| _version_ |
1860800067681648640
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| building |
INTELEK Repository
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| collection |
Online Access
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| collectionurl |
https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection407072
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| date |
2020-07-29 03:10:40
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| eventvenue |
UKM, Bangi
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| format |
Restricted Document
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| id |
8521
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| institution |
UniSZA
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| originalfilename |
1928-01-FH03-FSK-20-39344.pdf
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| person |
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML
like Gecko) Chrome/83.0.4103.116 Safari/537.36
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| recordtype |
oai_dc
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| resourceurl |
https://intelek.unisza.edu.my/intelek/pages/view.php?ref=8521
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| spelling |
8521 https://intelek.unisza.edu.my/intelek/pages/view.php?ref=8521 https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection407072 Restricted Document Conference Conference Paper application/pdf 5 1.6 Adobe Acrobat Pro DC 20 Paper Capture Plug-in Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML like Gecko) Chrome/83.0.4103.116 Safari/537.36 2020-07-29 03:10:40 1928-01-FH03-FSK-20-39344.pdf UniSZA Private Access Study on the shielding materials for low-energy gamma sources Photon dosimetry is indispensable in designing an irradiation facilities shielding. Monte Carlo simulation was utilized to investigate the efficiency of relatively new developed clay and Gadolinum (Gd)-doped polymer as a radiation shielding material for low energy gamma sources (Am- and Co-). The calculated linear attenuation coefficient () of Am- and Co- for clay is higher within . % and . % compared to ordinary concrete, respectively. The value for Gd-doped polymer is higher by a factor of and compared to clay for Am- and Co-, respectively. A thickness of cm and cm from both clay and concrete were adequate to attenuate almost % incident photons from Am- and Co-, respectively. The same thickness of cm by Gd-doped polymer could attenuate almost % of Co- photons. cm thickness of clay and concrete could shield the gamma source dose rate of Am- ( MBq) down to . Sv/hr, while almost cm needed for Co- source. Gd-doped polymer with thickness of cm could shield almost % the dose rate from Co- source. For higher energy gamma sources, clay and ordinary concrete need to be doped with a higher Z element to ensure safety of the radiation. International Nuclear Science Technology and Engineering Conference 2019, iNuSTEC 2019 UKM, Bangi
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| spellingShingle |
Study on the shielding materials for low-energy gamma sources
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| summary |
Photon dosimetry is indispensable in designing an irradiation facilities shielding. Monte Carlo simulation was utilized to investigate the efficiency of relatively new developed clay and Gadolinum (Gd)-doped polymer as a radiation shielding material for low energy gamma sources (Am- and Co-). The calculated linear attenuation coefficient () of Am- and Co- for clay is higher within . % and . % compared to ordinary concrete, respectively. The value for Gd-doped polymer is higher by a factor of and compared to clay for Am- and Co-, respectively. A thickness of cm and cm from both clay and concrete were adequate to attenuate almost % incident photons from Am- and Co-, respectively. The same thickness of cm by Gd-doped polymer could attenuate almost % of Co- photons. cm thickness of clay and concrete could shield the gamma source dose rate of Am- ( MBq) down to . Sv/hr, while almost cm needed for Co- source. Gd-doped polymer with thickness of cm could shield almost % the dose rate from Co- source. For higher energy gamma sources, clay and ordinary concrete need to be doped with a higher Z element to ensure safety of the radiation.
|
| title |
Study on the shielding materials for low-energy gamma sources
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| title_full |
Study on the shielding materials for low-energy gamma sources
|
| title_fullStr |
Study on the shielding materials for low-energy gamma sources
|
| title_full_unstemmed |
Study on the shielding materials for low-energy gamma sources
|
| title_short |
Study on the shielding materials for low-energy gamma sources
|
| title_sort |
study on the shielding materials for low-energy gamma sources
|