论文标题
站立自动顾问血浆波
Standing autoresonant plasma waves
论文作者
论文摘要
讨论了通过chi频驱动的微不足道平衡的强烈非线性立体血浆波（SPW）的形成和控制。如果驱动幅度超过阈值，则通过该系统中的线性共振，激发波将保持相锁定，驱动器可产生波幅度的受控生长。我们通过vlasov-Poisson模拟说明了这些自动扬剂波，显示了局部电子密度最大值的峰值激发的形成显着超过了未扰动的血浆密度。 Whitham的平均变异方法应用于简化的水袋模型，产生了自动顾问SPW的弱非线性演变和自动耐药阈值。如果流动的驾驶频率接近一定的恒定水平，则驱动的SPW在目标振幅下饱和，以避免动力波破裂。
Formation and control of strongly nonlinear standing plasma waves (SPWs) from a trivial equilibrium by a chirped frequency drive is discussed. If the drive amplitude exceeds a threshold, after passage through the linear resonance in this system, the excited wave preserves the phase-locking with the drive yielding a controlled growth of the wave amplitude. We illustrate these autoresonant waves via Vlasov-Poisson simulations showing formation of sharply peaked excitations with local electron density maxima significantly exceeding the unperturbed plasma density. The Whitham's averaged variational approach applied to a simplified water bag model yields the weakly nonlinear evolution of the autoresonant SPWs and the autoresonance threshold. If the chirped driving frequency approaches some constant level, the driven SPW saturates at a target amplitude avoiding the kinetic wave breaking.
