Fast and thermal neutrons attenuation through micro-sized and nano-sized CdO reinforced HDPE composites

El‐Khatib, Ahmed M.; Hamada, M.; Alabsy, Mahmoud T.; Youssef, Yehia M.; Elzaher, Mohamed Abd; Badawi, Mohamed S.; Fayez-Hassan, M.; Kopatch, Y.; Ruskov, I.; Abbas, Mahmoud I.

doi:10.1016/j.radphyschem.2020.109245

Cited by 29 publications

(14 citation statements)

References 24 publications

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“…6 shows typical stress–strain curves of pure r-HDPE and r-HDPE + x % Ilm composite sheets with varying concentrations determined at room temperature and a constant loading rate (500 mm min −1 ). 24,25…”

Section: Resultsmentioning

confidence: 99%

Recycled high-density polyethylene plastic reinforced with ilmenite as a sustainable radiation shielding material

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Recycled high-density polyethylene plastic reinforced with ilmenite as a sustainable radiation shielding material

et al. 2023

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“…All-inclusive over half of the industrial facility PVC is utilized in development as a development material since it is modest and simple to introduce. Lately, polyvinyl chloride has supplanted numerous development materials in numerous zones despite worries about the effect of polyvinyl chloride on the earth and human wellbeing [1].…”

Section: Synthesis Of Pvc Compositesmentioning

confidence: 99%

“…According to the well-known formula Beer-Lambert law [21], the linear attenuation coefficient µ (cm -1 ) at a particular γ energy for each composite material was calculated by equation ( 1) [22]. (1) where N o is the net area at zero absorber thickness and N x is the net area at absorber thickness x. The density of each sample was measured experimentally using the Archimedes principle [23] and listed in the tab.…”

Section: Gamma-ray Shielding Properties Of Pvc Compositesmentioning

confidence: 99%

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Gamma attenuation through nano lead - nano copper PVC composites

Abbas

El-Khatib

Badawi

et al. 2021

Nucl Technol Radiat Prot

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Polymer composites of Polyvinyl chloride (PVC) were loaded up with micro and nano PbO/CuO particles. The added percentage of each by mass was [10 wt.%, 20 wt.%, 30 wt.%, and 40 wt.%] plus 40 wt.% of mixed composite (20 wt.% CuO+ 20 wt.% PbO). The mass and linear attenuation coefficients of the investigated composites were measured as a function of ?-ray energies going from 59.53 keV to 1408.01 keV utilizing standard radioactive point sources. To confirm the validity of these results the attenuation coefficients for bulk composites (PVC+PbO and PVC+CuO) were calculated by using XCOM software. The results were in good agreement with the values obtained from experimental work. On comparing the attenuation coefficients of the different composites it was found that those loaded with either nano PbO or CuO have higher values than those loaded with bulk sizes with the same percentage. Also, samples loaded with nano PbO have the highest attenuation coefficients even on comparing with (20 wt.% CuO+ 20 wt.% PbO), especially in the energy region below 1 MeV, but for greater energies, the values become very closed. The investigation of the mechanical properties of such composites due to the injection of bulk and nano metals reveals that tensile strength and Young?s modulus of PVC nanocomposite sheets were notably increased with the increasing concentration of CuO and PbO nanoparticles. CuO nanocomposite showed the highest values of flexural strength, toughness, and tensile strength among all the fabricated nanocomposite sheets.

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“…For example, high energetic fast neutrons is slowed down by heavy elements through the process of inelastic scattering 2 . Intermediate energy neutrons can be moderated by elastic scattering with light elements such as hydrogen, while, thermal neutrons are absorbed by elements of high absorption cross section such as boron and cadmium 3 . On the other hand, γ-rays and X-rays can be attenuated by high dense elements with high atomic number such as lead, tungsten and bismuth.…”

Section: Introductionmentioning

confidence: 99%

Radiation shielding performance of metal oxides/EPDM rubber composites using Geant4 simulation and computational study

Alabsy

Elzaher

2023

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This paper aimed to evaluate the shielding performance of ethylene propylene diene monomer (EPDM) rubber composites filled with 200 phr of different metal oxides (either Al2O3, CuO, CdO, Gd2O3, or Bi2O3) as protective materials against gamma and neutron radiations. For this purpose, different shielding parameters, including the linear attenuation coefficient (μ), mass attenuation coefficient (μ/ρ), mean free path (MFP), half value layer (HVL), and tenth value layer (TVL), were calculated in the energy range between 0.015 and 15 MeV by using the Geant4 Monte Carlo simulation toolkit. The simulated μ/ρ values were validated by the XCOM software to examine the precision of the simulated results. The maximum relative deviation between the Geant4 simulation and XCOM was not greater than 1.41%, confirming the accuracy of the simulated results. Based on μ/ρ values, other significant shielding parameters such as effective atomic number (Zeff), effective electron density (Neff), equivalent atomic number (Zeq), and exposure buildup factor (EBF) were also computed to explore the potential usage of the proposed metal oxide/EPDM rubber composites as radiation protective materials. The study demonstrates that the gamma-radiation shielding performance of the proposed metal oxide/EPDM rubber composites are increasing in the order of EPDM < Al2O3/EPDM < CuO/EPDM < CdO/EPDM < Gd2O3/EPDM < Bi2O3/EPDM. Furthermore, three sudden increases in the shielding capability in some composites occur at 0.0267 MeV for CdO/EPDM, 0.0502 MeV for Gd2O3/EPDM, and 0.0905 MeV for Bi2O3/EPDM composites. This increase in the shielding performance is due to the K absorption edges of Cd, Gd, and Bi, respectively. Regarding the neutron shielding performance, the macroscopic effective removal cross-section for fast neutrons (ƩR) was evaluated for the investigated composites using MRCsC software. The highest ƩR is obtained for Al2O3/EPDM, while the lowest ƩR is obtained for EPDM rubber with no metal oxide content. According to the obtained results, the investigated metal oxide/EPDM rubber composites can be employed as comfortable clothing and gloves designed for workers in radiation facilities.

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Fast and thermal neutrons attenuation through micro-sized and nano-sized CdO reinforced HDPE composites

Cited by 29 publications

References 24 publications

Recycled high-density polyethylene plastic reinforced with ilmenite as a sustainable radiation shielding material

Recycled high-density polyethylene plastic reinforced with ilmenite as a sustainable radiation shielding material

Gamma attenuation through nano lead - nano copper PVC composites

Radiation shielding performance of metal oxides/EPDM rubber composites using Geant4 simulation and computational study

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