Characterization of thermoluminescence kinetic parameters of beta irradiated B doped Ca5(PO4)3OH powder obtained from eggshell. (July 2021)

• Record Type: Journal Article
• Authors: Depci, T.; Oglakci, M.; Sezer, S.; Yücel, A.; Dogan, T.; Souadi, G.; Topaksu, M.; Can, N.
• Is Part Of: Applied radiation and isotopes. Volume 173(2021)
• Publication Date: 2021-07
• Subjects: Ca5(PO4)3OH -- B -- Sonication chemical method -- Thermoluminescence -- Kinetic parameters; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2021.109738
• Languages: English
• ISSNs: 0969-8043

Abstract

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%. Highlights: Ca5(PO4)3OH:B sample is synthesized by a sonication chemical method. Thermoluminescence properties were conducted. Activation energies were calculated using IR, Booth-Bohun-Parfianovitch and CGCD methods. The influences of concentration quenching and temperature lag on the glow curves were discussed.