Article
Materials Science, Ceramics
A. S. Abouhaswa, M. I. Sayyed, Abeer S. Altowyan, Y. Al-Hadeethi, K. A. Mahmoud
Summary: A new glass system with varying Sm2O3 content was synthesized using a solid-state conventional approach. The density, structure, optical properties, and radiation shielding capacity of the glasses were studied, showing that the insertion of Sm2O3 enhanced their shielding capabilities.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
F. H. Sallam, Mohamed Tharwat, Aljawhara H. Almuqrin, M. I. Sayyed, K. A. Mahmoud
Summary: This study focuses on improving the gamma radiation protection ability of polyester by using Ni0.5Zn0.5Fe2O4 nanofiller. Four polyester samples with different concentrations of Ni0.5Zn0.5Fe2O4 nanoparticles were fabricated using the sol-gel auto-combustion technique. The fabricated composites were characterized experimentally using XRD, EDX, and Fourier transform infrared spectroscopy. The particle size of the nanofillers and their distribution in the composites were observed using scanning electron microscope and transmission electron microscope. The gamma-ray shielding characteristics of the composites were evaluated using Monte Carlo simulation method.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Materials Science, Textiles
Weibin Li, Shuai Chen, Min Peng, Xian Zhou, Xiaoming Zhao
Summary: A radiation shielding simulation model was established using SuperMC nuclear simulation software system to predict the gamma-ray shielding performance of a coated fabric material. It was found that doping with Pb and Ta can improve the shielding performance but reduce the wear resistance and mechanical properties of the material. Visual analysis revealed the influence mechanism of process parameters on the shielding performance, offering new insights for the design of lead-free flexible shielding materials.
JOURNAL OF INDUSTRIAL TEXTILES
(2023)
Article
Optics
M. I. Sayyed, S. Hashim, K. G. Mahmoud, Ashok Kumar
Summary: Melt quenching is used to create PbO-TeO2-MgO-Na2O-B2O3 glasses with increasing lead concentration leading to increased density and decreased indirect band gap values. The refractive index, optical dielectric constant, and dielectric constant also increase with higher lead content. The partial replacement of B2O3 with PbO compounds affects the shielding characteristics and enhances the linear attenuation coefficient. The fabricated glasses show improved radiation protection efficiency and are recommended for use in radiation zones.
Article
Materials Science, Textiles
Weibin Li, Shuai Chen, Min Peng, Xian Zhou, Xiaoming Zhao
Summary: The radiation shielding simulation model of coated fabric was established using SuperMC nuclear simulation software, solving the design challenges of flexible shielding materials. The coating improved the shielding performance and mechanical properties of fabric composites, but excessive bismuth content or coating thickness decreased the mechanical properties. Analysis of ray energy deposition revealed the influence mechanism of process parameters on shielding performance.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Optics
Hanan Al-Ghamdi, H. Aljawhara Almuqrin, M. S. I. Koubisy, K. A. Mahmoud, M. I. Sayyed, M. A. Darwish, A. M. A. Henaish
Summary: By doping with Dy2O3, both the direct and indirect band gaps of the glass samples decrease, while the Urbach energy increases. The linear attenuation coefficient increases and shielding factors like the half-value layer, radiation protection efficiency, and transmission factor also increase as the ratio of Dy2O3 doping rises.
Article
Nuclear Science & Technology
Mansour Asgari, Hossein Afarideh, Hassan Ghafoorifard, Eskandar Asadi Amirabadi
Summary: The study revealed a direct relationship between the linear attenuation coefficients of the absorbent and filler ratio in polymer composites used for radiation shielding, with decreasing particle size of the shielding material improving radiation shielding features.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Nuclear Science & Technology
Joseph Konadu Boahen, Ahmed S. G. Khalil, Mohsen A. Hassan, Samir A. Elsagheer Mohamed
Summary: In this study, a simple Monte Carlo code, EJUSTCO, is developed for simulating gamma radiation transport in shielding materials, and a deep learning neural network is proposed to predict exponential transformation parameter. The developed code can be used to assess the performance of radiation shielding materials, and the validation results are consistent with theoretical, experimental, and literary results.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Materials Science, Ceramics
E. A. Abdel Wahab, M. S. I. Koubisy, M. I. Sayyed, K. A. Mahmoud, A. F. Zatsepin, Sayed A. Makhlouf, Kh. S. Shaaban
Summary: A novel glass system with a chemical composition described by the formula 50SiO(2)-(48+x) Na2B4O7-x MnO2 was fabricated using a melt-quenching method, and its state was checked using an XRD diffractometer. The study found that obtaining the physical and optical values of the manganese borosilicate glass system could aid in the development of solid-state devices and optical memory equipment. The polarizability and basicity of the glass samples were found to have the same trend as the refractive index, and the linear attenuation coefficient showed significant variations across the samples.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
Hanan Al-Ghamdi, O. L. Tashlykov, M. I. Sayyed, Aljawhara A. H. Almuqrin, Mayeen Uddin Khandaker, K. A. Mahmoud
Summary: Due to the advantages of using gamma-ray radiation sources in various fields, the average equivalent dose received increases. To decrease the equivalent dose, a container made up of metal and glass layers was suggested. The study used simulation code to predict the equivalent dose and confirmed the container's ability to reduce absorbed dose and equivalent dose rate.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Chemistry, Physical
Jamila S. Alzahrani, Z. A. Alrowaili, Canel Eke, Zakaria M. M. Mahmoud, C. Mutuwong, M. S. Al-Buriahi
Summary: This paper presents an extensive evaluation of the nuclear shielding features of Ni-, Fe-, Pb-, and W-based alloys using FLUKA simulations and XCOM nuclear database. The findings show that FLUKA is an accurate technique for developing new alloys for shielding applications in nuclear sites. The radiation protection efficiency varies for different alloys at 0.284 MeV, while the neutron cross sections of the studied alloys are similar, with no significant variation with chemical compositions.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Nuclear Science & Technology
K. A. Mahmoud, O. L. Tashlykov, Aljawhara H. Almuqrin, M. I. Sayyed, S. G. Vlasova
Summary: In this study, a ternary glass system consisting of BaO, B2O3, and CdO compounds was fabricated using the melt-quenching method. The density, mechanical properties, and attenuation coefficient were experimentally investigated and theoretically calculated.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Recep Kurtulus, Taner Kavas, K. A. Mahmoud, M. I. Sayyed
Summary: The study demonstrated that increasing the content of Ag2O enhanced both the physical and optical features of the ZBV glass series, with the ZBV10 sample showing the best performance. The results also confirmed that replacing V2O5 with Ag2O improved the gamma-ray shielding capacity of the explored glass series.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Optics
F. H. F. Al-Saeedi, Haneen M. Alsafi, O. L. Tahlykov, M. I. Sayyed, Hanan Al-Ghamdi, E. V. Kolobkova, F. L. Kapustin, Aljawhara H. Almuqrin, K. A. Mahmoud
Summary: This article describes the process of manufacturing lead-based silicate glass in Iraqi white sand rich with silica, including material selection, manufacturing method, and performance testing. The study found that the fabricated glass has good radiation shielding properties in the gamma-ray energy interval.
Article
Multidisciplinary Sciences
Ali Farzanehpoor Alwars, Faezeh Rahmani
Summary: In this research, a rapid and accurate gamma finder system based on NaI(Tl) detector was designed to locate orphan gamma-ray sources. Through proposing complementary methods to previous research, an approach to solving 3D localization in scenarios with multiple orphan gamma-ray sources was attempted. The new conceptual design was simulated and tested in various scenarios to identify key characteristics and features.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Ceramics
K. A. Mahmoud, M. I. Sayyed, Abdullah M. S. Alhuthali, M. Y. Hanfi
Summary: The effect of substitution Pb2O3 by CuO content was studied for LBPCu glass system, and the mechanical and radiation shielding properties were evaluated. The results showed that the insertion of CuO enhances the different mechanical parameters and improves the shielding properties of the glass.
BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
(2022)
Article
Optics
M. Sayyed, M. Y. Hanfi, K. A. Mahmoud, Ali Abdelaziem
Summary: A novel approach combining Monte Carlo Simulation and the Phy-X/PDS software program was developed to investigate the radiation shielding properties of the CBS family of glass-ceramics. The study identified important parameters controlling the behavior of the CBS shielding family and found that CBS-3 demonstrated the greatest shielding ability.
Article
Optics
M. I. Sayyed, K. A. Mahmoud
Summary: By partially replacing silicon oxide with bismuth oxide, the radiation shielding properties of lithium zinc silicate glasses can be significantly enhanced. The Monte Carlo simulation showed that the replacement of SiO2 with Bi2O3 leads to a substantial increase in the shielding capacity of the glasses.
Article
Geochemistry & Geophysics
Mahmoud M. Hassaan, Sayed A. Omar, Ahmed E. Khalil, Taher M. Shahin, Islam M. El-Naggar, M. Sayyed, Mohamed Y. Hanfi
Summary: This paper focuses on the characteristics, origin, and feasibility of the granite bodies in the eastern region of Egypt, and conducts comprehensive studies including geology, geochemistry, and remote sensing techniques to reveal the controlling factors and formation pathways of the various rock units and deposits.
Article
Engineering, Electrical & Electronic
E. Hannachi, K. A. Mahmoud, M. Sayyed, Y. Slimani
Summary: This study reports the influence of different oxide doping on the structure, optical characteristics, and radiation protecting performances of perovskite BaTiO3 ceramic. Doping with ZnO and WO3 enhances the density and shielding capacity of the ceramic, while doping with SiO2 reduces the density and shielding capacity. The doping also affects the crystal structure and optical properties of the ceramic.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
N. Ekinci, K. A. Mahmoud, S. Saritas, Bunyamin Aygun, M. M. Hessien, Ibrahim Bilici, Y. S. Rammah
Summary: Samples of new polymeric material based on polypropylene doped with various Tincal concentrations have been developed. The structural characteristics of the produced polymeric materials were investigated using X-ray diffraction (XRD) and Raman Spectroscopy. The obtained materials' shielding capacity was studied in terms of mass attenuation coefficient and half-value layer. Experimental results show that increasing Tincal concentration has a beneficial influence on the linear attenuation coefficient.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Nuclear Science & Technology
Mohamed Y. Hanfi, Ahmed K. Sakr, A. M. Ismail, Bahig M. Atia, Mohammed S. Alqahtani, K. A. Mahmoud
Summary: The physical properties and radiation shielding capabilities of synthetic B2O3-As2O3 glass ceramic were investigated by varying the concentration of As2O3. XRD analysis showed improved crystallinity with the addition of As2O3. The radiation shielding properties, including the linear attenuation coefficient, half-value layer, transmission factor, and radiation protection efficiency, were studied for the B2O3-As2O3 glass ceramic.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
M. I. Sayyed, Mansour Almurayshid, Fahad I. Almasoud, Amjad R. Alyahyawi, Sabina Yasmin, Mohamed Elsafi
Summary: This study aims to manufacture composite samples based on waste marble as novel radiation shields and analyze their physical and radiation shielding ability. The results show that by adding CdO and PbCO3 in appropriate amounts, the density and linear attenuation coefficient of the new composite material are improved.
Article
Crystallography
Essia Hannachi, M. I. Sayyed, Suhairul Hashim, Karem Mahmoud, Yassine Slimani
Summary: This research aims to study the radiation-protecting characteristics of calcium titanate (CaTiO3) perovskite-based ceramic material. The ceramics were prepared using the solid-state reaction method and treated at different temperatures. XRD and FT-IR analysis revealed a CaTiO3 phase formation with an orthorhombic structure. The size of the crystallites increased with rising temperatures, and the relative density also showed an increase. Monte Carlo simulation was used to assess the impact of temperature on the radiation-protecting characteristics, showing a decrease in gamma-photons average track length and an increase in the linear attenuation coefficient with temperature rise.
Article
Crystallography
Essia Hannachi, Karem G. Mahmoud, Yassine Slimani, M. I. Sayyed, Jack Arayro, Yasser Maghrbi
Summary: A series of barium titanate ceramics were prepared using the solid-state reaction route at various sintering temperatures. The structure of the ceramics was examined using X-ray diffraction and FTIR spectroscopy. Optical bandgap energy was estimated through UV-Vis-reflectance data. The ceramics' ability to attenuate ionizing radiation was evaluated using Monte Carlo simulation, and shielding parameters were assessed.
Article
Chemistry, Physical
S. A. Bassam, K. A. Naseer, V. K. Keerthana, P. Evangelin Teresa, C. S. Suchand Sangeeth, K. A. Mahmoud, M. I. Sayyed, Mohammed S. Alqahtani, E. El Shiekh, Mayeen Uddin Khandaker
Summary: A set of boro-tellurite glasses doped with Dy3+ ions were prepared using the melt quenching method, and the radiation resisting aptitude of the glasses was evaluated through various structural and elastic features. The results showed that the molar volume decreased with increasing tellurium content, indicating the presence of more bridging oxygens in the glass structure. The rigidity, density, and connectivity of the glass increased due to the rise in cross-link density. Glass with 40% TeO2 exhibited high elastic moduli and good radiation shielding properties.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Physical
S. Arunkumar, K. A. Mahmoud, M. Yoosuf Ameen, K. A. Mahmoud, M. I. Sayyed, K. Marimuthu, D. James Silvia, R. Divina, Mohammed S. Alqahtani, El Sayed Yousef
Summary: A new series of Niobium bariumtelluroborate glasses doped with Dy3+ ions were prepared with varying BaO concentrations. The amorphous nature of the glasses was confirmed by XRD investigation. FTIR spectra revealed diverse functional groups. The optical characteristics of the glasses were studied using UV-Vis spectral measurements. The structural and physical properties, as well as the shielding parameters, were estimated and discussed for the Dy3+ incorporated Niobium bariumtelluroborate glasses. The radiation shield capacity of the glasses was improved by increasing the BaCO3 concentration.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Crystallography
Hicham Es-soufi, M. I. Sayyed, Aljawhara H. Almuqrin, Raman Rajesh, Alan Rogerio Ferreira Lima, Hssain Bih, Lahcen Bih
Summary: Dielectric ceramics have attracted much attention due to their low dielectric loss and high permittivity values, making them suitable for downsizing and use in various electronic circuits. This study focuses on the substitution of W6+ with Mo6+ in the Ba0.54Na0.46Nb1.29W(0.37-x)MoxO5 system and its impact on the structural and dielectric features of the crystalline phases. The crystalline phases were prepared using solid-state reaction method and analyzed through XRD, Raman, and dielectric techniques.
Article
Polymer Science
Haifa M. M. Almutairi, Wafa M. M. Al-Saleh, Mohammad Ibrahim Abualsayed, Mohamed Elsafi
Summary: The study examined the effects of CeO2 content and particle size on the radiation shielding abilities of polydimethylsiloxane. Different samples of silicon rubber with varying CeO2 content were prepared, and the linear attenuation coefficient (LAC) was measured. The results showed that increasing the CeO2 content increased the LAC. The size of the particles also affected the LAC, with nano CeO2 having a higher LAC than micro CeO2. The study also investigated the half value layer (HVL) and radiation protection efficiency (RPE) of the samples.
Article
Crystallography
Dalal A. A. Aloraini, Mohamed Elsafi, Aljawhara H. H. Almuqrin, Sabina Yasmin, M. I. Sayyed
Summary: In this study, the effect of incorporating micro- and nano-sized barium oxide (BaO) on the radiation-shielding properties of red clay tiles mixed with waste marble was investigated. The results showed that the red clay/waste marble composites doped with nano-sized BaO exhibited better radiation-shielding properties compared to the ones doped with micro-sized BaO. Increasing the amount of BaO deposited onto the red clay mixed-waste marble also improved the radiation-shielding properties. This study demonstrates that adjusting the concentration of BaO is a viable strategy for enhancing the radiation attenuation properties of red clay tiles.
