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- W2079349418 abstract "A novel parameterization of x-ray interaction cross-sections is developed, and employed to describe the x-ray linear attenuation coefficient and mass energy absorption coefficient for both elements and mixtures. The new parameterization scheme addresses the Z-dependence of elemental cross-sections (per electron) using a simple function of atomic number, Z. This obviates the need for a complicated mathematical formalism. Energy dependent coefficients describe the Z-direction curvature of the cross-sections. The composition dependent quantities are the electron density and statistical moments describing the elemental distribution. We show that it is possible to describe elemental cross-sections for the entire periodic table and at energies above the K-edge (from 6 keV to 125 MeV), with an accuracy of better than 2% using a parameterization containing not more than five coefficients. For the biologically important elements 1 ⩽ Z ⩽ 20, and the energy range 30–150 keV, the parameterization utilizes four coefficients. At higher energies, the parameterization uses fewer coefficients with only two coefficients needed at megavoltage energies." @default.
- W2079349418 created "2016-06-24" @default.
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- W2079349418 date "2004-01-05" @default.
- W2079349418 modified "2023-10-11" @default.
- W2079349418 title "A parameterization scheme for the x-ray linear attenuation coefficient and energy absorption coefficient" @default.
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- W2079349418 doi "https://doi.org/10.1088/0031-9155/49/2/009" @default.
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