2006年12月
Slow cyclotron instability due to surface modulation of an annular beam
JOURNAL OF PLASMA PHYSICS
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- ,
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- 巻
- 72
- 号
- 6
- 開始ページ
- 905
- 終了ページ
- 908
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1017/S0022377806005095
- 出版者・発行元
- CAMBRIDGE UNIV PRESS
The Cherenkov instability used in slow-wave devices has been well studied in the literature. However, in previous analyses, the beam motion is restricted to the longitudinal direction assuming an infinitely strong magnetic field. For the finite strength magnetic field, the transverse beam perturbation cannot be ignored and leads to the slow cyclotron instability. Recently, a new version of self-consistent field theory considering three-dimensional perturbation has been developed based on a solid beam, in which the effect of the transverse perturbation appears as a surface charge at a fixed boundary. In the case of a thin annular beam, the boundary is modulated and is essentially different from the solid beam case. We propose a self-consistent field theory considering the moving modified boundary surface. The slow cyclotron instability due to the modulation of an infinitesimally thin annular electron beam is presented.
- リンク情報
- ID情報
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- DOI : 10.1017/S0022377806005095
- ISSN : 0022-3778
- Web of Science ID : WOS:000243673400031