Total X-Ray Attenuation Coefficients from 40 kev to 412 kev

The total attenuation coefficients for a variety of materials have been measured in the energy range between 40 and 412 kev. The unique angular and energy resolution of the DuMond curved crystal spectrometer were employed in the analysis of the scattered radiation. While the results are in general agreement with earlier tabulations at energies above the K-absorption edge, the present values are higher than most earlier estimates at energies below the K edge.