On the Cross Sections ofCl2andN2for Slow Electrons

Abstract

Measurements of total cross section for collision of slow electrons between 2 and 40 volts have been carried out in ${\mathrm{N}}_2$ and ${\mathrm{Cl}}_2$ by use of a Brode type apparatus. The results for ${\mathrm{N}}_2$ compare well with those of previous investigators and with the theory of elastic scattering. The cross section of ${\mathrm{Cl}}_2$ is of order 2000 sq. atomic units with a maximum at $2.65\surd V$, the curve being similar to those for Na, K, Cs and Rb. Application of the theory of elastic scattering indicates that only a small portion of these collisions can be elastic.