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未磁化等离子体介质切连科夫脉塞的线性理论

吴坚强 刘盛纲 莫元龙

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未磁化等离子体介质切连科夫脉塞的线性理论

吴坚强, 刘盛纲, 莫元龙

LINEAR THEORY OF UNMAGNETIZED PLASMA FILLED DIELECTRIC CHERENKOV MASER

WU JIAN-QIANG, LIU SHENG-GANG, MO YUAN-LONG
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  • 利用线性自洽场理论,讨论了电子在扰动场作用下的三维扰动.在此基础上,对常用的薄环形相对论电子环束在填充未磁化等离子体的介质筒慢波波导中激励的切连科夫辐射进行了详细的分析,导出了此电子环束与慢波系统中任意波导模互作用的色散方程和波增长率,并对其进行了详细的分析和讨论.分析表明切连科夫辐射是由其波导模与电子注模耦合所致.最后详细计算和分析了等离子体密度对色散特性和波增长率的影响
    By use of the self-consistent linear field theory, three-dimensional perturbation of electrons affected by the perturbed electromagnetic fields is discussed. And Cherenkov radiations excited by a thin annular relativistic electron beam in a unmagnetized-plasma-filled, dielectric lined slow-wave waveguide are analysed. The dispersion equation and the wave growth rate of the interaction of the electron beam to the waveguide modes with arbitrary azimuthal mode number are derived. It′s clearly shown that the Cherenkov radiation results from the coupling of the waveguide mode in the unmagnetized-plasma-filled, dielectric lined slow-wave waveguide to the beam mode via the electron beam. Finally, the effects of plasma density on the dispersion relation and the wave growth rate are calculated and discussed.
    • 基金项目: 国家自然科学基金及国家高技术研究发展计划资助的课题.
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  • 文章访问数:  7464
  • PDF下载量:  650
  • 被引次数: 0
出版历程
  • 收稿日期:  1995-11-08
  • 修回日期:  1996-05-06
  • 刊出日期:  1997-01-05

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