Reserching pressure vawe from the electrodischarge in water

In the electrodischarge technology of materials process which use electro burst phenomenon in liquids or solids the working tool is expanding discharge channel from pulsed breakdown [1]. Plasma channel in water is made by electrical breakdown of interelectrode gap or electro burst wire and following breakdown of burst products (vapors of water and metal) in the gap. The first approach requires high amplitude of voltage pulse and the second one needs high amplitude of current pulse.