Design and Development of a V-Band Backward-Wave Oscillator Based on the Pseudospark-Source Electron Gun

In recent years, there have been several trends in the development of promising high-power vacuum and plasma sources of sub-THz and THz radiation. Pseudospark-based electron guns are considered as one of the possible and promising sources of high-current electron beams, including high-aspect-ratio sheet beams.
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Among the advantages of the pseudospark discharge based hollow cathode electron guns, there are high achievable electron beam current and the absence of a focusing magnetic field owing to the ion focusing mechanism.