Abstract
The conduction current Ic and the photocurrent Ip were measured in hydrocarbon liquids subjected to d.c. divergent fields. Space-charge limited currents were observed in clarified ionic carrier of both polarities produced by electron attachment. The linear relation between Ip and Ic indicated that molecules were excited by injected electrons before the attachment. In liquid methane in negative point electrode, Ip and Ic were reduced by a rise in pressure, giving evidence for the existence of gaseous bubbles during discharge. However in pentane and hexane, both currents were independent of pressure. The difference is probably caused by the bubble growth rate; the rate is probably larger in liquid methane.
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