Thermoluminescence characteristics of a novel Li2MoO4 phosphor: Heating rate, dose response and kinetic parameters. (May 2022)

• Record Type: Journal Article
• Authors: Souadi, G.; Kaynar, U.H.; Oglakci, M.; Sonsuz, M.; Ayvacikli, M.; Topaksu, M.; Canimoglu, A.; Can, N.
• Is Part Of: Radiation physics and chemistry. Volume 194(2022)
• Publication Date: 2022-05
• Subjects: Li2MoO4 -- Thermoluminescence -- Kinetic parameters; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2022.110025
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: Lithium molybdate (Li2 MoO4 ) 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 Li2 MoO4 has a potential to be considered in dosimetric applications where high doses have to be monitored as in the case of clinical dosimetry. Highlights: LiMoO4 phosphor is synthesized by a combustion method. Thermoluminescence properties were conducted. Activation energies were calculated using IR, VHR and CGCD methods.