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采用STEP+RAMP的模型模拟低杂波与等离子体耦合。在该模型中,等离子体边界密度一开始就处于一个比较高的值(大于截止密度)。通过真空区、密度平台区以及密度梯度区域波动方程的求解,应用边界电磁场连续性条件和阻抗匹配条件,得到了低杂波的功率反射系数和耦合功率谱,验证了波与等离子体耦合的最佳条件,并在满足最佳耦合和相位差恒定条件下,对STEP+RAMP模型和Brambilla理论的耦合结果进行了比对。
The model of STEP + RAMP is used to simulate low noise and plasma coupling. In this model, the plasma boundary density starts at a relatively high value (greater than the cut-off density). By solving the wave equation in the vacuum zone, the density plateau region and the density gradient region, the power reflection coefficient and the coupling power spectrum of the low clutter were obtained by using the boundary electromagnetic field continuity condition and the impedance matching condition. The coupling between the wave and the plasma was verified Good conditions, and under the conditions of optimal coupling and phase difference, the coupling results of STEP + RAMP model and Brambilla’s theory are compared.