Utilization of barite/cement composites for gamma rays attenuation

Sakr, K.; Ramadan, Wageeh; Sayed, M. S.; El-Zakla, T.; El-Desouqy, Mohamed; El-Faramawy, Nabil

doi:10.1080/10420150.2018.1434520

Cited by 28 publications

(6 citation statements)

References 9 publications

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“…The mean free path, sometimes referred to as relaxation length (MFP), is the average excursion between two subsequent photon interactions and is represented by the formula 36 :

MFP = \frac{1}{normalμ} .

…”

Section: Methodsmentioning

confidence: 99%

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO₃ as gamma–ray radiation shielding materials for medical applications

Atta,

Abou‐Laila,

Abdelwahed

et al. 2023

Polymer Engineering & Sci

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Polyvinyl alcohol (PVA)/starch/graphene oxide nanocomposites containing different ratios of tungsten oxide (WO3) were prepared for use in the medical field as low‐cost, facile, eco‐friendly, and biodegradable low‐energy γ‐ray shielding materials. The effect of different WO3 loading (0, 2, 4, 8, and 12 wt%) on nanocomposites' structural, mechanical, and gamma attenuation properties was studied. X‐ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscope verified the incorporation of WO3 into the nanocomposite matrix. The thermal stability and activation energy of the decomposition of nanocomposites showed continuous improvement with increasing WO3. The maximum tensile strength and elongation of nanocomposites were achieved by incorporating 4 wt% WO3 compared to the lowest tensile strength and elongation at 8 and 12 wt% of WO3, respectively. The good filler distribution inside the polymeric matrix at lower filler loading compared to the creation of voids and agglomeration at higher filler levels explains this behavior. It was found that nanocomposites' calculated mass attenuation coefficient μm (cm2/g) increased with increasing WO3 at different photon energies. Half‐value layer (HVL) and tenth‐value layer (TVL) values fall as WO3 concentration rises. The sample with 12 wt% of WO3 exhibits lower HVL and TVL values and higher μm, demonstrating a more remarkable gamma attenuation ability. Such results endorsed the prepared nanocomposites as low energy γ‐rays attenuation materials in medical fields.Highlights PVA/starch/graphene oxide nanocomposites with different WO3s were fabricated as shielding materials. The impact of WO3 on nanocomposites' mechanical and shielding characteristics was studied Thermal stability of nanocomposites showed continuous improvement with increasing WO3 μm increased with continuously increasing WO3 at different photon energies.

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“…The mean free path, sometimes referred to as relaxation length (MFP), is the average excursion between two subsequent photon interactions and is represented by the formula 36 :

MFP = \frac{1}{normalμ} .

…”

Section: Methodsmentioning

confidence: 99%

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO₃ as gamma–ray radiation shielding materials for medical applications

Atta,

Abou‐Laila,

Abdelwahed

et al. 2023

Polymer Engineering & Sci

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“…As a result, knowing its exact value will assist in a variety of professions [5]. Many materials have been developed for shielding different radiations, including concrete [10,11], polymer composites [7], glass [12], serpentine (Mg3Si2O5 (OH)4) [13], hematite (Fe2O3), and barite (BaSO4) minerals [14]. In addition, a new form of concrete with improved radiation shielding properties was developed.…”

Section: Introductionmentioning

confidence: 99%

Radiation Attenuation Properties of BaMnO3 Doping Nickel Semiconductor Perovskite Using Phys-X/PSD Software

Ghozza

2023

Arab Journal of Nuclear Sciences and Applications

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This research is focused on the effect of the nickel doping ratio on γ-ray attenuation radiological parameters for five compounds of chemical compositions BaMn1-xNixO3 (x=0.1,0.3,0.5,0, and 0.9), named Ni1, Ni3, Ni5, Ni7, and Ni9, in energy range between 0.015 and 15 MeV utilizing Phy-X/PSD software. Radiation parameters (MAC, LAC, HVL, TVL, MFP, ACS, ECS, Zeff, Neff, Ceff, Zeq, EBF, and EABF) are evaluated. Most of parameters depend profoundly on the photon energy. For instance, MAC is reduced from 137 to 0.133 cm 2 /g and LAC is increased from 775.7 to 0.75 cm -1 with increasing Eph (0.015 -15 MeV). Additionally, HVL and TVL increase from 0.0009 to 0.9 and from 0.003 to 3 cm respectively in between that energy range. Also, MFP increases from 0.001 to 1.3 cm but Neff, Ceff, Zeff , ACS, and ECS, decrease from 4×10 24 -2×10 24 , 1.6×10 10 -0.7×10 10 , 32 -15 electron/g, 100×10 -24 -1×10 -24 , and 3.3×10 -23 -0.007×10 -23 cm 2 /g at the energy 0.015-15 MeV. Furthermore, Zeq value is 19.3. Additionally, the exposure and energy absorption buildup factors (EBF and EABF) are determined to be 1-1.2, 2.7-29, 1.3-1.7, and 3.15-22 at various penetration depths (1-40 mfp). These values are independence of Eph at low mfp but at 40 mfp they are changed from 3to29. Maximum buildup parameters site in middle energy range, 0.2-1MeV. In another side, Most of such parameters are dependent on the Ni dopants. FNRCS values are 0.85 cm -1 . The present samples exhibit greater radiological properties than that published previously. These investigations are critical for the development of utilized semiconductor as detectors, attenuators, and protection radiation in various radiation safety applications fields.

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“…In recent decades, nuclear physicists, engineers, and geologists have developed many minerals and rock-forming materials to attenuate such radiation. These materials are widely used as aggregates or as additives incorporated into concrete, mortar, glass, and polymers [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Although concrete is the most prevalent material used to mitigate natural disasters [24] and man-made radiation leakages, a recent trend has occurred with respect to the exploitation of such minerals as native materials (in their original state, without their embedding as aggregates or additives in concrete, composites, or polymers), replacing concrete and cement pastes [25].…”

Section: Introductionmentioning

confidence: 99%

Deep Insights into the Radiation Shielding Features of Heavy Minerals in Their Native Status: Implications for Their Physical, Mineralogical, Geochemical, and Morphological Properties

et al. 2022

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Barite and hematite are the most common heavy-weight minerals applied as aggregates in radiation shielding concrete (RSC). Therefore, to limit the cement consumption and reduce the CO2 emissions its production, the aim of this study is to use Egyptian barite and hematite minerals in their native status and evaluate their attenuation efficiency against fast neutrons and γ-rays. This was implemented through the measurement of their radiation attenuation against fast neutrons and γ-rays in the energy ranges of 0.80–11 and 0.40–8.30 MeV, respectively, employing a Pu-Be source and a stilbene scintillator. Theoretical calculations were prepared using the NXcom program to validate the fast neutron attenuation measurements. Furthermore, the implications of the physical, mineralogical, geochemical, and morphological characteristics of these heavy-weight minerals with respect to their attenuation efficiencies were considered. We found that barite has superior radiation attenuation efficiency for fast neutrons and γ-rays compared to hematite by 9.17 and 51% for fast neutrons and γ-rays, respectively. This was ascribed to the superior physical, mineralogical, geochemical, and morphological properties of the former relative to those of the latter. Furthermore, a satisfactory agreement between the experimental and theoretical results was achieved, with a deviation of 16 and 19.25% for the barite and hematite samples, respectively. Eventually, barite and hematite can be successful candidates for their use as sustainable alternatives to common RSC.

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Utilization of barite/cement composites for gamma rays attenuation

Cited by 28 publications

References 9 publications

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO₃ as gamma–ray radiation shielding materials for medical applications

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO₃ as gamma–ray radiation shielding materials for medical applications

Radiation Attenuation Properties of BaMnO3 Doping Nickel Semiconductor Perovskite Using Phys-X/PSD Software

Deep Insights into the Radiation Shielding Features of Heavy Minerals in Their Native Status: Implications for Their Physical, Mineralogical, Geochemical, and Morphological Properties

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Utilization of barite/cement composites for gamma rays attenuation

Cited by 28 publications

References 9 publications

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO3 as gamma–ray radiation shielding materials for medical applications

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO3 as gamma–ray radiation shielding materials for medical applications

Radiation Attenuation Properties of BaMnO3 Doping Nickel Semiconductor Perovskite Using Phys-X/PSD Software

Deep Insights into the Radiation Shielding Features of Heavy Minerals in Their Native Status: Implications for Their Physical, Mineralogical, Geochemical, and Morphological Properties

Contact Info

Product

Resources

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Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO₃ as gamma–ray radiation shielding materials for medical applications

Structural, mechanical, and thermal features of PVA/starch/graphene oxide nanocomposite enriched with WO₃ as gamma–ray radiation shielding materials for medical applications