等离子体与电磁波相互作用FDTD 数值模拟

围绕等离子体与电磁波相互作用的问题,将气体分子动力学与电磁场理论相结合,基于玻尔兹曼方程和麦克斯韦方程建立了等离子体与电磁波相互作用自洽模型,为了对模型进行验证,将该方法与经典的电流密度卷积时域有限差分法进行对比,以一维情况下电磁波由自由空间向等离子体内传播为例,应用时域有限差分法对二者进行了数值仿真,仿真结果证明了所建立模型的正确性。此外,基于该模型仿真分析了等离子体参数对电磁波在等离子体中传播的影响,为等离子体与电磁波相互作用的研究提供了一种新思路和新方法。

FDTD Numerical Simulation of Interaction Between Plasma and Electromagnetic Wave

In order to investigate the interaction between plasma and electromagnetic wave, the gas molecule kinetic theory and electromagnetic theory are combined to establish the self-consistent model by using Boltzmann equation and Maxwell equation. To verify the correctness of the model,the classical JEC-FDTD method is studied to compare with the model. Taking the transmission of electromagnetic wave from free space to plasma as an example, the FDTD numerical method is adopted to simulate these two methods under one dimension case. The simulation results prove that the model established is correct. Besides, by using this model, the effects of the plasma parameters to the transmission process of electromagnetic wave in plasma are also investigated. This research provides an new idea and method for the interaction between plasma and electromagnetic wave.