【摘要】 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。更多还原

【Abstract】 The "step plus ramp model" has been accepted to calculate the coupling of lower hybrid wave with plasma,in which the edge plasma density is assumed to be higher(large than the cut-off density) in the front.The reflected power coefficient and the power spectrum of lower hybrid wave have been validated by solving the wave equation in the areas of vacuum,density plateau and density gradient,respectively,under the conditions of electromagnetic continuity and impedance matching at the edge.The optimal coupling condition of lower hybrid wave with plasma has been explored,and the results obtained from "step plus ramp model" and Brambilla theory has been discussed.更多还原