摘要
本文在考虑等离子体厚度效应的情况上,详尽地推导了充填圆环状等离子体的圓柱波导中TM模慢电磁波的色散方程;利用相对论空间电荷波理论,导出了相对论电子注在轴向磁场引导下沿等离子体内表面传输时的空间电荷波方程;求得了电子注和慢空间电荷波相互作用的线性增益和频率漂移;讨论了等离子体厚度、密度对色散特性和互作用增益的影响。
The dispersion equation of TM mode slow wave in a cylindrical waveguide having an annular plasma sheet is derived under the condition of plasma thickness effect. By means of the relativistic space charge wave theory, the space charge wave equation is obtained when the relativistic electron beam guided by a axial magnetic field is moving along the inner surface of the plasma sheet. The growth rate and frequency shifting of the interaction between the electron beam and slow space wave are obtained. The influences of plasma thickness on dispersive characteristics and interaction growth rate are discussed. Some useful results are obtained.
关键词
等离子体
色散特性
互作用增益
频率漂移
波导
Plasma, Dispersive characteristics, Interaction growth rate, Frequency shifting
