X-Ray Scattering Coefficient as a Function of Wave-Length and Atomic Number

The mass scattering coefficients for Au, Sn, Ag, Fe, and C were compared with those of Al for wave-lengths between λ=0.48A and λ=1.09A by collecting the scattered radiation in an ionization chamber surrounding the scatterer on one side. The primary beam consisted of characteristic fluorescence radiation excited in radiators of Sn, Ag, Mo, and Se by a water-cooled tungsten tube. The ratios obtained are shown in the table.With Hewlett's measurement of the absolute value of the mass scattering coefficient of carbon these ratios can be transformed into absolute scattering coefficients.