Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam

被引：0
作者：
陈晔 [1 ,2 ]
赵鼎 [1 ]
王勇 [1 ]
机构：
[1] Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences
[2] Graduate University of the Chinese Academy of Sciences
来源：
Chinese Physics B | 2011年 / 10期
基金：
中国国家自然科学基金;
关键词：
Cerenkov maser; field-match method; beam-wave interaction; hybrid-mode dispersion; growth rate;
D O I：
暂无
中图分类号：
O53 [等离子体物理学];
学科分类号：
070204 ;
摘要：
A linear theory of a rectangular Cerenkov maser (RCM) with a sheet electron beam is developed by using the fieldmatch method. Based on the three-dimensional beam-wave interaction model proposed in this paper, a hybrid-mode dispersion equation and its analytical solution are derived for the RCM. Through numerical calculations, the effects of the beam-grating gap, beam thickness, current density, beam voltage and waveguide width on the linear growth rate are analysed. Moreover, the performance difference between the RCM with the closed transverse boundary and that with the upper open boundary is compared. The results show that the closed RCM model can avoid the effect of RF radiation on beam-wave interaction, which is more rational for practical applications.
引用
收藏
页码：469 / 475
页数：7
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