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Calculation of radiation attenuation coefficients for shielding concretes
Faculty
Science
Year:
1997
Type of Publication:
Article
Pages:
1389-1401
Authors:
BASHTER, II
DOI:
10.1016/S0306-4549(97)00003-0
Journal:
ANNALS OF NUCLEAR ENERGY PERGAMON-ELSEVIER SCIENCE LTD
Volume:
24
Research Area:
Nuclear Science \& Technology
ISSN
ISI:A1997YB40400002
Keywords :
Calculation , radiation attenuation coefficients , shielding concretes
Abstract:
Theoretical calculations have been performed in order to obtain the mass attenuation coefficients and the linear attenuation coefficients at photon energies from 10 keV to 1 GeV for ordinary, hematite-serpentine, ilmenite-limonite, basalt-magnetite, ilmenite, steel-scrap and steel-magnetite concretes. The concrete densities ranged from 2.3 to 5.11gcm(-3). The calculated values of linear attenuation coefficients have been compared with those measured at gamma ray energies from 1.5 to 6 MeV for the concretes under investigation. Agreement between measured and calculated values has been obtained. Also, the fast neutron effective macroscopic removal cross-sections for the seven types of concrete have been calculated using the elemental composition of the mixes. Comparison between the measured and calculated effective removal cross-section values show a reasonable agreement for all types of concrete. Steel-magnetite concrete of high density (5.11gcm(-3)), and with constituents of relatively high atomic number, is an effective shield for both photons and neutrons. (C) 1997 Elsevier Science Ltd.
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