Browsing by Author "Kavgaci, M."

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Analysis of Structural, Optical, Mechanical Properties and Evaluation of Radiation Shielding Effectiveness of Strontium Borate Glasses Doped With Zno Nanoparticles
(Elsevier Sci Ltd, 2024) Kavgaci, M.; Yaykali, H.; Eskalen, H.; Perisanoglu, U.; Yilmaz, R.; Tune, H.; Perisanoglu, E. Kavaz
This research meticulously explores the synthesis, structural, thermal and optical characterization of zinc oxide nanoparticles (NPs) infused strontium borate glasses (termed SZ glasses) and their applicability as radiation shielding. The glasses have been produced using the melt quenching process in the composition series of (60-x) B2O3: xZnO: 10SrO: 10Na2O: 10CaO: 10BaO, where x varied from 0 to 20 % mol. In order to dope ZnO into glasses, its structural and morphological characteristics were investigated after it was synthesized by solution combustion method. It was found that the inclusion of ZnO significantly impacted the glasses' density, molar volume, hardness, yield stress, and thermal stability. The optical properties of the produced glasses, such as transmittance, reflection, transparency, opacity and band gap energies, were examined and the effect of ZnO on the optical properties of the glasses was investigated. Crucially, the SZ glasses exhibited notable efficiency in shielding against gamma photons and fast neutrons. This is evidenced by the favourable change in the mass attenuation coefficients with increasing ZnO concentration. Parameters like the half-value layer, effective atomic number, and energy absorption buildup factors were calculated to gauge the radiation attenuation proficiency of the SZ glasses, demonstrating their potential utility in radiation protection. In conclusion, the developed SZ glasses display advantageous structural, thermal, and optical qualities, along with robust shielding capabilities against gamma photons and fast neutrons. This study contributes significant knowledge to the field of novel glass materials, paving the way for their application in various industrial and medical contexts requiring radiation shielding.
An Experimental Analysis of the Effects of Sro on the Mechanical, Structural, Optical, and Nuclear Radiation Shielding Properties of Barium Borate Glasses
(Elsevier, 2024) Kavgaci, M.; Yaykasli, H.; Eskalen, H.; Perisanog, E. Kavaz; Kalecik, S.; Yilmaz, R.; Tunc, H.
The objective of this work is to offer a better understanding of the unique structural, mechanical, optical and nuclear radiation attenuation properties exhibited by newly produced (B2O3)(70-x)(SrO)x(Na2O)10)(BaO)10(- CaO)10 glasses, where x = 0, 5, 10, 15, 20 %. For this purpose, after The XRD measurements confirmed the noncrystalline nature of the glass structures, it was noted that the substitution of B2O3 with SrO increased the density of SrO glasses in the range of 2.915 g/cm3- 3.304 g/cm3. It was also found that the addition of SrO to barium borate glasses improved their mechanical properties such as Vickers microhardness and yield stress, and the elastic modulus of the glasses decreased. The DSC curves obtained showed that the glass transition temperature increased with the addition of SrO. The direct and indirect band energies of SrO glasses, whose bond structures were evaluated by FTIR and optical properties by UV measurements, were found to decrease in the range of 3.42 eV-3.02 eV and 3.32eV-2.62eV. The nuclear radiation shielding capacities of Sr glasses were then investigated by gamma ray and fast neutron transmission experiments. For gamma-ray transmission experiments, a 133Ba radioisotope was used in combination with an HPGe detector, while a 241Am/Be source and a gas proportional detector were used for neutron absorption experiments. With the addition of SrO, the MAC values of Sr0-Sr4 glasses have shown an increase in the range 0.5116-0.0999 cm2/g and 0.7386-0.1008 cm2/g. Sr glasses has been found to be effective in the attenuation of fast neutrons, and it is even superior to conventional neutron absorbers.