Nonaxisymmetric Instabilities in Periodically Corrugated Cylindrical Waveguide with Low Magnetic Field

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概要

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• Nonaxisymmetric Cherenkov and slow cyclotron instabilities in a backward wave oscillator are investigated by using a new version of self-consistent linear theory. The slow cyclotron instability as well as Cherenkov instability can be driven by an axial electron beam without any initial perpendicular velocity. In a low magnetic field region, the radial displacement of beam plays an important role in the beam interactions. The slow cyclotron instability becomes strong, when the perturbed cyclotron motion and the electromagnetic wave rotate in the same direction. The rotational direction of electromagnetic wave also affects the Cherenkov instability.

• 社団法人 電気学会の論文

著者

• Ogura Kazuo

  Graduate School Of Science And Technology Niigata University

• YAMAZAKI Hoshiyuki

  Graduate School of Science and Technology, Niigata University

• IWAI Makoto

  Graduate School of Science and Technology, Niigata University

• SUZUKI Yoshitaka

  Graduate School of Science and Technology, Niigata University

• Yamazaki Hoshiyuki

  Niigata Univ. Niigata

• Takagi Hirokazu

  Graduate School of Science and Technology, Niigata University

• Watanabe Osamu

  Plasma Research Center, University of Tsukuba

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