Charge scavenging in non-polar liquid studied by electrical conductivity measurement

Radiation-induced electrical conductivity in n-hexane has been measured as a function of the concentration of charge scavenger of low diffusion constant, such as 1,2-benzanthracene, 1,2-benzphenanthrene, pyrene and naphthacene. With increasing scavenger concentration, a gradual decrease of relative electrical conductivity, down to an individual value corresponding to each scavenger, has been observed. This is interpreted as implying that both negative and positive charge carriers, or free ions, are reactive entities throughout their life time. The charge scavenging efficiencies have been found to lie in the following order; 1,2-benzanthracene = 1,2-benzphenanthrene < pyrene < naphthacene.