Generation and application of pseudospark-sourced electron beams

Cross, A.W. and Yin, H. and He, W. and Ronald, K. and Phelps, A.D.R. and Pitchford, L.C. (2007) Generation and application of pseudospark-sourced electron beams. Journal of Physics D: Applied Physics, 40 (7). pp. 1953-1956. ISSN 0022-3727 (

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A pseudospark (PS) discharge has been shown to be a promising source of high brightness, high intensity electron beam pulses. A PS-sourced electron beam has two phases, an initial hollow cathode phase (HCP) beam followed by a conductive phase (CP) beam. In our experiments, a 22 kV, 50A HCP beam of brightness 10(9-10) A m(-2) rad(-2) followed by a 200 V, 200 A CP beam of brightness 10(11-12) A m(-2) rad(-2) were measured. Experiments have been conducted with the application of a HCP beam in a Cherenkov interaction with no input seed wave and with post-acceleration of the CP beam. In this paper, a new Cherenkov interaction experiment with an input seed wave from a 20 kW, 35 GHz pulsed magnetron has been designed using the same PS HCP beam. Simulation results of the interaction will be presented and further PS electron beam applications will be discussed.