首页|OSL and TA-OSL properties of Li2B4O7:Al for radiation dosimetry
OSL and TA-OSL properties of Li2B4O7:Al for radiation dosimetry
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NSTL
Elsevier
? 2022 Elsevier B.V.Lithium tetraborate is one of the tissue equivalent material that has been modified with numerous dopant/codopant to improve its Thermoluminescence and Optical stimulated Luminescence properties. Lithium tetraborate doped with Aluminum is being investigated for Optical stimulated Luminescence dosimetry in this paper. Polycrystalline nano-phosphor samples were synthesized using two step solid state reaction method with optimized concentration of Aluminum equals to 2% (by wt.). Formation of the same and its morphology was confirmed using X-ray Diffractometry and Transmission Electron Microscopy. The various dosimetric properties of the obtained phosphor along with related Optical stimulated Luminescence kinetic parameters have been studied. The phosphor exhibits good linearity for gamma radiation in the range of 0.1–500 Gy with other properties such as low fading, satisfactory reusability & reproducibility and minimum detectable dose of 0.05 Gy. In this paper we have also explored the Temperature-Assisted Optical stimulated Luminescence properties of the obtained phosphor in the range of 25 ?C to 200 ?C and the optimized temperature corresponding to the maximum Optical stimulated Luminescence intensity was found to be 125 ?C with activation energy equals to 0.108 ± 0.02 eV. The studied nanophosphor has also shown linear response with dose gamma (1–200 Gy) and beta (0.05–3 Gy) at 125 ?C.
NSTL
Elsevier
