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    Experimental and FLUKA evaluation on structure and optical properties and ?-radiation shielding capacity of bismuth borophosphate glasses
    (Elsevier Ltd, 2022) Madbouly, A.M.; Sallam, O.I.; Issa, Shams A.M.; Rashad, M.; Hamdy, Amany; Tekin, Hüseyin Ozan; Zakaly, Hesham M.H.
    For 662, 1173, 1275, and 1333 keV gamma-ray energy, photon transmissions, linear attenuation coefficients, half value layer, tenth value layer, and mean free path values of bismuth-borophosphate glasses were measured experimentally. Then, the measured findings were compared to the FLUKA code. The FLUKA code findings agreed well with the experimental results. Furthermore, the findings show that adding Bi2O3 to the glass network improves the shielding properties. The current data reveal that when the Bi2O3 content rises, so does the absorbance. Furthermore, the optical constants of the present gasses, such as optical band gap, phonon energy, and tails of localized states, were examined. Fourier transform infrared (FTIR) spectrometer was used to analyze the Fourier transform infrared (FTIR) spectra of our samples at room temperature in the 4000–400 cm?1 wavenumber range. From a shielding standpoint, bismuth-borophosphate glasses offer excellent gamma-ray shielding properties. © 2022
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    Fabrication, optical, structural, and gamma-ray attenuation properties of novel slag-waste glasses as superior shields: An exploring journey for waste to glass transformation
    (Elsevier GmbH, 2022) Issa, Shams A.M.; Zakaly, Hesham M.H.; Rashad, M.; Ali, Ahmed S.; Tekin, Hüseyin Ozan
    We present a comprehensive study on the transformation of municipal slug wastes into glass samples with exceptional gamma-ray attenuation capabilities that may be used in medical and industrial radiation applications to the benefit of society. The whole process is performed using an adsorbent developed by loading iron oxide and TiO2 on municipal solid waste melted slag. The loading is carried out through chemical reactions and high-temperature process. The oxidation of arsenite with a concentration of 100 mg L?1 is completed in 3 h. Next, the glass synthesis process is performed using well-known melt-quenching method. Structural, optical, and gamma-ray attenuation properties are determined using experimental and theoretical methods. Our findings showed that a wide hump centered at 2?= 30° with no indication of any precise peaks emerging in the crystalline phases and glasses under investigation have amorphous natures. Using several well-known radioisotope energies, the half-value layers of slow waste glasses are determined. The 11-G sample demonstrated the greatest gamma-ray attenuation characteristics among the manufactured glass samples. The 11-G sample's half layer values are then compared to those of comparable glass, concrete, and polymer shields available in the literature. The results demonstrated that 11-G is clearly better than the other shield types. It can be concluded that some other novel materials with superior shielding properties may be manufactured using more thoroughly separating techniques in terms of determining the best conditions for this type of superior materials. It can be also concluded that some other characterization phases may be conducted in terms of identifying the undiscovered properties of the current samples towards better understanding of slug-waste based glasses and their potential applications.
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    Unveiling the structural, optical, and electromagnetic attenuation characteristics of B2O3-SiO2-CaO-Bi2O3 glasses with varied WO3 content
    (Pergamon-Elsevier Science Ltd, 2023) Ali, Ahmed S.; Alrowaily, Albandari W.; Issa, Shams A. M.; Rashad, M.; Elsaman, Reda; Zakaly, Hesham M. H.
    This study provides insight into B2O3-SiO2-CaO-Bi2O3 glasses where novel results for the effects of WO3 content on its structural and optical properties have been demonstrated. Thus, provides useful data for developing new glasses for optical and electromagnetic shielding applications. The effect of WO3 content on the structural and optical properties of B2O3-SiO2-CaO-Bi2O3 glasses was investigated along with radiation shielding features which have been calculated by XCOM program. BSCB/W-00, BSCB/W-2.5, BSCB/W-5.0, BSCB/W-7.5, BSCB/W10, BSCB/W-15, and BSCB/W-20 refer to seven samples of bismuth borosilicate glass system doped with 0.0, 2.5, 5, 7.5, 10, 15, and 20% of WO3, respectively, synthesized using the melt quenching technique. The density of the glasses decreased with increasing WO3 content due to the replacement of Bi2O3 with lower-density WO3. It was found that the absorption coefficient decreased with increasing WO3 content up to 10 wt%, but showed an opposite trend for samples with higher WO3 content. The optical band gap and the transition type were affected as the WO3 content increased. The electromagnetic wave decay or skin depth was also calculated. Overall, the shielding effectiveness of investigated samples BSCB/W-00, BSCB/W-2.5, BSCB/W-5.0, BSCB/W-7.5, BSCB/W10, BSCB/W-15, and BSCB/W-20 has reduced with the enlargement of the WO3 concentration. BSCB/W-00, out of all the samples tested, has the highest shielding efficiency.