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Relativistic Cherenkov Microwave Oscillator Without a Guiding Magnetic Field
2009 / IEEE
This item was taken from the IEEE Periodical ' Relativistic Cherenkov Microwave Oscillator Without a Guiding Magnetic Field ' In this paper, microwave oscillation in which an electromagnetic wave and a continuous cylindrical relativistic electron beam (REB) with no magnetic field are in Cherenkov synchronism was studied. Analytical estimates of the beam-transport length were given, and analysis of the effect of electron-beam premodulation on the oscillator starting current and linear efficiency was made. Using numerical simulation, the oscillator geometry with a slow wave structure of length about three times the wavelength and with an efficiency of 30%-44% was determined. In experiment, the transport of a continuous cylindrical high-current REB over a distance about two times greater than the drift-tube diameter was demonstrated. Stable oscillation with ap 10% efficiency was obtained, taking into account the total current of a planar diode producing the electron beam. The microwave peak power for the operating TM01 mode was 1.3 plusmn 0.3 GW at 4.03 GHz.
Relativistic Cherenkov Microwave Oscillator
Continuous Cylindrical Relativistic Electron Beam
Relativistic Cherenkov Oscillator Without A Guiding Magnetic Field
Continuous Cylindrical Electron Beam
Relativistic Electron Beams
Engineered Materials, Dielectrics And Plasmas