等离子体填充相对论行波管  

Relativistic Traveling Wave Tube Filled With Plasma

作　　者：谢鸿全[1] 李承跃[2] 鄢扬[2] 刘盛纲[2] 

机构地区：[1]西南科技大学理学院,四川绵阳621002 [2]电子科技大学高能电子学研究所,四川成都610054

出　　处：《重庆大学学报（自然科学版）》2004年第4期72-77,共6页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(10347009);四川省教育厅自然科学基金资助项目(2003B019)

摘　　要：相对论行波管是近20年来发展起来的一种重要的高功率微波器件,它利用电子注中的慢空间电荷波与结构波发生同步互作用来实现高频信号放大。近年来研究发现,当在微波器件中填充了等离子体以后,器件的输出功率和互作用效率得到显著提高,同时等离子体还可改善电子注的传输质量,甚至取消笨重的外加磁场。综述了等离子体填充相对论行波管的研究背景和国内外的发展概况,报道了该类器件在理论和实验研究两个方面的最新进展,具体分析了等离子体加载两种慢波结构———波纹波导和螺旋线中电磁波传播的色散方程,预测了该类器件的发展趋势,提出了一些建议。Relativistic traveling wave tube is an important high power microwave device which has been well developed in the past twenty years. The application mechanism is the interaction of a slow space charge wave, propagating in an (electron) beam, with an electromagnetic wave supported by a slow wave structure and that the high frequency signal is amplified. Recently, it has been found experimentally that injected plasma into the microwave devices may enhanced the interaction efficiency and the output power. Plasma filling can also improve the transmission quality of electron beam, (even) make beam transmission without a guiding magnetic field. A detail overview of the study of relativistic traveling wave tube filled with plasma over the world is shown and the recent achievements, theories and experiments about this kind of device are reported. The dispersion equations of electromagnetic wave propagating in two slow wave structures —— corrugated-wall waveguide and helix, filled with plasma are analyzed respectively. The development trend of it and some suggestions are given.

关 键 词：等离子体 相对论行波管 波纹波导 螺旋线 

分 类 号：TN128[电子电信—物理电子学]