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Relativistic Cherenkov Microwave Oscillator Without a Guiding Magnetic Field for the Electron-Beam Energy of 0.5 MeV

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3 Author(s)
Totmeninov, E.M. ; Inst. of High Current Electron., SB Russian Acad. of Sci., Tomsk, Russia ; Klimov, A.I. ; Rostov, V.V.

The feasibility of a relativistic Cherenkov microwave oscillator with no magnetic field for an electron-beam energy of ~0.5 MeV is studied. The oscillator geometry, with an efficiency of electron-beam power conversion to microwave radiation of ~20%, is simulated. The estimated radiation power is 400 MW. In the experiment, stable oscillation with ~6% efficiency is realized, taking into account the total current of a planar diode producing the electron beam. The microwave peak power for the operating TM01 wave was 140 ± 30 MW at 3.82 GHz.

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Plasma Science, IEEE Transactions on  (Volume:38 ,  Issue: 10 )