等离子体填充的相对论行波管的线性理论

Linear Theory of Relative Traveling-Wave Tube Filled with Plasma

基于无限大引导磁场作用的假定,采用波纹波导,导出了填充有等离子体时波纹波导的色散方程.采用数值计算方法,分析了无电子注时等离子体密度对色散特性、有电子注时对波导频率和增益的影响.结果表明,随着等离子体密度的增加,TM01模的工作频率不断增大,而峰值增益不断减小.

Based on the assumption that the guide magnetic field is infinite, the dispersion equation for a ripple slow-wave structure filled with plasmas was derived. Through a numerical simulation, the effects of plasma density were analyzed on the dispersion property when there is no an electron beam in a slow-wave structure filled with plasmas and on the frequency and gain when there is an electron beam in the slow-wave structure. The research result shows that with the raising of plasma density, the operation frequency of TM(01)module increases and the gain of a slow-wave structure filled with plasmas decreases continuously.