Yazar "Abouhaswa, A. S." seçeneğine göre listele

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    Exploring the potential of BBNCo glasses: Physical, optical, and radiation shielding analysis
    (Elsevier, 2023) Uosif, M. A. M.; Issa, Shams A. M.; Abouhaswa, A. S.; Mostafa, A. M. A.; Atta, Ali; Zakaly, Hesham M. H.
    The ability of new Co3O4-doped bismuth borate glasses to block radiation was investigated in this study. The glasses had compositions of 55B2O3-35Bi2O3-(10-x)Na2O-xCo3O4 (where x = 0, 0.75, 1.5, 2.25, and 3 wt%). The optical properties of the prepared bismuth borate glass doped with Co3O4 ions have been studied. The UV demonstrates that as the Co3O4 substitution ratio was increased, the samples' absorbance increased noticeably. The optical band gap energies decreased with increasing Co3O4 concentration in the case of direct transition and in-direct transition. In addition to the Urbach energy EU values of the prepared glass samples was decreased as the concentration of Co3O4 ions increased. Using the Phy-X/PSD program, an investigation was conducted on the gamma-radiation shielding capabilities of new BBNCo glasses. The GLAC (linear attenuation coefficient) readings for BBNCo increased from a previous value of 0.7575 cm2/g to a new value of 0.8589 cm2/g when the energy was 356 keV. In addition, computations have been made to determine the removal cross-sections of fast neutrons and the neutron half value layer (NHVL). The addition of Co3O4 seems to increase the efficiency of bismuth borate glass in deflecting gamma and neutron radiation, as shown by the findings.
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    Impact of incremental zinc-oxide incorporation on optical, magnetic, mechanical and photon transmission properties of K2O, SrF2, PbO containing borate-glasses
    (Elsevier, 2024) Almousa, Nouf; Issa, Shams A. M.; Zakaly, Hesham M. H.; Abulyazied, D. E.; Abouhaswa, A. S.; Tekin, Hüseyin Ozan
    This study examines the radiation shielding properties of borate glass systems, with a focus on the simultaneous enhancement of optical, mechanical, and magnetic characteristics. The glass composition is represented by formula (55-x)B2O3+25PbO+10SrF2+10K2O 2 O 3 +25PbO +10SrF 2 +10K 2 O + xZnO (where x: 0.0-10.0 mol%). By manipulating the ZnO concentration, we aimed to investigate its role as a radiation attenuator and its effects on the glass's optical, mechanical, and magnetic properties. Using traditional melt-quenching techniques, we produced the glass samples and examined their density, molar volume, linear attenuation coefficients (GLAC), LAC ), mean free paths (GMFP), MFP ), half-value layers (GHVL), HVL ), and optical and magnetic properties. Our findings demonstrate that higher ZnO concentrations lead to a significant increase in density and a corresponding decrease in molar volume, thereby enhancing the glasses' ability to shield against gamma radiation. The radiation attenuation analysis revealed that increasing ZnO content substantially improves G LAC values across the energy range of 356-1333 keV. Additionally, ZnO incorporation decreases the optical bandgap, shifting the UV absorption edge to shorter wavelengths and enhancing UV dielectric capacity. Magnetic properties were assessed using vibrating sample magnetometer (VSM) measurements, showing a strong correlation between ZnO content and the effective atomic number (Zeff). eff ). It can be concluded that ZnO not only contributes to radiation shielding but also modifies the electronic structure of the glass, impacting its optical absorption properties.
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    Improved radiation shielding efficiency and optical properties of borate glass by incorporating dysprosium(III) oxide
    (Elsevier, 2024) Almousa, Nadia; Issa, Shams A. M.; Abouhaswa, A. S.; Zakaly, Hesham M. H.
    The present investigation used the melt-quench method to produce four distinct glass systems using boron-Dy2O3 glass. The glass system consisting of B2O3, BaO, ZnO, and Li2O was augmented with Dysprosium(III) Oxide. A series of borate glasses with the chemical formula (62-x)B2O3-18BaO-10ZnO-10Li2O-xDy2O3 where x=0, 1, 2, 3 mol%. The experimental investigation of Dy2O3 as additives was conducted, with a specific emphasis on their optical characteristics. Also, the addition of Dy2O3 causes the intensity of absorption to increase. Moreover, because of changes in the glass network and modifier, the absorption edge moved to a higher wavelength as the concentration of Dy3+ ions increased, from 345.46 nm for Dy-0-367.48 nm for Dy-3. This study examined glasses with different compositions to evaluate their effectiveness in shielding gamma-rays. The Phy-X/PDS and FULKA Code were utilised for this investigation. A comparison analysis was performed on the obtained results. The effective atomic number and other parameters, such as linear attenuation coefficient and half value layer, were calculated within the energy range of 0.015-15 MeV. The study revealed that the Dy-0 has the lowest linear attenuation coefficient compared to the other samples analysed. The glasses Dy-0 and Dy-3 showed half-values of 0.044 and 0.039 cm, respectively, when exposed to 0.05 MeV. The increase in effective atomic number was attributed to a higher quantity of electrons that are accessible for photon interaction. This, in turn, resulted in a reduced probability of gamma-ray passage through the shielding material. According to the findings of the gamma radiation shielding experiment, the sample that had the largest amount of Dy2O3 exhibited the most effective shielding qualities, making it an excellent candidate for use in radiation shielding applications.