Comparison of Compton and Rayleigh Scattering at 145 KeV

摘要

Differential cross sections for Rayleigh and Compton scattering of 145 KeV gamma rays by Cu, Cd and Pb have been measured from 25 exp 0 to 80 exp 0 . The ratio of these cross sections, which can be determined with higher precision than absolute values, is given. The experimental cross sections are complemented with earlier results and compared with the theories of the relativistic and modified form factor and the incoherent scattering function. Agreement exists for the Compton cross section and scattering function theory showing the influence of the binding energy of the electrons. The Rayleigh differential cross sections are found to be lower than the results of the relativistic form factor theory, but agree with modified form factor calculations, which are nearly equal in this case to the results of second order pertubation theory. (Atomindex citation 15:005079)