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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: IEEE Trans Electron Devices. 2019 Dec 10;67(1):328–334. doi: 10.1109/ted.2019.2953658

Fig. 4.

Fig. 4.

Start oscillation current of the operating mode, TE11,2,1, and the neighboring modes w.r.t. the operating magnetic field. Also shown in the center is the electric field profile of the operating mode TE11,2 in a resonator cavity of radius rc = 1.593 mm and the circle representing the electron beam of radius re = 0.97 mm.