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This paper presents the results of an experimental study of a relativistic traveling wave oscillator with a tubular electron beam of enlarged cross section. Repetitively pulsed (30 Hz) generation of 10.1-GHz, 80-ns microwave pulses in 1-s batches is realized. The microwave pulse power a level of quasi-steady-state oscillation was 220 ± 44 MW. The driving electron beam (370-keV, 2.4-kA, 107-ns pulsewidth)...
A two-dimensional finite-difference time-domain method with uniaxial perfectly matched layers was applied to analysis of a three-layer wide-aperture microwave calorimeter. The method was shown to be an efficient tool for calculating the optimum geometric parameters of a semi-infinite model dummy load. Using the time-domain results, the frequency-dependent transmission/reflection coefficients of the...
The paper presents numerical and experimental studies of the resonant relativistic BWO. By using reflections of the operating TM01 wave from edges of the electrodynamic system, optimum conditions for electron beam interaction with both (−1st) and fundamental harmonics of the wave are achieved. In experiment, 5 GW, 3.6 GHz microwave pulses with 30 % power efficiency were produced.
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