Nonlinear response of vertical paired structure in complex plasma

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dc.contributor.authorDing, Zhiyue
dc.contributor.authorQiao, Ke
dc.contributor.authorKong, Jie
dc.contributor.authorMatthews, Lorin Swint.
dc.contributor.authorHyde, Truell Wayne.
dc.date.accessioned2019-07-16T15:12:19Z
dc.date.available2019-07-16T15:12:19Z
dc.date.issued2019-03-21
dc.description.abstractThe effect of the ion wake downstream of grains immersed in a flowing plasma is observed experimentally through the apparent non-reciprocal grain–grain interactions. Here we extend amplitude-frequency response analysis to examine the nonlinear components of the interaction of a dust particle pair aligned with the ion flow. The particle pair is modeled as two forced coupled oscillators, and a new coordinate system is introduced in which the breathing and sloshing modes are linearly decoupled. Multiple-scale analysis is used to derive analytical expressions for the response in the vertical direction for each mode in this coordinate system. By fitting the analytical expressions to experimentally measured response curves, the nonlinear part of the wake-modified particle–particle interaction is determined and identified as the source for the coupling between the sloshing and breathing modes. It is found that the restoring force acting on the downstream particle is more linear, thus stabilizing the oscillations of the downstream grain.en_US
dc.description.keywordsnonlinear responseen_US
dc.description.keywordsdusty plasmaen_US
dc.identifier.citationPlasma Physics and Controlled Fusion, 61, 055004, March 21, 2019en_US
dc.identifier.doi10.1088/1361-6587/ab062c
dc.identifier.urihttps://hdl.handle.net/2104/10643
dc.language.isoenen
dc.publisherPlasma Physics and Controlled Fusionen_US
dc.titleNonlinear response of vertical paired structure in complex plasmaen_US
dc.typeArticleen

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