Characterization of thermoluminescence kinetic parameters of beta irradiated B doped Ca5(PO4)3OH powder obtained from eggshell
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Date
2021
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Abstract
In this study, we have synthesized B doped Ca5(PO4)3OH (HAP) by a sonication chemical method. The thermoluminescence (TL) properties of the family of synthesized samples (B doped Ca5(PO4)3OH (HAP) were investigated using an IRSL-TL 565 nm filter. This gave the highest TL intensity of each phosphor after 2 Gy β-irradiation. Three TL glow peaks of B doped Ca5(PO4)3OH (HAP) are centered at around 84, 208 and 324 °C (with a heating rate of 2 °Cs-1). The trapping parameters such as activation energy (E), order of kinetics (b), frequency factor (s) were calculated by using initial rise (IR), various heating rates (VHR) and computerized glow curve deconvolution (CGCD) method. The response of TL glow curves remained constant within ±5% deviation from the initial value after 9 cycles of reuse; but only at tenth cycle the deviation goes up to 6%. © 2021 Elsevier Ltd
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Activation energy , Calcium compounds , Heating rate , Kinetic parameters , B , Chemical method , Cs$++$ , Glow peaks , Kinetics parameter , OH$+-$ , Sonication chemical method , Synthesised , Thermoluminescence properties , Trapping parameter , Article , calculation , computerized glow curve deconvolution , controlled study , deconvolution , egg shell , electron therapy , heating , kinetic parameters , pH , room temperature , thermoluminescence , various heating rate , X ray diffraction , Thermoluminescence