Pseudospark sourced beam-wave interaction experiments

Cross, A.W. and Yin, H. and He, W. and Phelps, A.D.R. and Ronald, K. and Whyte, C.G. and Robertson, C.W. IEEE , ed. (2007) Pseudospark sourced beam-wave interaction experiments. In: Joint 32nd International Conference on Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics, 2007-09-02 - 2007-09-09. (http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arn...)

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Abstract

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 (75 GHz to 110 GHz) 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 120 ns duration and 180 kV 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.