Excess electrons and positive charge carriers in liquid ethane

Abstract

Measurements of excess electron drift velocity as a function of the electric field were carried out up to field strengths of 280 kV/cm at temperatures from 111 to 216°K. Low field mobilities were obtained and at higher field strength the drift velocity increased more than proportionally with the field. The data are discussed on the basis of the trapping model, and thermally activated hopping is assumed for the motion. The jumping length as a function of the temperature was obtained from the high field data. The positive charge carrier seems to be of ionic nature and the mobility follows Walden's rule.