高功率微波与等离子体相互作用理论和数值研究

袁忠才; 时家明

doi:10.7498/aps.63.095202

脉冲功率激光技术国家重点实验室，电子工程学院，合肥 230037

Theoretical and numerical studies on interactions b etween high-p ower microwave and plasma

摘要: 研究高功率微波与等离子体的相互作用，对于微波放电和电磁兼容研究均具有重要意义。基于波动方程、等离子体的流体力学方程以及波尔兹曼方程，建立高功率微波脉冲与等离子体相互作用的理论模型，并结合等离子体的特征参数，采用时域有限差分方法分析了等离子体电子密度和高功率微波传输特性的变化。结果表明，由于高功率微波的电子加热作用，等离子体中的非线性效应明显，发生击穿使得等离子体电子密度增大，从而导致微波的反射增强，透过率降低。所提出的模型和相关结果对于高功率微波和电磁脉冲防护具有指导意义。

关键词:

Abstract: Research of interactions between high-power microwave and plasma is of importance for both microwave discharge and electromagnetic compatibility. Based on wave equations, fluid equations, and Boltzmann equations of plasma interactively, a theoretical model of interactions between high-power microwave and plasma was established. Combined with characteristic parameters of plasma, the model was solved numerically by the method of finite difference in time domain to analyze variations of plasma electron density and transmission property of high-power microwave. Results show that heating of electrons by incident high-power microwave makes nonlinear effects become obvious in the plasma, and gas breakdown increases plasma electron density which results in the enhancement of reflection of microwave and the of decrease transitivity. The model mentioned above and results related are instructive for protecting against high-power microwave and electromagnetic pulse.

高功率微波与等离子体相互作用理论和数值研究

脉冲功率激光技术国家重点实验室，电子工程学院，合肥 230037

关键词:

Theoretical and numerical studies on interactions b etween high-p ower microwave and plasma

脉冲功率激光技术国家重点实验室，电子工程学院，合肥 230037

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