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Investigation of Photon Radiation Attenuation Capability of Different Clay Materials

This work aims to experimentally report the radiation attenuation factors for four different clays (red, ball, kaolin and bentonite clays) at four selected energies (emitted from Am-241, Cs-137, and Co-60). The highest relative difference in the mass attenuation coefficient (MAC) is equal to −3.02%,...

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Autores principales: Elsafi, Mohamed, Koraim, Yousry, Almurayshid, Mansour, Almasoud, Fahad I, Sayyed, M. I., Saleh, I. H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588141/
https://www.ncbi.nlm.nih.gov/pubmed/34772229
http://dx.doi.org/10.3390/ma14216702
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author Elsafi, Mohamed
Koraim, Yousry
Almurayshid, Mansour
Almasoud, Fahad I
Sayyed, M. I.
Saleh, I. H.
author_facet Elsafi, Mohamed
Koraim, Yousry
Almurayshid, Mansour
Almasoud, Fahad I
Sayyed, M. I.
Saleh, I. H.
author_sort Elsafi, Mohamed
collection PubMed
description This work aims to experimentally report the radiation attenuation factors for four different clays (red, ball, kaolin and bentonite clays) at four selected energies (emitted from Am-241, Cs-137, and Co-60). The highest relative difference in the mass attenuation coefficient (MAC) is equal to −3.02%, but most of the other results are much smaller than this value, proving that the experimental and theoretical data greatly agree with each other. From the MAC results, the shielding abilities of the clay samples at 0.060 MeV follow the order of: bentonite > red > ball > kaolin. Thus, at low energies, the bentonite clay sample provides the most effective attenuation capability out of the tested clays. The half value layer (HVL) increases as energy increases, which suggests that, only a thin clay sample is needed to sufficiently absorb the radiation at low energies, while at higher energies a thicker sample is needed to shield the same amount of high energy radiated. Furthermore, bentonite clay has the lowest HVL, while the kaolin clay has the greatest HVL at all energies. The radiation protection efficiency (RPE) values at 0.060 MeV are equal to 97.982%, 97.137%, 94.242%, and 93.583% for bentonite clay, red clay, ball clay, and kaolin clay, respectively. This reveals that at this energy, the four clay samples can absorb almost all of the incoming photons, but the bentonite clay has the greatest attenuation capability at this energy, while kaolin clay has the lowest.
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spelling pubmed-85881412021-11-13 Investigation of Photon Radiation Attenuation Capability of Different Clay Materials Elsafi, Mohamed Koraim, Yousry Almurayshid, Mansour Almasoud, Fahad I Sayyed, M. I. Saleh, I. H. Materials (Basel) Article This work aims to experimentally report the radiation attenuation factors for four different clays (red, ball, kaolin and bentonite clays) at four selected energies (emitted from Am-241, Cs-137, and Co-60). The highest relative difference in the mass attenuation coefficient (MAC) is equal to −3.02%, but most of the other results are much smaller than this value, proving that the experimental and theoretical data greatly agree with each other. From the MAC results, the shielding abilities of the clay samples at 0.060 MeV follow the order of: bentonite > red > ball > kaolin. Thus, at low energies, the bentonite clay sample provides the most effective attenuation capability out of the tested clays. The half value layer (HVL) increases as energy increases, which suggests that, only a thin clay sample is needed to sufficiently absorb the radiation at low energies, while at higher energies a thicker sample is needed to shield the same amount of high energy radiated. Furthermore, bentonite clay has the lowest HVL, while the kaolin clay has the greatest HVL at all energies. The radiation protection efficiency (RPE) values at 0.060 MeV are equal to 97.982%, 97.137%, 94.242%, and 93.583% for bentonite clay, red clay, ball clay, and kaolin clay, respectively. This reveals that at this energy, the four clay samples can absorb almost all of the incoming photons, but the bentonite clay has the greatest attenuation capability at this energy, while kaolin clay has the lowest. MDPI 2021-11-07 /pmc/articles/PMC8588141/ /pubmed/34772229 http://dx.doi.org/10.3390/ma14216702 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Elsafi, Mohamed
Koraim, Yousry
Almurayshid, Mansour
Almasoud, Fahad I
Sayyed, M. I.
Saleh, I. H.
Investigation of Photon Radiation Attenuation Capability of Different Clay Materials
title Investigation of Photon Radiation Attenuation Capability of Different Clay Materials
title_full Investigation of Photon Radiation Attenuation Capability of Different Clay Materials
title_fullStr Investigation of Photon Radiation Attenuation Capability of Different Clay Materials
title_full_unstemmed Investigation of Photon Radiation Attenuation Capability of Different Clay Materials
title_short Investigation of Photon Radiation Attenuation Capability of Different Clay Materials
title_sort investigation of photon radiation attenuation capability of different clay materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8588141/
https://www.ncbi.nlm.nih.gov/pubmed/34772229
http://dx.doi.org/10.3390/ma14216702
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