ABSRACT The present paper reports that the thermoluminescence and optical properties of Dy 3+ doped MgO nanoparticles, prepared the Solution Combustion Synthesis (SCS) method. MgO:Dy 3+ samples were characterized by powder X-ray diffraction analysis (XRD), infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and high resolution transmission electron microscope (HRTEM). The thermoluminescence (TL) glow curve was recorded by heating the sample exposed to UV-radiation, at a fixed

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... g rate 1°C sec-1. In view of this, we have prepared small size of nanoparticles with different concentration of Dy 3+ doped MgO nanoparticles. The TL glow curve of MgO:Dy 3+ , they have a simple structure with two prominent peak, one peak around 152 0 C and second peak around 250 0 C, moreover, the both peak does not shift towards to the shorter temperature, but intensity of glow peak increases with increasing dopant concentration of Dy 3+ and was observe. The activation energy of the samples was in the range for peak-I 0.46 eV to 0.42 eV and for peak-II 1.33 eV to .90 eV the order of frequency factor of the samples was found in the range for peak-I 1.01×10 17 s-1 to 0.65×10 16 s-1 and for peak-II 5.78×10 28 s-1 and 2.78×10 28 s-1 and the TL follows second order kinetics.