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Cherenkov interaction and post-acceleration experiments of high brightness electron beams from a pseudospark discharge

Yin, H and Cross, A.W and Phelps, A.D.R and He, W and Ronald, K (2004) Cherenkov interaction and post-acceleration experiments of high brightness electron beams from a pseudospark discharge. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 528 (1-2). pp. 378-381. ISSN 0168-9002

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    A pseudospark-sourced electron beam has two phases, an initial hollow cathode phase (HCP) beam followed by a conductive phase (CP) beam. The beam brightness was measured by a field-free collimator to be 10^9 and 10^11 A (m*rad)^-2 for HCP beam and CP beam, respectively. The initial HCP beam from an eight-gap pseudospark discharge was applied in a Cherenkov interaction between the electron beam and the TM01 mode of a 60-cm long alumina-lined waveguide. While the CP beam from a three-gap pseudospark discharge chamber was propagated and post-accelerated from about 200 V to more than 40 kV.