Compact high-power subnanosecond repetitive-pulse generators

This review presents the results of investigations, design work, and tests of generators of subnanosecond pulses with amplitudes exceeding 100 kV. The se generators were developed at the Institute of Electrophysics on the basi s of compact nanosecond repetitive-pulse RADAN generators. Relatively long pulses (2-5 ns) were transformed into shorter ones (down to 150-200 ps) wit h the use of systems based on high-pressure sharpening and cutting gas spar k gaps. This ensured stable operating modes for the generators at repetitio n frequencies of up to 100 Hz. Such spark gaps were utilized in systems of additional energy compression for enhancing the peak power of output subnan osecond pulses, as well as in devices producing high-power bipolar pulses. Some applications of short (<1 ns) powerful voltage pulses are considered.