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Plasma Cathode for a Short-Pulse Dielectric Wall Accelerator

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9 Author(s)
Harris, J.R. ; Lawrence Livermore Nat. Lab., Livermore, CA ; Hickman, B. ; Anaya, R. ; Cook, E.G.
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The Beam Research Program at Lawrence Livermore National Laboratory is continuing development of the dielectric wall accelerator (DWA), a type of accelerator which uses stacked pulse-forming lines (PFLs) to apply an accelerating field directly to the beam through a nonconducting vacuum boundary. Here, we report operation of a DWA as an electron diode using a surface flashover plasma cathode. Peak perveances in excess of 6 times 10-6A/V3/2 were measured, with current extraction and pulse train format depending on flashover source timing and PFL switching speed.

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Plasma Science, IEEE Transactions on  (Volume:37 ,  Issue: 6 )