"The MAC is defined as the linear attenuation coefficient (μ) divided by the density (ρ) of the material, and it is expressed in cm2/g."
"Calculations for Compounds and MixturesThe MAC of composite materials—such as biological tissues, polymers, or alloys—can be determined by weighting the mass attenuation coefficients of individual components according to their mass fractions."
"Calculations for Compounds and MixturesThe MAC of composite materials—such as biological tissues, polymers, or alloys—can be determined by weighting the mass attenuation coefficients of individual components according to their mass fractions."
"The mass attenuation coefficient (MAC) is a quantity used in calculations involving the penetration and energy deposition of photons (such as X-rays and gamma rays) in various materials, including biological tissues and shielding substances."
"This value represents the probability per unit mass that an X-ray or gamma photon will interact with a material via photoelectric absorption, Compton scattering, or pair production."
"MAC vs. Linear Attenuation Coefficient in ShieldingWhile MAC is fundamental for theoretical modeling, for practical X-ray shielding and beam hardening calculations, the half-value layer (HVL) is more straightforward."
"It is closely related but not the same value as mass energy-absorption coefficient (μen/ρ), which excludes energy carried away by scattered photons."
"Comparability of attenuation across different photon energies and different substancesUnlike the linear attenuation coefficient (μ), which depends on density, MAC is normalised to the material's mass. This allows direct comparison of attenuation characteristics across different substances. For example, a given element (e.g., lead) will have the same MAC whether it is in pure form, alloyed, or part of a compound."
"Calculations for Compounds and MixturesThe MAC of composite materials—such as biological tissues, polymers, or alloys—can be determined by weighting the mass attenuation coefficients of individual components according to their mass fractions."
"Use in Medical Imaging and Radiation ShieldingThe MAC plays a key role in various medical physics calculations including:"
"MAC vs. Linear Attenuation Coefficient in ShieldingWhile MAC is fundamental for theoretical modeling, for practical X-ray shielding and beam hardening calculations, the half-value layer (HVL) is more straightforward."
"Radiation shielding design"
"Beer-Lambert law"
"MAC vs. Linear Attenuation Coefficient in ShieldingWhile MAC is fundamental for theoretical modeling, for practical X-ray shielding and beam hardening calculations, the half-value layer (HVL) is more straightforward."
Expected headings
"Definition"
"Applications"