On the direct production of an electron pair by a high energy α-particle

Abstract

A track of a primary alpha -particle from a jet 0 + 14 alpha in an I- stack was 12.49 cm long (from edge of stack to jet). At 10.82 cm an interaction occurred in which two minimum ionizing particles were produced. The energies of these two particles were determined by relative scattering measurements. It is concluded through probability calculatlons that direct production of an electron pair by the high energy in the electric field of a nucleon of the emulsion took place. (C.J.G.)