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Recent Advances in Ionizing Radiation Shielding Materials
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Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt
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Recent Advances in Ionizing Radiation Shielding Materials

Abstract submission deadline
closed (31 July 2023)
Manuscript submission deadline
closed (31 July 2023)
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1763

Topic Information

Dear Colleagues,

With the increasing use of radiation in various fields of work, such as medicine, industry, and agriculture, it is also necessary to develop radiation shields that can adequately protect the bodies of workers and patients who come into contact with high-energy photons. Topics that researchers should address in this Topic are the use of advanced crystalline materials, the calculation of shielding effectiveness, and how to use them as protective shields while preserving the essential properties of these materials. These materials can be microcomposites or nanocomposites of crystalline polymers, ceramics, clays, concrete, and mortar. Ionizing radiation, such as neutrons, X-rays, and gamma rays, has important applications in our daily lives. Therefore, protection from these ionizing radiations and reducing their intensity is an important factor in preserving human health.

Dr. Mohamed Elsafi
Topic Editor

Keywords

  • linear attenuation coefficient
  • half-value layer
  • radiation protection efficiency
  • advanced materials
  • shielding properties
  • concrete and mortars
  • ceramics
  • polymers

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Crystals
crystals 		2.4 4.2 2011 10.8 Days CHF 2100

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Published Papers (2 papers)

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15 pages, 5941 KiB  
Article
Effect of Waste Iron Filings (IF) on Radiation Shielding Feature of Polyepoxide Composites
by Mohammed T. Alresheedi and Mohamed Elsafi
Crystals 2023, 13(8), 1168; https://doi.org/10.3390/cryst13081168 - 27 Jul 2023
Cited by 2 | Viewed by 794
Abstract
In the present work, photon and neutron attenuation properties of polyepoxide composites produced by doping waste iron filings (IF) at different percentages (0%, 20%, 40%, and 60% iron filing percentage) were obtained using theoretical and experimental techniques. The experimental technique was performed using [...] Read more.
In the present work, photon and neutron attenuation properties of polyepoxide composites produced by doping waste iron filings (IF) at different percentages (0%, 20%, 40%, and 60% iron filing percentage) were obtained using theoretical and experimental techniques. The experimental technique was performed using an HPGe detector with four different gamma lines (0.0595, 0.6617, 1.173, and 1.333 MeV) emitted from three gamma-ray sources (241Am, 137Cs, and 60Co). The theoretical techniques for shielding parameters calculation are estimated with Phy-X software and the XCOM program as well. The experimental and theoretical values of the mass/linear attenuation coefficient (M/LAC), half/tenth value layer (H/TVL), mean free path (MFP), lead equivalent thickness (LEth), and radiation shielding efficiency (RSE) have been determined and compared. A good agreement was achieved during the comparison. The shielding performance of the prepared composites increased with increasing the iron filing rate, where we can arrange the performance of shielding according to EP–IF60 > EP–IF40 > EP–IF20 > EP–IF0 at all different experimental and theoretical energies. The effective and equivalent (Zeff, Zeq) atomic numbers as well as the exposure buildup factor (EBF) at different depletion distances or mean free paths (MFPs) have been calculated for all EP–IF composites. The lowest EBF was for EP–IF60 while the highest EBF was for EP–IF0 through the discussed energy from 0.015 to 15 MeV. Finally, the fast neutron removal cross-section (FRNC) has been calculated for the prepared composites and the results showed improvement in FNRC with increasing the iron filing rate. Full article
(This article belongs to the Topic Recent Advances in Ionizing Radiation Shielding Materials)
(This article belongs to the Section Hybrid and Composite Crystalline Materials)
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16 pages, 5031 KiB  
Article
Synergistic Effect in Ionizing Radiation Shielding with Recent Tile Composites Blended with Marble Dust and BaO Micro/Nanoparticles
by Dalal A. Aloraini, Mohamed Elsafi, Aljawhara H. Almuqrin, Sabina Yasmin and M. I. Sayyed
Crystals 2023, 13(7), 1057; https://doi.org/10.3390/cryst13071057 - 4 Jul 2023
Cited by 2 | Viewed by 871
Abstract
In this study, we investigated the impact of micro- and nano-sized barium oxide addition on the radiation-shielding properties of red clay tiles mixed with waste marble and different sizes of BaO (micro- or nanoparticles) for comparative analysis. The linear attenuation coefficients (LAC) of [...] Read more.
In this study, we investigated the impact of micro- and nano-sized barium oxide addition on the radiation-shielding properties of red clay tiles mixed with waste marble and different sizes of BaO (micro- or nanoparticles) for comparative analysis. The linear attenuation coefficients (LAC) of the prepared samples were measured using an HPGe detector between 0.060 and 1.333 MeV. Moreover, a comparison was made between the experimental micro-composites and values obtained by Phy-X software. The results revealed that the red clay/waste marble tile composites doped with nano-sized BaO demonstrated superior radiation-shielding properties compared to those doped with micro-sized BaO. At 1.33 MeV, WR-20mBaO (containing 20 wt % micro-sized BaO) and WR-20nBaO (containing 20 wt % nano-sized BaO) exhibited HVL values of 4.75 cm and 4.25 cm, respectively. The lower HVL value of WR-20nBaO indicates superior radiation-shielding performance, highlighting the potential benefits of using nano-sized BaO as a radiation-shielding additive. Our findings also demonstrated that increasing the amount of BaO deposited onto red clay mixed-waste marble resulted in improved radiation-shielding properties. Our study demonstrates that adjusting the concentration of BaO is a viable strategy for enhancing the radiation attenuation properties of red clay tiles. In addition, the addition of waste marble to the tiles enhances its mechanical properties, and it is also positively recycled in community service. Full article
(This article belongs to the Topic Recent Advances in Ionizing Radiation Shielding Materials)
(This article belongs to the Section Hybrid and Composite Crystalline Materials)
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