Incoherent scattering of 279, 322, 662 and 1115 keV gamma rays in Cu, Sn and Pb

The differential incoherent scattering cross sections of 279 and 322 keV photons in copper, tin and lead were experimentally determined at different angles ranging from 10-120 degrees by the method of Shivaramu, Gopal and Sanjeevaiah (see ibid., vol.11, p.1123 (1978)). The cross sections of 662 and 1115 keV photons were also experimentally determined in copper, tin and lead using a cone geometry between 3 and 8 degrees . The incoherent scattering functions derived from the experimental results agree fairly well with the values calculated by Cromer (see J. Chem. Phys., vol.50, p.4857 (1969)) on the basis of SCF Hartree-Fock wavefunctions