Time dependence of internal discharges in a rtificial voids

The authors have noted that a deformation occurs in an artificial void during deterioration life testing. The deformation suggests that there is a pressure change in the void and the pressure change results in a variation in the discharge processes in the void. We have studied this problem with a large artificial void in order to measure the volumetric change of the gases in the Void, to observe the optical characteristics of the discharge, and also to observe the change in the distribution of discharge magnitudes in the void during test. We have also analyzed the void discharge phenomena using an equivalent circuit.