Mass attenuation coefficients of X-rays in different barite concrete used in radiation protection as shielding against ionizing radiation
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Radiation Physics and Chemistry
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The probability of a photon interacting in a particular way with a given material, per unit path length, is usually
called the linear attenuation coefficient (μ), and it is of great importance in radiation shielding. Plates of barite
concrete with different thickness were fabricated in order to determining their mass attenuation coefficients at
different energies. The plates were irradiated with ISO X-ray beams (N60, N80, N110 and N150), generated by
Pantak HF320 X-ray equipment, at the IPEN laboratory. The mass attenuation coefficients of barite concrete
have been measured using X-ray attenuation for different thicknesses of barite concrete qualities of the ISO. The
attenuator material issued from different regions of Brazil. The experimental procedure in this research was
validated by comparison between the experimental measurements of mass attenuation coefficients and
coefficients determined by the same atomic composition, using as a tool to XCOM. The highest value of (μ/
ρ) found experimentally was in the energy of 48 keV, in ISO 60 N quality, being 1.32( ± 0.49) for purple barite;
1.47( ± 0.41) for white barite and 1.75( ± 0.41) for cream barite. The determination of the chemical composition
of the barite samples was of fundamental importance for the characterization of these materials. It can be seen
that both calculated and measured data for the linear attenuation coefficients increase with the increasing
materials density, as it is expected. It can be concluded that the photon attenuation coefficients depends on the
photon energy and the materials density is the main contribution to the photon attenuation coefficients, which is
important for radiation shielding.
Como referenciar
ALMEIDA JUNIOR, T.A.; NOGUEIRA, M.S.; VIVOLO, V.; POTIENS, M.P.A.; CAMPOS, L.L. Mass attenuation coefficients of X-rays in different barite concrete used in radiation protection as shielding against ionizing radiation. Radiation Physics and Chemistry, v. 140, p. 349-354, 2017. DOI: 10.1016/j.radphyschem.2017.02.054. Disponível em: http://repositorio.ipen.br/handle/123456789/27727. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.