The large angle scattering of electrons in gases.—II

Abstract

The results of the investigation of the angular distributions of electrons scattered elastically and inelastically in helium, argon, and mercury vapour have been described in a previous paper. It was found that the inelastic angular distributions in mercury vapour and argon exhibited diffraction maxima and minima similar to those which appeared in the elastic angular distributions. Recently Tate and Palmer have investigated the elastic scattering in mercury vapour for angles of scattering between 5° and 125°, and the inelastic scattering (corresponding to a discrete energy loss) between 5° and 55°. Hughes and McMillen have measured the angular distributions of the elastic and inelastic scattering in hydrogen between 40° and 165°, and the elastic scattering in helium between 15° and 150°. These papers are also concerned with the large angle scattering of those electrons which make ionising collisions.