;}

(0.5 wt%) [ 31 ] and second order peak of γ ‐irradiated

\left(\text{K}\right)_{2} \left(\text{SrP}\right)_{2} \left(\text{O}\right)_{7} \text{:Pr}

(0.1 mole%). [ 15,32 ] A summary of the present work is given in the concluding section.…”

Section: Introductionmentioning

confidence: 99%

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A Study toward the Model Independence of Various Heating Rates Method in Thermoluminescence Glow Curve Analysis

Sarkar,

Bhattacharyya

et al. 2024

Physica Status Solidi (b)

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This study analyzes thermoluminescence (TL) glow curves simulated in general order kinetics (GOK), one trap one recombination center (OTOR), and non‐interactive multi‐trap system (NMTS) models using various heating rates (VHR) method in linear heating scheme to extract the activation energy. A theoretical analysis to determine activation energy from TL curves using OTOR and NMTS models in an iterative manner, where the TL intensity is determined by using the Lambert‐W function, is proposed with its limitations. It is established that the activation energies in OTOR and NMTS models consist of the relevant GOK term and a respective correction term. Systematic analysis is carried out to study the improvement of the accuracy of activation energy derived from OTOR and NMTS model TL curves over the GOK model calculation. A quantitative analysis of the quasi‐equilibrium (QE) approximations is carried out for choosing appropriate system parameters. The validity of QE conditions are determined by studying variations of full width at half maximum as well as area under the curve as a function of heating rate. The present method is applied on some experimental data to estimate activation energies. This investigation reveals that the activation energy derived in VHR method has negligible dependence on the underlying theoretical models, i.e., the activation energy derived from GOK model calculation is significantly accurate for experimental scenario.

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“…The present result of activation energy is quite comparable with the reported value of 0.59

\text{eV}

. [ 31 ] We note that the peak is considered to be of first order which corresponds to

R = 0

in OTOR model, but direct use of

R = 0

is not possible in OTOR model under QE approximation due to the singularity in Lambert‐W function, as is evident from Equation (9). For this reason we have used