等离子体加载耦合腔慢波结构色散分析

利用磁化等离子体介电张量和纵向场分量法对任意大小轴向磁场中等离子体填充耦合腔慢波结构进行场分析，得到磁化等离子体填充电子注通道电磁波场分量的轴对称精确解.在此基础上，建立耦合腔分区模型、采用场匹配方法建立色散方程，并数值计算得出不同等离子体密度及磁场下的耦合腔色散曲线.对不同密度等离子体填充情况下的耦合腔色散特性、混合模式的形成机理以及等离子体空间电荷波进行了分析讨论.关键词：耦合腔慢波结构等离子体混合模式色散特性

Dispersion analysis of a coupled-cavity slow wave structure filled with plasma

Utilizing the method of longitudinal field and the dielectric tensor of the magnetized plasma, the accurate expressions for the field in the plasma drifting channel were derived. Under given boundary conditions and using the moments method, the dispersion relations were obtained. The dispersion characteristics in low-density and high-density loaded plasmas were studied. The plasma space-charge wave and the formation of the hybrid modes were discussed.