Improvement of PEA signal analysis using simulations for complex geometry samples

Complex geometry structures, such as produced by imperfections, cause the electric field to reach a very high local value even at low applied voltages. These are often the initiators of breakdown. Though direct measurement methods for space charge and electric field can be used only for planar or coaxial geometry, the authors propose to apply the pulsed-electro-acoustic (PEA) method to such complex geometry structures by using a simulation technique. The physical background of the simulation is presented. Comparisons between simulated and experimental signals are shown to be in good agreement meaning that simulations can be used as a tool for signal analysis.