Scattering of Fast Electrons in Helium

Abstract

Failure of the quantum mechanical theory of elastic scattering to account for experimental results of Kuper on scattering of 50- to 80-kilovolt electrons in helium has been explained by neglect of the inelastic scattering. Computation of the cross sections including inelastic as well as elastic collisions by an approximate method yields satisfactory agreement without requiring any modification of the theory.