Pulse radiolysis studies of aromatic liquids. Part 1.—Electrons and negative ions

Abstract

Pulse radiolysis studies of the aromatic liquids benzene, toluene and o-xylene have been carried out using a time-resolved conductivity detection technique. The observed transient ion currents are consistent with the immediate formation of highly mobile electrons together with slowly moving cations. The electrons decay either by ion recombination, or by reaction with residual impurity or added solutes. Rate constants for electron–solute interactions have been measured, as have G-values of electrons which escape the coulombic field of the parent ion. The effect of high concentrations of electron scavengers have been interpreted in terms of capture of epithermal electrons.