Open AccessNonlinear mode coupling and internal resonance observed in a dusty plasma
Author(s) -
Zhiyue Ding,
Ke Qiao,
Nicholas Ernst,
Jie Kong,
Mudi Chen,
L. S. Matthews,
Truell Hyde
Publication year - 2019
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/ab4d95
Subject(s) - physics , dusty plasma , resonance (particle physics) , nonlinear system , excited state , plasma , coupling (piping) , atomic physics , mode coupling , slosh dynamics , quantum electrodynamics , mechanics , optics , quantum mechanics , mechanical engineering , engineering
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.