Dynamic processes in helical electron beams in gyrotrons |
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Authors: | O I Louksha D B Samsonov G G Sominskii S V Semin |
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Institution: | 1220. St. Petersburg State Polytechnical University, St. Petersburg, 195251, Russia
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Abstract: | The results of theoretical and experimental studies of collective processes in helical electron beams in gyrotron-type devices are generalized. Main attention is paid to low-frequency oscillations associated with the development of instability in the space charge trapped between the cathode and the magnetic mirror. The mechanism of evolution of instability is substantiated and the effect of oscillations on the main parameters of the electron flow determining its quality is analyzed. Data on the suppression of low-frequency oscillations and resulting enhancement of the gyrotron efficiency are considered. |
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