Multiple Scattering of Electrons and Positrons

Abstract
Multiple scattering of 2650 electron and 1887 positron tracks was studied in nitrogen by cloud-chamber techniques. The theory of Williams with limiting angles due to Bethe best describes the multiple scattering of electrons and positrons in the momentum range between 1000 and 6000 G-cm. The theory of Molière is less satisfactory, underestimating the multiple scattering above 2000 G-cm by an appreciable amount.