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Dependence of Output Power on Cavity Length in a Gyrotron Backward Wave Oscillator |
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| Authors: | Keiichi Kamada Kouichi Nawashiro Fumiyasu Tamagawa Cha-Yeol Lee Hiroshi Yoshida Sunao Kawasaki Ritoku Ando Masaru Masuzaki |
| Affiliation: | 1. Department of Physics, Faculty of Science, Kanazawa University, Kanazawa, 920-1192, Japan 2. Nissin Electric Co. Ltd., Ukyou-Ku Kyoto, 615-0906, Japan 3. Toshiba Corporation, Ootawara Tochigi, 324-0036, Japan 4. Department of Physics, Faculty of Science, Saitama University, Saitama, 338-8570, Japan |
| Abstract: | A relativistic electron beam (500 keV, 200 A, 10 ns) generated magnetically tunable microwave radiation in a frequency range of 9-13 GHz when it is injected into an X-band rectangular waveguide immersed in a uniform axial magnetic field (4-10 kG). The mechanism of the microwave radiation was identified as the gyrotron backward wave interaction. The output power of the radiated microwave increased exponentially with the increase of the cavity length. |
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