Physical Review Letters · 1974 · 176 citations · 10 references
Natural SciencesElectrical EngineeringMicrowave EngineeringPlasma PhysicsRadiation PhysicsAccelerator PhysicsElectromagnetic WavesElectron Beam PhysicsRelativistic ElectrodynamicsElectromagnetic Energy TransferElectron AcceleratorsEnergy Conversion EfficiencyPulsed Electron BeamsRelativistic Electron BeamsSpace Charge Distribution
Extremely high-power microwave emission is generated when a pulsed relativistic electron beam propagates down the axis of a corrugated-wall wave guide. The radiation occurs at a frequency such that the phase velocities of the negative-energy space charge wave on the beam and a low-order TM mode in the wave guide are equal. Power levels of 500 MW are generated. The conversion efficiency of electron energy into electromagnetic energy radiation is 17%.
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