Spark gaps for EMP and SREMP pulsers

The breakdown of almost uniform field spark gaps is described. An extrapolation of published uniform field spark breakdown of SF6 and air is presented. Pulse over-volted dark and illuminated spark gaps are described. Electric field enhanced triggered 3 electrode spark gaps are described. Examples of series injection triggered 2 electrode switches that are used in EMP pulsers and in SREMP pulsers are presented. A low voltage, high current, direct drive EMP pulser with a unique triggering system is described Some early EMP pulsers are presented. Fast risetime EMP pulsers that produce high voltage pulses into an antenna load are presented.