Tables and graphs of the photon mass attenuation coefficient μ/ρ and the mass energy-absorption coefficient μen/ρ are presented for all of the elements Z = 1 to 92, and for 48 compounds and mixtures of radiological interest. The tables cover energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV. The μ/ρ values are taken from the current photon interaction database at the National Institute of Standards and Technology, and the μen/ρ values are based on the new calculations by Seltzer described in Radiation Research 136, 147 (1993). These tables of μ/ρ and μen/ρ replace and extend the tables given by Hubbell in the International Journal of Applied Radiation and Isotopes 33, 1269 (1982).
X-Ray Mass Attenuation Coefficients Table 1. Material constants for elemental media. Table 2. Material constants and composition for compounds and mixtures.
Values of the mass attenuation coefficient and the mass energy-absorption coefficient as a function of photon energy, for: Table 3.[Data] elemental media. Table 4.[Data] compounds and mixtures.
U.S. DEPARTMENT OF COMMERCE - Mickey Kantor, Secretary Technology Administration - Mary L. Good, Under Secretary for Technology National Institute of Standards and Technology - Arati Prabhakar, Director