On deviations from theory of electron-atom elastic scattering cross sections

► Critical study of reported e-scattering deviations from the Rutherford Z2 relation. ► Gas mixture samples of H2/D2, H2/He, H2/Ar, D2/Ar, and He/Ar. ► About 2.25 keV incident electron energy, 100° scattering angle. ► The conclusion is that the reported deviations are instrumental in nature.