Yazar "Badawi, Ali" seçeneğine göre listele

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    Binary contributions of Dy3+ ions on the mechanical and radiation resistance properties of oxyfluoroborotellurite Dyx-glasses
    (Elsevier Editora Ltda, 2022) Rammah, Y.S.; Issa, Shams A.M.; Tekin, Hüseyin Ozan; Badawi, Ali; Ene, Antoaneta; Zakaly, Hesham M.H.
    5CaF2–5BaF2 – 60B2O3–10TeO2 – (20-x)Na2O – xDy2O3: (0.5 ? x ? 2.5 mol percent) glasses were studied for their physical, mechanical, and gamma radiation resistance. The density of Dy0.5 and Dy2.5 glass samples containing 0.5 and 2.5 mol of Dy2O3 was changed from 2.98 to 3.09 g/cm3, respectively. The estimated values of longitudinal (LB-C) were altered from 171.085 to 165.390 GPa, bulk (KB–C) from 105.100 to 102.680 GPa, Young's (EB-C) from 128.602 to 122.674 GPa, and shear (SB–C) from 49.612 to 47.150 GPa for mechanical characteristics (GPa). The Poisson's ratio (?B-C) was varied between 0.296 and 0.300. The MCNPX code and Py-MLBUF online calculation platform were used to calculate mass attenuation coefficients for all Dyx-glasses. In terms of quantitative values, the acquired results are in good agreement. For all photon energies, the Dy2.5 glass sample exhibits the highest linear (?) and mass (?m) attenuation coefficients. All analyzed Dyx-glasses exhibit a similar trend in half-value layer (T1/2) and mean free path (MFP), (T1/2, ?)Dy0.5 > (T1/2, ?)Dy1.0 > (T1/2, ?)Dy1.5 > (T1/2, ?)Dy2.0 > (T1/2, ?)Dy2.5. Over the whole gamma-ray energy range, the Dy2.5 sample has the highest effective atomic number (Zeff) values. Across the whole photon energy and penetration depth range, the Dy2.5 has the lowest EBF and EABF values. Because of the maximum contribution of Dysprosium (III)-oxide, the Dy2.5 sample can be deemed superior in terms of gamma-ray shielding qualities. © 2022 The Author(s)
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    Nuclear shielding performances of borate/sodium/potassium glasses doped with Sm3+ ions
    (Elsevier Editora Ltda, 2022) Zakaly, Hesham M.H.; Rammah, Y.S.; Tekin, Hüseyin Ozan; Ene, Antoaneta; Badawi, Ali; Issa, Shams A.M.
    In this paper the impact of adding the trivalent samarium (Sm3+) rare earth (RE3+) ions on the nuclear shielding performances of borate/sodium/potassium glasses with chemical form B2O3(70–x)/Na2O15/K2O15/Sm2O3; x = 0.0–2.0 mol% was examined. Material densities were enhanced quantitatively from 2.22 to 2.48 g/cm3. Several radiation shielding parameters have been determined in the 0.15–15 MeV photon energy range via MCNPX simulation code and Phy-X/PSD software. Results showed that the addition of Sm3+ ions to the glasses improved the linear (LAC) and mass (MAC) attenuation coefficients. The Sm2.0 sample (rich with Sm3+ ions and with a high density) has the highest LAC and MAC at all photon energy values under investigation. The half-value layer (T1/2) values of the studied Sm-glasses followed the trend: (T1/2)Sm0.0> (T1/2)Sm0.1> (T1/2)Sm0.3> (T1/2)Sm0.5> (T1/2)Sm0.7> (T1/2)Sm1.0> (T1/2)Sm1.5> (T1/2)Sm2.0. The mean free path (?) has a similar trend as T1/2. The numerical results of effective atomic number (Zeff) were: Sm0.0 = 10.538, Sm0.1 = 10.70646, Sm0.3 = 11.03259, Sm0.5 = 11.28569, Sm0.7 = 11.53882, Sm1.0 = 11.91848, Sm1.5 = 12.42718, Sm2.0 = 12.9175 at 0.015 MeV, and Sm0.0 = 8.36553, Sm0.1 = 8.42831, Sm0.3 = 8.55388, Sm0.5 = 8.67944, Sm0.7 = 8.80502, Sm1.0 = 8.99335, Sm1.5 = 9.28877, Sm2.0 = 9.58377 at 15 MeV. The Sm2.0 glass sample has the greatest Zeff value across all gamma-ray energies. This condition is likewise associated with the highest Sm (Z = 62) content in Sm2.0 when compared to the other studied glasses. In addition, the Sm2.0 sample had the lowest exposure (EBF) and energy absorption (EABF) build-up factors values among the glass samples under investigation. All the obtained observations confirm that the Sm-glass samples can be considered promising materials for attenuation of nuclear radiations. © 2022 The Author(s)
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    A promising alternative: examining TVS tellurite glass for gamma radiation shielding applications
    (Frontiers Media Sa, 2023) Uosif, M. A. M.; Issa, Shams A. M.; Ene, Antoaneta; Mostafa, A. M. A.; Atta, Ali; Badawi, Ali; El Agammy, E. F.
    Radiation shielding is crucial in many types of medical, industrial, and nuclear facilities due to the widespread usage of radioactive isotopes. In this research, we examine the impact of tellurite 65TeO(2)-(35-x)V2O5-xSm(2)O(3) glasses, where x ranges from 0.1 to 5 mol%, for its nuclear security and radiation shielding versus gamma attenuation capabilities. For gamma, the effect that the systematic replacement of Sm2O3 with V2O5 has on the shielding qualities was dissected in great depth. In addition, comparative research was carried out using the most recent borate glasses and the typical shielding materials considered the industry standard. In this study, we utilized the FLUKA algorithm and the FLAIR graphical interface to calculate the attenuation coefficients of glass compositions in the 65TeO(2)-(35-x)V2O5-xSm(2)O(3)system. The gamma energies of 0.356, 0.662, 1.332, and 2.614 MeV, commonly used in gamma shielding investigations, were selected as the radiation source. A comparison between the simulation results by FLUKA and theoretical calculations for mass attenuation coefficients demonstrated excellent agreement, confirming the reliability and accuracy of the FLUKA simulation method. The findings of the current research point to the fact that the TVS5 sample has the highest G(MAC) and lowest G(HVL) and G(MFP,) among other glasses. This points to the possibility that the TVS5 sample might be used in radiation shielding activities, which would result in increased nuclear safety.