title: Voltage, energy, and material dependence of secondary radiation.
abstract: Measurement results of the relative contribution of primary and secondary radiation are presented. Measurements were done with both monoenergetic and broad spectrum x-ray beams. A variety of phantoms were used: graphite, water, lucite, a skull phantom, and aluminum. We found that the primary radiation fraction is nearly independent of photon energy and tube potential. Calculations using a simple single Compton scattering model agree with the experiment results.
mesh_terms: D000535:Aluminum; D006108:Graphite; D008961:Models, Structural; D008962:Models, Theoretical; D055585:Physical Phenomena; D010825:Physics; D011839:Radiation, Ionizing; D012542:Scattering, Radiation; D014965:X-Rays
chemical_list: D006108:Graphite; D000535:Aluminum