Abstract: The oscillograph tests the surge waveform of the first order discharge loops of the alternating current arc generator. Nanosecond pulsed waveform is observed in the main surge waveform. Experimental and analytical methods have been adopted in the study of the nanosecond pulsed waveform, which are supposed to provide a new experimental approach in the studies of nanosecond pulse in gas discharge.

Key words: gas discharge, nanosecond pulsed waveform, development of electric current