等离子体天线中波的色散关系的研究

Axisymetric Surface-Wave Dispersion in Plasma Antenna

本文研究了同轴对称表面波沿等离子体柱轴向传播的色散关系 ,由此得到的波矢说明了当频率小于等离子体频率时 ,电磁波沿等离子体柱的传播类似于电磁波沿金属介质交界面上的传播 ,传播速度接近于光速。因此可以使用等离子体代替金属用来构成最基本的天线振子。

Dispersion of the axisymetric surface wave along the plasma column was studied.T he wave vector,deduced from the dispersion analysis,was used to explain the fact that the plasma surface wave,with a frequency lower than that of the plasma,pro pagates at close to light speed along the plasma column,just as it travels at me tal dielectric interface.We suggest that the plasma column can replace metals an d be designed as a good antenna.