Conditions for non-stationary discharge initiation into "burning-through" mode

The special form of an electric discharge - "burn-through" in regard to the ball lightning problem has been considered. Having been carried out within closed volume, this mode of erosive discharge has shown the series of clear differences consisting in the high gas density, formation of the metal-polymer aerogel, the percolating current and unusual features of plasma's exhaust. The conditions for its stable origination and the main stages of the discharge process have been ascertained.