Performance of high-power gas-flow spark gaps

Results of an experimental investigation of the performance of repetitively pulsed gas flow spark gaps are presented. Interelectrode gas flow velocity and turbulence levels have been documented using pitot and hot wire probes while transient arc debris behavior has been studied using schlieren optical techniques. Typical electrical recovery curves are presented at various gas velocities. Analysis of the recovery, flow, and optical diagnostic data has led to the development of a simple model for the recovery of a spark gap with gas flow.