Some consequences of the superposition of anomalous charging and discharging currents in dielectrics

Abstract

An analysis of the time dependence of the anomalous discharging current, which flows through a dielectric after it has been charged for a finite period of time, is carried out. The validity of thet ⁻ⁿ law for the anomalous charging current is assumed in the time interval under consideration, i.e. in times shorter than the mean relaxation time. It is shown that the shape of the log (anomalous discharging current) — log (time) curve for a charging periodt _c in this case is similar to that of the log (anomalous discharging current) — log (time) curve obtained after the infinite charging, if the mean relaxation time is neart _c . This fact may lead to a false interpretation of the experimental results. Corrections for the determination of the true magnitude and slope of the time dependent anomalous discharging current are given in the case of finite charging periods of time.