Total and Partial Cross Sections for the Interactions of Electromagnetic Radiation with Matter

Abstract

<p> A measurement of the cross section for the interaction of electromagnetic radiation with matter has been undertaken. Total cross sections for 29 photon energies from 121 keV to 10.8 MeV in 9 target elements from carbon to uranium have been realized and pair production cross sections, for energies above 2 MeV, deduced from the results. A direct measurement of the partial pair cross section for photons with energies from 1120 to 2754 keV in 6 target elements from titanium to lead has also been included.</p>