Thermoluminescence characteristics of a novel Li2MoO4 phosphor: Heating rate, dose response and kinetic parameters
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Date
2022
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Abstract
Lithium molybdate (Li2MoO4) phosphor was synthesized by a gel combustion method and its thermoluminescence properties were studied with the irradiation of beta. Various Heating Rate (VHR), Initial Rise (IR), and Computerized Glow Curve Deconvolution (CGCD) methods were used to determine the kinetic parameters (activation energy E (eV), frequency factor s (s−1), and kinetic order b) of the visible glow peaks. According to the kinetic study, the TL glow curve is made up of seven separate peaks with activation energies of 1.05, 0.76, 0.40, 0.60, 0.78, 1.81 and 1.25 eV and these peaks follow general-order kinetics. The results clearly showed that undoped Li2MoO4 has a potential to be considered in dosimetric applications where high doses have to be monitored as in the case of clinical dosimetry. © 2022 Elsevier Ltd
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Keywords
Activation energy , Heating rate , Kinetic parameters , Lithium compounds , Molybdenum compounds , Phosphors , chemical compound , lithium molybdate , unclassified drug , Activation energy E , Deconvolution method , Dose response , Gel-combustion method , Glow curve deconvolution , Kinetics parameter , Lithium molybdates , Response parameters , Synthesised , Thermoluminescence properties , activation energy , Article , computerized glow curve deconvolution , controlled study , deconvolution , dose response , frequency factor , heating , high temperature , irradiation , kinetic order , kinetic parameters , low temperature , melting temperature , radiation dose , radiation dose response , thermoluminescence , Thermoluminescence