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Pseudospark sourced beam-wave interaction experiments

By: Yin, H.; Cross, A.W.; Robertson, C.W.; Whyte, C.G.; Ronald, K.; Phelps, A.D.R.; He, W.;

2007 / IEEE / 978-1-4244-1438-3


This item was taken from the IEEE Conference ' Pseudospark sourced beam-wave interaction experiments ' A pseudospark (PS) discharge has been shown to be a promising source of high quality, high intensity electron and ion beam pulses. A PS electron beam is ideal to drive high frequency radiation generators in the W-band (75GHz to 110GHz) due to its small beam size and the compactness of the device. This paper will present experimental results of the production of pseudospark-sourced electron beams from a 14-gap pseudospark discharge powered by a pulsed power system (a cable pulser) capable of producing 120ns duration and 180kV voltage pulses. Interaction between the electron beam and a W-band backward slow wave structure has been simulated using the Particle-In-Cell code MAGIC. High power radiation in the W-band frequency range was predicted. Microwave pulses were successfully detected from the experiment.