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Title: Vortex motion of dust particles due to non-conservative ion drag force in a plasma

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4941973· OSTI ID:1469680

Vortex motion of the dust in a dusty plasma is shown to result because non-parallelism of the ion density gradient and the gradient of the magnitude of the ion ambipolar velocity cause the ion drag force on dust grains to be non-conservative. Furthermore, dust grain poloidal vortices consistent with the model predictions are experimentally observed, and the vortices change character with imposed changes in the ion temperature profile as predicted. For a certain ion temperature profile, two adjacent co-rotating poloidal vortices have a well-defined X-point analogous to the X-point in magnetic reconnection.

Research Organization:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
SC0010471
OSTI ID:
1469680
Alternate ID(s):
OSTI ID: 1237983
Journal Information:
Physics of Plasmas, Vol. 23, Issue 2; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (8)

Dust vortices in a direct current glow discharge plasma: a delicate balance between ion drag and Coulomb force journal February 2019
Collective dynamics of large aspect ratio dusty plasma in an inhomogeneous plasma background: Formation of the co-rotating vortex series journal February 2018
Structural transition of vortices to nonlinear regimes in a dusty plasma journal October 2018
Kinetic effects in a plasma crystal induced by an external electron beam journal April 2019
Effect of dust particle size on the plasma characteristics in a radio frequency capacitively coupled silane plasma journal October 2018
Multiple steady state co-rotating dust vortices in streaming plasma journal October 2019
Rotation of dust vortex in a metal saw structure in dusty plasma journal December 2019
Dynamics of nonspherical, fractal-like water-ice particles in a plasma environment journal October 2018

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