Nonlinear mode coupling and internal resonance observed in a dusty plasma
Nonlinear mode coupling and internal resonance observed in a dusty plasma
复制标题
DOI：
10.1088/1367-2630/ab4d95
复制
发表时间：
2019-10
影响因子：
3.3
通讯作者：
Zhiyue Ding;K. Qiao;Nicholas Ernst;J. Kong;Mudi Chen;L. Matthews;T. Hyde
中科院分区：
文献类型：
--
作者：
Zhiyue Ding;K. Qiao;Nicholas Ernst;J. Kong;Mudi Chen;L. Matthews;T. Hyde
本文报道了首次在尘埃等离子体中观测到的内共振现象，它揭示了尘埃等离子体相互作用的内在非线性。当驱动一个系统的垂直对齐的灰尘颗粒对在垂直方向上，水平运动被发现是激发在发病期间的内部共振时，更高频率的水平晃动模式是非线性耦合到垂直呼吸模式通过1：2可互换的关系。还提供了尘埃粒子在等离子体中的非线性相互作用的理论模型和理论模型的结果与实验观测相匹配。
In this paper, we report the first experimental observation of internal resonance in a dusty plasma, which shows the intrinsic nonlinearities of dust interactions in plasmas. When driving a system of vertically aligned dust particle pairs in the vertical direction, the horizontal motion is found to be excited during onset of internal resonance when the higher-frequency horizontal sloshing mode is nonlinearly coupled to the vertical breathing mode through the 1:2 commensurable relation. A theoretical model of the nonlinear interaction of dust particles in plasma is also provided and the results of the theoretical model are shown to match experimental observations.