On the determination of electric field in atmospheric pressure DBD*

Precise knowledge of the electric field in discharges is the key for the quantification of the plasmochemical processes. In recent years, various methods of the electric field measurements were established or improved, adopting e. g. the simplest equivalent circuit model, the intensity ratio of emission lines, or electric field induced second harmonic generation (EFISH). Our goal is to test the robustness of these methods and their conformity on measurements of the atmospheric pressure Townsend discharge in pure nitrogen. The results of the time development of the electric field determined by all three methods will be compared and discussed.