نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده فیزیک، دانشگاه کاشان، کاشان، ایران
2 -دانشکده فیزیک، دانشگاه کاشان، کاشان، ایران - پژوهشکدة علوم و فناوری نانو، دانشگاه کاشان، کاشان
کلیدواژهها
عنوان مقاله English
نویسندگان English
This study investigates the dosimetric properties of alumina-based phosphor doped with dispersium impurity, evaluating its potential as highly sensitive thermoluminescent material for high-dose applications. All samples were synthesized using the sol-gel method. The highest sensitivity to gamma radiation from a 60Co source was observed in the sample with 0.5 mol% dispersium doping. The structural and morphological properties of the particles were examined using X-ray diffraction (XRD) and scanning electron microscopy (SEM), while elemental analysis of the α-alumina sample was analyzed using energy-dispersive X-ray spectroscopy (EDS). The kinetic parameters of the thermoluminescence (TL) glow curve were extracted through computer-based curve fitting. The TL glow curve exhibited two overlapping peaks at approximately 394 K and 449 K. Additional analyses of the glow curve characteristics, fading characteristics, and dose-response linearity demonstrated the strong potential of this nanophosphor as a high-sensitivity TL dosimeter suitable for high-dose radiation measurements.
کلیدواژهها English
