Rotating electric fields in complex (dusty) plasmas

Nosenko, V.; Ivlev, A. V.; Zhdanov, S. K.; Fink, M.; Morfill, G. E.

doi:10.1063/1.3194272

Cited by 33 publications

(33 citation statements)

References 29 publications

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“…A careful inspection of different dust particle configurations reveals that for monolayer (2D) plasma crystals the expected effect is well pronounced and can be reliably measured. Indeed, the monolayer experiments clearly demonstrate that the interparticle distances near the crystal edge are always significantly larger than in the central part of the structure [27,28]. Although the 2D crystals normally levitate in the sheath of the lower electrode in radio frequency (rf) discharges, where the vertical component of the electric field is large enough to balance gravity, one can think of the application of our theoretical findings to the observed variations of particle surface density (or interparticle distances) developing along the horizontal coordinate.…”

Section: Double-layer Structuresmentioning

confidence: 96%

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Nonlinear structures of strongly coupled complex plasmas in the proximity of a presheath/sheath edge

et al. 2010

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Abstract. The formation of a steady-state nonlinear potential structure of a double-layer type near the presheath/sheath edge of a plasma discharge is theoretically investigated in complex plasmas containing Boltzmann electrons, cold fluid ions and strongly coupled microparticles. Equilibrium of the particles is provided by the electrostatic force and an effective 'dust pressure' associated with electrostatic interactions between the highly charged grains. The results are of importance for complex plasma experiments in microgravity conditions, for thermophoretically levitated configurations and for processing plasmas loaded by nanometer-sized microparticles.

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Section: Double-layer Structuresmentioning

confidence: 96%

“…setup and plasma parameters are the same as described in [27], but without employment of the additional electrode box). Figure 7 illustrates the variation in normalized particle separations measured in the close vicinity of the boundary (X = 0) of this monolayer crystal.…”

Section: Double-layer Structuresmentioning

confidence: 99%

Nonlinear structures of strongly coupled complex plasmas in the proximity of a presheath/sheath edge

et al. 2010

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“…Two mechanisms of cluster rotation were proposed in Ref. [10]. One mechanism is based on the interaction of the induced dipole moment of the cluster with the applied field, the other on the ion drag force.…”

Section: Dynamically Driven Clustersmentioning

confidence: 99%

“…First, they are used as model systems to study generic phenomena such as self-organization and transport, at the level of individual particles [3][4][5][6][7]. Second, clusters can be used for diagnostic purposes, e. g. probing the plasma parameters at the position of particles [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Network analysis of three-dimensional complex plasma clusters in a rotating electric field

et al. 2014

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Network analysis was used to study the structure and time evolution of driven three-dimensional complex plasma clusters. The clusters were created by suspending micron-size particles in a glass box placed on top of the rf electrode in a capacitively coupled discharge. The particles were highly charged and manipulated by an external electric field that had a constant magnitude and uniformly rotated in the horizontal plane. Depending on the frequency of the applied electric field, the clusters rotated in the direction of the electric field or remained stationary. The positions of all particles were measured using stereoscopic digital in-line holography. The network analysis revealed the interplay between two competing symmetries in the cluster. The rotating cluster was shown to be more cylindrical than the nonrotating cluster. The emergence of vertical strings of particles was also confirmed.

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Plasma diagnostics for complex plasmas under microgravity and on ground

Pustylnik¹,

Thoma²,

Morfill³

et al. 2012

J. Plasma Phys.

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Complex plasmas are low-temperature plasmas containing micron-sized particles (microparticles) such as dust grains. These are present in astrophysical systems (comets, molecular clouds, et al.) and in technological applications (microchip production by plasma etching, deposition of solar cells, et al.). Complex plasmas are also of interest in basic science because these are often used as models for many other strongly coupled many-body systems in solid state, fluid, or plasma physics. Since gravity has a strong influence on the microparticle component, experiments under microgravity (parabolic flights, sounding rockets, International Space Station (ISS)) are performed. Interaction between microparticles depends on plasma parameters such as ion density or ion temperature. Also, the presence of microparticles may change the properties of background plasma. Therefore, the background plasma needs to be characterized to provide adequate interpretation of the microgravity experiments. For this purpose a dedicated high-speed diagnostic system has been set up.

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Rotating electric fields in complex (dusty) plasmas

Cited by 33 publications

References 29 publications

Nonlinear structures of strongly coupled complex plasmas in the proximity of a presheath/sheath edge

Nonlinear structures of strongly coupled complex plasmas in the proximity of a presheath/sheath edge

Network analysis of three-dimensional complex plasma clusters in a rotating electric field

Plasma diagnostics for complex plasmas under microgravity and on ground

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