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Paper Details


Title
Precision radiation measurement: LiZnBO3:Ce phosphor thermoluminescent properties

Author
, Md Al-Mamun,

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Abstract

This study evaluates the thermoluminescence (TL) dosimetry potential of Ce-doped lithium zinc borate (LZB) synthesized via the solid-state reaction method. The crystalline phase integrity and functional groups were verified using XRD and FTIR, while SEM-EDS confirmed the homogenous distribution of Ce-activators. Vibrating Sample Magnetometer (VSM) was used for magnetic characterisation, which demonstrated the emergence of superparamagnetic behaviour after doping. Samples were subjected to 6 MeV electron and 6 MV X-ray irradiation (0.5–8 Gy) to evaluate dose-response linearity using clinical LINAC. Results indicate that LZB:Ce (1 %) significantly enhances dose-response linearity and sensitivity compared to the undoped host. Kinetic analysis was performed using Chen's peak-shape method, where a calculated geometric factor (0.50) confirmed general-order kinetics and significant charge carrier re-trapping. The extracted activation energies Ea ranged at ∼0.72/0.92 eV for shallow trap and ∼4.99/5.22 eV for deep trap due to defect centre, calculated by Computerized Glow Curve Deconvolution (CGCD). Despite a relative reduction in peak intensity, the material exhibited superior thermal stability and improved fading over 50 days, positioning Ce-doped LZB as a robust and technically viable candidate for dosimetry application and need long term study for more feasibility as an alternative.


Keywords

Journal or Conference Name
Applied Radiation and Isotopes

Publication Year
2026

Indexing
scopus