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

被引：5

作者：

Chen Ye ^{[1
,2
]}

Zhao Ding ^{[1
]}

Wang Yong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Elect, Key Lab High Power Microwave Sources & Technol, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CHINESE PHYSICS B | 2011年 / 20卷 / 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; TRAVELING-WAVE TUBE; AMPLIFIER; GENERATION; RADIATION; OPERATION;

D O I：

10.1088/1674-1056/20/10/108402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A linear theory of a rectangular Cerenkov maser (RCM) with a sheet electron beam is developed by using the field-match 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

页数：7

共 22 条

[1] Small-signal analysis and particle-in-cell simulations of planar dielectric Cherenkov masers for use as high-frequency, moderate-power broadband amplifiers [J].