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X-Ray attenuation & absorption calculator. Caculations are based on the NIST data for X-ray interaction cross sections and material densities. Code: G. Weber Web Interface: G. Weber Suggestions and comments are welcome!
Linear Attenuation Coefficients. Table of Linear Attenuation Coefficients (in cm-1) for different materials at photon energies of 100, 200, and 500 keV.
Linear attenuation coefficient (µ) is a constant that describes the fraction of attenuated incident photons in a monoenergetic beam per unit thickness of a material 1. It includes all possible interactions including coherent scatter, Compton scatter and photoelectric effect 1.
The tables on the NIST website cover energies of photons (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV. A mass attenuation coefficient can easily be converted to a linear attenuation coefficient as discussed below.
The linear attenuation coefficient, attenuation coefficient, or narrow-beam attenuation coefficient characterizes how easily a volume of material can be penetrated by a beam of light, sound, particles, or other energy or matter. [1]
The linear attenuation coefficient, µ, can be separated in two pieces in order to see how x-ray absorption depends on density of material. The linear attenuation coefficientis separated into the mass attenuation coefficient µ/ρ and the density ρ.
4 cze 2009 · This database can be used to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as total attenuation coefficients, in any element, compound or mixture, at energies from 1 keV to 100 GeV.
