1. Nonlinear mode coupling and internal resonance observed in a dusty plasma
- Author
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Zhiyue Ding, Ke Qiao, Nicholas Ernst, Jie Kong, Mudi Chen, Lorin S Matthews, and Truell W Hyde
- Subjects
complex plasma ,mode coupling ,nonlinear dynamics ,Science ,Physics ,QC1-999 - Abstract
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.
- Published
- 2019
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