Thermoluminescence behaviour and kinetic analysis of a novel Tb3+-Doped LaCa4O(BO3)3 phosphor: Impacts of heating rates and dose

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dc.authoridMADKHALI, Osama/0000-0001-9397-9956
dc.contributor.authorMadkhali, O.
dc.contributor.authorBulcar, K.
dc.contributor.authorBarad, A.
dc.contributor.authorZelai, T.
dc.contributor.authorSouadi, G.
dc.contributor.authorAlathlawi, Hussain J.
dc.contributor.authorKaynar, U. H.
dc.date.accessioned2025-03-20T09:51:08Z
dc.date.available2025-03-20T09:51:08Z
dc.date.issued2025
dc.departmentİzmir Bakırçay Üniversitesi
dc.description.abstractThis study employs kinetic analysis methods to comprehensively understand the thermoluminescence (TL) behaviour of Tb3+-doped LaCa4O(BO3)3 ( LACOB ), applying the Hoogenstraaten and Booth-Bohun-Parfianovitch methods, as well as the T m-T stop and Glow Curve Deconvolution (GCD) techniques. Optimal TL intensity was found at a Tb3+concentration of 2 wt%, beyond which concentration quenching occurred. The complete TL glow curve before preheating displays two peaks at approximately 70 degrees C and 286 degrees C. After preheating, only the 286 degrees C peak remains, due to its greater stability and intensity, making it the primary TL peak relevant for dosimetric applications. As the heating rate increased, the TL glow peaks shifted to higher temperatures and exhibited reduced intensity due to thermal quenching. The TL intensity exhibited superlinear behaviour at lower doses (0.5-20 Gy), followed by nearly linear behaviour at intermediate doses (30-100 Gy), and sublinear behaviour at higher doses. Anomalous fading of the TL signal was observed in LACOB:2 wt%Tb, suggesting competition with radiationless transitions. Activation energy values derived from Hoogenstraaten and Booth-Bohun-Parfianovitch methods showed close alignment, supporting the reliability of the kinetic analysis. The T m-T stop and GCD analyses with preheating identified four distinct TL glow peaks, with activation energies between 1.72 and 1.82 eV. Analysis whole glow curve revealed nine TL glow peaks overall, ranging from 1.08 to 1.82 eV, reflecting a complex trap structure with continuous energy distributions. The GCD method yielded a Figure of Merit (FOM) of 2.67 % with preheating and 2.84 without preheating, indicating a strong fit between experimental and theoretical data in both cases. The material demonstrated excellent stability and reusability, making it a strong candidate for dosimetric applications.
dc.description.sponsorshipDeanship of Graduate Studies and Scientific Research, Jazan University, Saudi Arabia [RG24-M04]
dc.description.sponsorshipThe authors gratefully acknowledge the funding of the Deanship of Graduate Studies and Scientific Research, Jazan University, Saudi Arabia, through Project Number: RG24-M04.
dc.identifier.doi10.1016/j.mssp.2024.109132
dc.identifier.issn1369-8001
dc.identifier.issn1873-4081
dc.identifier.scopus2-s2.0-85209594428
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.mssp.2024.109132
dc.identifier.urihttps://hdl.handle.net/20.500.14034/2435
dc.identifier.volume187
dc.identifier.wosWOS:001361706500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofMaterials Science in Semiconductor Processing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250319
dc.subjectThermoluminescence
dc.subjectKinetic analysis
dc.subjectGlow curve deconvolution
dc.subjectActivation energy
dc.subjectDosimetric application
dc.subjectLaCa4O(BO3)3
dc.titleThermoluminescence behaviour and kinetic analysis of a novel Tb3+-Doped LaCa4O(BO3)3 phosphor: Impacts of heating rates and dose
dc.typeArticle

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