Radiation dosimeter utilizing optically stimulated luminescence of BeO:Na,Tb,Gd ceramics


Altunal V. , Guckan V., Ozdemir A., Yegingil Z.

Journal of Alloys and Compounds, cilt.817, 2020 (SCI Expanded İndekslerine Giren Dergi) identifier identifier

Özet

This paper presents a systematic study of a new Optically Stimulated Luminescence (OSL) dosimeter based on BeO:Na,Tb,Gd ceramics synthesized using precipitation method. We confirm the product performing X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS) analyzes. Luminescence signals are characterized by Thermoluminescence (TL), Radio-luminescence (RL), and OSL techniques. BeO:Na,Tb,Gd ceramics have two TL peaks located at similar to 180 and 370 degrees C associated with the OSL signals. Thermal quenching energies were evaluated as 0.52 eV using the OSL signals obtained at various readout temperatures and 0.55 eV using TOSL method. The results demonstrate that the OSL signals of BeO:Na,Tb,Gd ceramics with high sensitivity, dose linearity, low-fading, reusability, and thermal stability are very encouraging and convenient for medical applications. (C) 2019 Elsevier B.V. All rights reserved.