任意纵向磁场中等离子体-腔漂移通道电磁波的解析解

Electromagnetic wave accurate expressions in plasma-cavity drift channel in arbitrary axial magnetic field

从麦克斯韦方程和双成分等离子体粒子在外部轴向磁场的线性化运动方程出发,推导出了任意纵向磁场中等离子体介电张量和等离子体-腔漂移通道的电磁波的解析解。结果表明在一般情形下,在位于外部均匀纵向磁场的等离子体波导中,不存在分离的轴对称E波和H波。在此基础上进一步得到轴对称波的具体解析式。单波近似下的结果和俄罗斯全俄电技术研究所M.A.Zavjalov等的结果一致。

The plasma tensor dielectric permittivity and electromagnetic wave accurate expressions in the arbitrary axial magnetic field are obtained from the Maxwell＇s equations and the double component plasma particle linear movement equations. It is showed that E wave and H wave can＇t be separated in this kind of plasma wave-guide. The axial-symmetrical solutions for the field components are obtained, which have the same form as that in ref. [4] with the single-wave-approximation. The electromagnetic wave accurate expressions are very important for the research of the interaction between the plasma and the electromagnetic wave.