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Öğe Corrigendum to “Exploring the potential of BBNCo glasses: Physical, optical, and radiation shielding analysis”(Elsevier B.V., 2023) Uosif, M.A.M.; Issa, S.A.M.; Abouhaswa, A.S.; Mostafa, A.M.A.; Atta, A.; Zakaly, H.M.H.The authors regret < M.A.M. Uosif a,*, Shams A.M. Issa b,c,* *, A.S. Abouhaswa d,e, A.M.A. Mostafa a, Ali Atta a, Hesham M.H. Zakaly c,f,g,*** > * Corresponding author. Physics Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia ** Corresponding author. Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia *** Corresponding author. Physics Department, Faculty of Science, Al-Azhar University, Assiut, 71452, Egypt The authors would like to apologise for any inconvenience caused. © 2023 Elsevier B.V.Öğe Enhancing radiation shielding transmission factors and mechanical Robustness of borosilicate glasses through Bi2O3 modification: A comprehensive study(Elsevier Ltd, 2024) Almousa, N.; Issa, S.A.M.; Tekin, H.O.; Rammah, Y.S.; Mostafa, A.M.A.; Sen, Baykal, D.; Alshammari K.The mechanical behavior and gamma radiation attenuation features of borosilicate glasses with chemical compositions 16ZnO–8BaO-5.5SiO2-0.5Sb2O3-(70-x)B2O3/xBi2O3 are extensively investigated. Makishima-Mackenzie principle, Monte Carlo code, and Phy-X/PSD software are utilized in terms of determining these properties. Our results showed that the total packing density (Vt) decreased from 0.634851 to 0.571458, while the total dissociation energy increased from 26.612 (kJ/cm3) to 29.652 (kJ/cm3) for S1-glass (with 10 mol% of Bi2O3) and S5-glass (with 30 mol% Bi2O3). All elastic moduli are enhanced by increasing the Bi2O3 additive in the investigated glasses. Poisson's ratio was decreased from 0.281226 for S1-glass to 0.256957 for S5-glass. In terms of gamma-ray shielding parameters; linear (?) and mass attenuation (?m) coefficients for the rich glass sample with B2O3 (S5) possess the highest values among all investigated (S1–S5) samples. The glass sample S5 is reported with the lowest values of tenth (TVL) and half (HVL) value layers among all studied glasses. In addition, the exposure (EBF) and energy absorption (EABF) bulidup factors were decreased with increasing the amount of Bi2O3 reinforcement for mean free path values from 0.5 to 40 mfp. The lowest possible levels of attenuation (minimum transmission) were measured at a thickness of 3 cm for all of the glass samples. © 2024 Elsevier LtdÖğe An experimental evaluation of CdO/PbO-B2O3 glasses containing neodymium oxide: Structure, electrical conductivity, and gamma-ray resistance(Elsevier Ltd, 2022) Zakaly, H.M.H.; Issa, S.A.M.; Tekin, Hüseyin Ozan; Badawi, A.; Saudi, H.A.; Henaish, A.M.A.; Rammah, Y.S.A comprehensive set of experimental measurements was carried out to investigate the influence of Nd3+ ions on the structure, electrical conductivity, and gamma-ray protection of CdO/PbO-B2O3 glasses containing neodymium oxide with the chemical formula 20CdO/20PbO/(60-x)B2O3/xNd2O3 (0 ? x ? 4 wt%) (5.034-5.232 g/cm3). Raman spectra have been obtained over a range of 1600-180 cm?1, and electrical conductivity (?) has been measured at frequencies of 0.120, 1, 10, and 100 KHz, as well as at other frequencies. In this study, gamma-ray attenuation has been studied at various gamma-ray energies (ranging from 0.081 to 2.614 MeV). The results revealed that the PbO in the investigated glass networks fills the interspaces of [BO3] units with Pb2+ ions, therefore serving as a network member. In general, it was found that (?) of the examined glasses falls as temperature increases, reaching its lowest value at the composition's transition temperature. Above this transition temperature, conductivity rises. Using 0.662 MeV, the studied samples exhibited experimental linear attenuation coefficients (?exp.) of 0.3369 cm?1, 0.3401 cm?1, 0.3434 cm?1, 0.3467 cm?1, and 0.3501 cm?1 (for the Nd-0.0, Nd-1.0, Nd-0.2, Nd-0.3, and Nd-4.0 glasses, respectively). With respect to the half value thickness (T1/2) and mean free path (?), the Nd-4.0 sample has the lowest values at all of the gamma-ray energies tested. According to these results, the Nd-4.0 glass sample exhibits higher attenuation capabilities against ionizing radiation when compared to the other samples. © 2022Öğe Exploring elastic mechanics and radiation shielding efficacy in neodymium(III)-enhanced zinc tellurite glasses: a theoretical and applied physics perspective(Islamic Azad University, 2023) Zakaly, H.M.H.; Rammah, Y.S.; Issa, S.A.M.; Almousa, N.; El-Refaey, A.M.; Shams, M.S.The present work scrutinizes the radiation protection features and mechanical characteristics of neodymium zinc-tellurite of composition [(TeO2)70-(ZnO)30]1?x-(Nd2O3)x: x = 0 ? 5 mol% in steps of 1 (TZNd1 – 5). The Makishima–Mackenzie’s model was adopted for the computation of the Poisson’s ratio (PR) and elastic moduli. WinXcom and EXABCal software’s were performed to evaluate the radiation shielding parameters and buildup factors, respectively of TZNd-glasses. Results revealed that the increasing of Nd2O3 concentration in TZNd-glasses from 1 to 5 mol% had a positive effect on their elastic parameters: Young’s modulus increased from 53.13 to 54.81 GPa, bulk modulus changed from 31.95-33.65 GPa, and the PR varied from 0.222 to 0.228 for TZNd1 to TZNd5. There was a small increase in the Z/A as the Nd content increased, which leads to slight increase in TMSP of the particles. The mass attenuation coefficient (µm) increased in the order TZNd1 < TZNd2 < TZNd3 < TZNd4 < TZNd5. The maximum value of LAC obtained at 15 keV were 246, 249, 253, 257, and 260 cm?1 for TZNd1, TZNd2, TZNd3, TZNd4, and TZNd5, respectively. The HVT varies inversely with the linear attenuation coefficient. Throughout the considered energy spectrum the range of Ze f f for the glasses varied from 22.65 ?40.22, 22.64 ?40.25, 22.64 ?40.29, 22.63 ?40.32, and 22.63 ?40.36 for TZNd1, TZNd2, TZNd3, TZNd4, and TZNd5, respectively. The values of fast neutron removal cross section ?R showed a steady increase as the partial densities of Nd and oxygen of the TZNd-glass systems increased. Generally, one can conclude that the additive of Nd2O3 to TeO2-ZnO glasses leads to enhance their mechanical properties and increase their ability to absorb neutron and photon to apply in nuclear medicine applications. © 2023, Islamic Azad University. All rights reserved.Öğe Investigation of borate glasses reinforced with iron (III) oxide(Elsevier B.V., 2024) Alfryyan, N.; Alsaif, N.A.M.; Al-Ghamdi, H.; Issa, S.A.M.; Zakaly, H.M.H.; El-Hamalawy, A.A.; Sadeq M.S.Five samples of borate glasses reinforced with various ratios of Fe3+ ions with chemical formula (60-X)B2O3–10ZnO–10CdO–5Li2O–15Na2O-XFe2O3: (0.0 (Fe-0.0) ? X ? 1 (Fe-1.0) mol%) were prepared using the melt-quenching technique. The structure, physical, optical characteristics, and ?-ray attenuation properties of the prepared Fe-X glasses have been investigated. The amorphous state of Fe-X glasses confirmed by XRD observations. Density (?glass) of the Fe-X glasses increased from 3.21 g cm?3 to 3.91 g cm?3. Molar volume (Vm) gradually reduced from 18.87 cm3/mol to 15.35 cm3/mol with increasing Fe2O3 content in the glass network from 0.0 to 1.0 mol%. The color of Fe-X glasses changed from yellow to brown according to the absorption bands located at around 385–412 nm and 407–429 nm within the visible spectrum. The indirect optical band gap (Eg) decreased from 3.37 eV to 2.78 eV, while the linear refractive index (no) increased from 2.31 to 2.45. Mass- (MAC) and linear- (LAC) attenuation coefficients increased as Fe3+ ions increased in the glass network. The Fe-1.0 sample with highest Fe2O3 content possessed the lowest values of half-value layer (HVL) and mean free path (MFP) shielding parameters. Results revealed that the suggested glass compositions can be applied in optical and radiation protection fields. © 2024 Elsevier B.V.Öğe Investigation of the elastic moduli, optical characteristics, and ionizing radiation attenuation capacity of specific strontium borosilicate glasses(Springer, 2022) Issa, S.A.M.; Tekin, Hüseyin Ozan; Hessien, M.M.; Rammah, Y.S.This study aims to investigate a specific strontium borosilicate with the form 30SiO2– 40B2O3– 30SrO– xEu2O3 (x = 0.1, 0.3, 0.4, 0.5, and 0.6 mol%) glasses encoded as (GE0.1-GE-0.6) in terms of their nonlinear/linear optical, mechanical characteristics as well as gamma photons attenuation capacity. The molar refractivity (Rmolar) was possessed the values 19.409, 19.440, 19.256, 19.575, and 19.819 (cm3/mol), while the molar polarizability (?molar) was possessed the values 7.702, 7.714, 7.641, 7.768, and 7.863, (cm3) for GE0.1, GE.0.3, GE0.4, GE0.5, and GE0.6 glasses, respectively. Values of the optical susceptibility (?3) were 4.000 × 10?12, 4.534 × 10?12, 4.640 × 10?12, 4.749 × 10?12, and 5.095 × 10?12 (esu), and values of nonlinear refractive index (n2optical) were 6.196 × 10?11, 6.931 × 10?11, 7.075 × 10?11, 7.224 × 10?11, and 7.695 × 10?11 for GE0.1, GE.0.3, GE0.4, GE0.5, and GE0.6 glasses, respectively. The mass attenuation coefficient (µm) values were obeyed the trend: (µm)GE0.6 > (µm) GE0.5 > (µm)GE0.4 > (µm) GE0.3 > (µm) GE0.1. The half value layer (T1/2) values of 0.192 cm, 0.178 cm, 0.171 cm, 0.167 cm, and 0.164 cm were recorded for GE0.1, GE0.3, GE0.4, GE0.5, and GE0.6 samples at 0.06 MeV photon energy, respectively. The findings indicated that GE0.6 had the lowest values of mean free path (?) and the highest effective atomic numbers (Zeff) at the photon energies investigated. The GE0.1 sample was reported the maximum exposure and energy absorption buildup factors (EBF and EABF) values, while the minimum values were reported for the GE0.6 sample. © 2022, The Author(s) under exclusive licence to Australian Ceramic Society.Öğe Synthesis and characterization of Bi2O3–B2O3–SiO2–MgO glasses: Structural, optical, and shielding properties(Elsevier B.V., 2024) Alsafi, K.; Aloraini, D.A.; Issa, S.A.M.; Zakaly, H.M.H.; Assem, E.E.; Shaaban, K.S.The systematic investigation of the impact of Bi2O3 on the structural, spectroscopic, and radiation features of 15SiO2 - 75B2O3 - (10-x) MgO - xBi2O3, x= (0 ? x ? 10) glasses were studied. The increase in glass density as Bi2O3 content increase is due to the incorporation of Bi2O3 into the glass network. XRD patterns indicate an amorphous, glassy nature of the glasses. The optical absorption spectra suggest that as the content of Bi2O3 increases, the optical band gap (Eopt.) widens and the Urbach energy (Eu) decreases. It has been observed that the opposite trend between the (Eopt.) and (Eu). The radiation shielding characteristics of MgBi glasses have been evaluated through the assessment of several fundamental radiation attenuation variables. As Bi2O3 content increases would enhance properties like (HVL), (MFP), and (Zeq), especially at lower energy ranges. Adding Bi2O3 to the glassy system has a positive impact on enhancing its neutron attenuation ability. The MgBi-10 glass has the best shielding performance against fast neutrons. The MgBi-10 glass sample shows promising properties for optical and radiation shielding purposes. © 2024 Elsevier B.V.Öğe Synthesis and structural, electrical, optical, and gamma-ray attenuation properties of ZnO-multi-walled carbon nanotubes (MWCNT) composite separately incorporated with CdO, TiO2, and Fe2O3(Elsevier Ltd, 2022) Başgöz, Öyküm; Güler, Ömer; Evin, Ertan; Yavuz, Cağdaş; Almisned, Ghada; Issa, S.A.M.; Zakaly, Hesham M.H.; Tekin, Hüseyin OzanIn this study, Fe2O3, TiO2, and CdO semiconductor metal oxides were separately incorporated into the ZnO-MWCNT composite at different weight percentages. Accordingly, several experimental analyses on electrical, optical, and radiation shielding characteristics of coupled semiconductor metal oxides nanocomposites were performed to determine their monotonic impact on the investigated material properties. Moreover, gamma-ray shielding properties of these novel materials were determined using MCNPX general-purpose Monte Carlo code. At 5% oxide addition, the maximum electrical conductivity was found in all groups for all temperatures. Moreover, 5% oxide reinforcement resulted in the maximum reflection characteristics in all groups. Among the CdO doped materials, the CZnOCd5 sample exhibits the highest electrical conductivity behaviour at room and high temperatures. The Eg value calculated for the CZnOCd5 sample was 3.284 eV. The CZnOCd2.5 and CZnOCd5 samples had the greatest Eg values when compared to the pure sample and the samples from other groups. The CZnOCd5 sample has the highest reflectance value in the CZnOCd group's reflectance graph. On the other hand, the maximum gamma-ray attenuation properties were reported for CZnOCd5 sample. Among the analysed samples, the CZnOCd5 sample's characteristics provide a preliminary motivation for a more comprehensive analysis of this material and assessment of potential radiation protection applications. © 2022 Elsevier Ltd and Techna Group S.r.l.Öğe Thermal and optical characteristics of synthesized sand/CeO2 glasses: Experimental approach(Springer, 2022) Henaish, A.M.A.; Zakaly, H.M.H.; Saudi, H.A.; Issa, S.A.M.; Tekin, Hüseyin Ozan; Hessein, M.M.; Rammah, Y.S.In this study, glass samples of composition 20PbO-20CaO-20Sand-(40 ? x)B2O3-xCeO2, where x = 0, 2.5, 5, 7.5, and 10 in wt.% and sand = SiO2 (90.4%) + CaO (2.8%) + ZrO2 (2.3%) + Fe2O3 (2.1%), were fabricated via the ordinary melt quenching technique. The thermal and optical properties of the glasses were experimentally investigated using differential scanning calorimetry (DSC) analysis, which is measured as a function of temperature based on the difference in the amount of heat needed to raise the temperature of a sample and reference. All glasses were found to be thermally stable up to 550°C. The glass transition temperature (Tg) varied from 211°C to 219°C, crystallization temperature (Tc) varied from 303°C to 310°C, and melting point (Tm) was 577°C. The values of the indirect optical energy band gaps (EOptical, Indirect) reduced from 2.63 eV to 2.28 eV, while the direct gaps (EOptical, Direct) reduced from 5.07 eV to 4.17 eV. Urbach’s energy (EU) was changed from 0.42 eV to 0.46 eV. The dielectric constant behaved similarly to the refractive index and absorption coefficient of the proposed glasses. The refractive index data were analyzed to obtain important optical information and the corresponding derivative electrical parameters, namely, the oscillator energy, dispersion energy, dielectric constant at high frequency, the dielectric loss, and the energy-loss functions. There was a remarkable increase in the optical conductivity (?opt) with increasing CeO2 content, with peaks appearing in all samples doped by CeO2 and reaching a peak maxima of about 2.72–3.10 eV. Volume energy loss (VELF) and surface energy loss (SELF) functions were increased with increasing CeO2 content, with a characteristic peak at around 3.47 eV for all proposed samples. © 2022, The Minerals, Metals & Materials Society.
