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Gyrotron Backward Wave Oscillator Experiments with a Relativistic Electron Beam Using an X-Band Rectangular Waveguide |
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| Authors: | Keiichi Kamada Kouichi Nawashiro Fumiyasu Tamagawa Hisayoshi Igarashi Satiharu Kizu Cha-Yeol Lee Sunao Kawasaki Ritoku Ando and Masaru Masuzaki |
| Institution: | (1) Department of Physics, Faculty of Science, Kanazawa University, Kanazawa, 920-1192, Japan;(2) Present address: Nissin Electric Co. ltd, Ukyou-ku Kyoto, 615;(3) Present address: Toshiba Corporation, Ootawara Tochigi, 324;(4) Department of Physics, Faculty of Science, Saitama University, Saitama, 338 |
| Abstract: | A mildly relativistic electron beam (500keV, 200A, 10ns) injected into an X-band rectangular waveguide immersed in a uniform axial magnetic field (4-10kG) produced magnetically tunable microwave radiation in the 9-13 GHz frequency range with an estimated output power of 1MW. The frequency range and tunability of the radiated microwave agreed with a theoretical model for a gyrotron backward wave oscillator taking into account the low energy component of the beam electron. |
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