EPR-TL correlation, in radiation shielding Ba(10-x)MnxLa30Si60 glasses

Abstract

The well-known phenomenon, electron paramagnetic resonance, and thermoluminescence are used to investigate paramagnetically, and thermo-luminescent behavior of the materials to advance magneto-thermo-lumina applications. However, still, there is a necessity to introduce a correlation (or) mechanism in between electron paramagnetic resonance, and thermoluminescence to understand the radiation shielding (or) electromagnetic induction shielding phenomenon within the resource like glasses, ceramics, thin film (or) polymers. In this view, the Ba(10-x)MnxLa30Si60 series of glasses are prepared. The non-crystallinity behavior and glass-forming abilities are verified by X-ray diffraction and differential thermal analysis characterization techniques. The glasses are showing non-homogeneity, de-polymerization, entropic, and de-clustering behavior with increased MnO concentration. The thermal stabilities of the glasses are reported from the DTA studies. Ultrasonic velocities were recorded to evaluate the elastic characteristics of glasses. The radiation shielding studies of glasses suggest the radiation shielding phenomenon purely a function of the MnO concentration. In this view, the results and values of mass attenuation coefficient, radiation protection efficiency, mean free path, and energy absorption build-up factor suggest more glassy thickness is required to attenuate high energy radiation. The electron paramagnetic resonance reports suggest high order of dipole-dipole super exchange interaction and rhombohedral distortion within the glasses. Which also reveals the six-state characteristic trace of the octahedral Mn2+ ions. Upon 50 kGy, γ-irradiation, the thermoluminescence properties of the glasses are reported. Trap depth parameters are calculated, which reveal the resource developed are thermoluminescent at low activation energies. Moreover, to introduce the detailed correlation between electron paramagnetic resonance, and thermoluminescence phenomenon, we have annealed the glasses under 0 to 300°C temperature and upon the 0 to 50 kGy γ - irradiation dose level. In this view, the results upon the electron paramagnetic resonance and thermoluminescence properties obtained for the glasses are highly correlative.