Investigation of Space-Time Structure of the Discharge with an   Electrolytic Anode and Face-Type, Air Half-Space Directed Cathode (Gatchina's   Discharge)
  Despite of its limited capabilities for ball-lightning modeling, the chemically active dust plasma of electric discharges is a very interesting physical object. Gatchina's discharge, which gives a possibility to study the dust-gas fireball, represents a complex non-stationary process, combining the creation and the destruction of relatively long-living high-enthalpy microscopic states with non-ideal dust plasma and with a gas-dynamic form, resulting in appearance of a spherical luminous object. In the present work we studied spatial structure of the discharge and its dynamics with the help of electric and optical measurements. 
S. E. Emelin, A. M. Astafiev, A. L. Pirozerski