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The split-cavity oscillator: a high-power E-beam modulator and microwave source

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6 Author(s)
Marder, B.M. ; Sandia Nat. Lab., Albuquerque, NM, USA ; Clark, M.C. ; Bacon, L.D. ; Hoffman, J.M.
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A compact device, called a split-cavity oscillator, whose self-excited oscillating electromagnetic field converts a large-area steady electron beam into one that is highly density modulated, is described. It does this in a short beam travel length, easing both space-charge and pinching limitations. Thus, high currents are possible without requiring a magnetic guide field. Methods for converting the modulated output beam into high-power microwaves are discussed, as are ways to phase-lock several oscillators together. Analytic theory, numerical simulations, and experiments describing the device are presented

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Plasma Science, IEEE Transactions on  (Volume:20 ,  Issue: 3 )