DRIFT VELOCITY OF ELECTRONS IN CARBON DIOXIDE AT TEMPERATURES BETWEEN 193 AND 573 K.

Abstract

The drift velocity of electrons in carbon dioxide has been measured at gas temperatures ranging from 193 to 573 K and at E/N values up to 20 Td at 193 K, 50 Td at 293 K and 40 Td at 573 K. The measured drift velocities were found to decrease linearly with increasing gas number density at a given value of E/N for gas temperatures less than 293 K. This dependence has been attributed to multiple scattering and the data have been extrapolated to zeronumber density to correct for this effect. Comparisons are made with previous measurements where available. These results are relevant to carbon dioxide lasers.