Measurement of differential scattering cross section of NaI for 59.6 keV gamma rays

Abstract Scattering of 59.6 keV γ-rays of 241 Am from sodium iodide, aluminium and copper have been determined for scattering angles between 24 and 144°. Differential coherent plus incoherent scattering cross section values for copper have been obtained theoretically, by means of form factor and scattering function calculations. Comparing the experimental data with the theoretical cross section values for copper, the experimental arrangement has been calibrated for each scattering angle. So, absolute values of differential cross section of sodium iodide for 59.6 keV γ-rays for eleven scattering angles have been obtained.