有限磁场作用下等离子体圆柱波导中的线性理论
Linear theory of plasma cylindrical waveguide in a finite magnetic field
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摘要: 考虑了有限磁场的作用,利用“匹配场法”推导出填充环形等离子体时圆柱波导的色散方程,并较详细地讨论了等离子体的厚度、密度, 以及所加磁场强度对色散特性的影响。尤其讨论了等离子体厚度对增长率的影响并得出：对应最大的增长率有一最佳的等离子体厚度。Abstract: The dispersion equation on a cylindrical waveguide having an annular plasma sheet is derived under the condition of limited magnetic field. The different plasma density, thickness, and field in tensity influence to the plasma frequency, especially the influences of plasma thickness on depressive characteristics and interaction growth rate are discussed, and the conclusion is obtained that there is a perfect thickness to get the biggest interaction rate.
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Key words:
- annular plasma /
- dispersion equation /
- finite magnetic field /
- growth rate of the wave
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