薄环形等离子体填充波导中的T-G模式研究

Research on the T-G Modes in Two Waveguides Filled with an Infinitely Thin Annular Plasma

利用等离子体流体模型和线性场理论,分别导出了无限薄环形等离子体填充圆柱波导和无限薄环形等离子体填充波纹波导中的色散关系。通过数值计算,对以上两种情况下的T—G模的特性作了相应的比较和分析。研究表明,在无限薄环形等离子体填充情况下,T-G模的频率不再受到等离子体振荡频率的限制。

By means of fluid model and linear field theory,the dispersion equation of the electromagnetic wave propagation along a cylindrical waveguide filled with an infinitely thin annular plasma.The dispersion characteristics of T-G modes in cylindrical waveguide and corrugated wall waveguide are analyzed,respectively.It is found that the frequency of the T-G mode couldn't be confined by plasma oscillation frequency in the case of the infinitely annular plasma filling.