Abstract
We develop a thermionic-emission electron-optical system forming a dense beam of electrons moving along helical trajectories round the axis of a gyrotron cavity. The maximum beam current is 4 A and the pitch-factor of electrons is 1.0 for a particle energy of 250 keV and a pulse duration of 10 µs. Using such a beam in a gyrotron operated at the third cyclotron harmonic, we obtain single-mode oscillation with a power of 10 µs in the TE3,8 and TE3,9 modes with frequencies 371 and 414 GHz, respectively.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 48, No. 10–11, pp. 823–829, October–November 2005.
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Bratman, V.L., Kalynov, Y.K., Manuilov, V.N. et al. Submillimeter-wave large-orbit gyrotron. Radiophys Quantum Electron 48, 731–736 (2005). https://doi.org/10.1007/s11141-006-0001-9
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DOI: https://doi.org/10.1007/s11141-006-0001-9