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

Laut, Ingo; Räth, Christoph; Wörner, Lisa; Nosenko, V.; Zhdanov, S. K.; Schablinski, Jan; Block, Dietmar; Thomas, Hubertus M.; Morfill, G. E.

doi:10.1103/physreve.89.023104

Cited by 9 publications

(4 citation statements)

References 41 publications

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“…This yields Z l /Z ≈ Z s /Z ≈ 0.7. Note that the charge reduction of approximately 30% agrees well with recent observations [25,26].…”

Section: How the Flow Of Ions Drives Torsionssupporting

confidence: 90%

Spontaneous formation and spin of particle pairs in a single-layer complex plasma crystal

Nosenko¹,

Zhdanov²,

Thomas³

et al. 2015

EPL

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In an experiment with a single-layer plasma crystal, spontaneous pairing of particles was observed upon a sudden reduction of the discharge power. The pairs were oriented vertically with the upper particle above the crystal layer and the lower particle beneath it, the pair size was about 0.2 mm. The pairs were spinning around their vertical axis with the upper particle leading and the lower one following it; the rotation speed was 10-13 Hz. Spinning particle pairs disturbed the plasma crystal through interaction with their neighbors. Upon further reduction of the discharge power, the spinning pairs proliferated in the plasma crystal and eventually it melted. The experiment was performed with micron-size polymer particles suspended in the radio-frequency (rf) argon plasma at a pressure of 157 mtorr. We propose a theoretical model of a spinning particle pair based on the plasma wake effect. Spinning particle pairs can be used as a diagnostic tool for plasma wakes or as a generic model of a 2D system of vortices.

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“…This yields Z l /Z ≈ Z s /Z ≈ 0.7. Note that the charge reduction of approximately 30% agrees well with recent observations [25,26].…”

Section: How the Flow Of Ions Drives Torsionssupporting

confidence: 90%

Spontaneous formation and spin of particle pairs in a single-layer complex plasma crystal

Nosenko¹,

Zhdanov²,

Thomas³

et al. 2015

EPL

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“…As an example of complex system dynamics, these solid particles immersed into a weakly ionized plasma are the subject of many detailed studies [1,2]. The microparticles can be visualized individually in real time, thus providing a kinetic level of observations of, for instance, vortices, self-propelling, tunneling and channeling [3][4][5][6].…”

Section: Six Good Reasons To Publish With Eplmentioning

confidence: 99%

“…-To more closely analyze the structure of turbulence and associated wave processes we study excitations inside the "buffer zone" (0 < x < 7 mm; see fig. 1), which is relatively tranquil and free of intense non-linear excitations 5 . This enables a closer look at weak fluctuations.…”

Section: Experiments Particulars -We Use the Experimental Data Obtain...mentioning

confidence: 99%

Wave turbulence observed in an auto-oscillating complex (dusty) plasma

Zhdanov

Schwabe

Räth

et al. 2015

EPL

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The Editorial Board invites you to submit your letters to EPL EPL is a leading international journal publishing original, innovative Letters in all areas of physics, ranging from condensed matter topics and interdisciplinary research to astrophysics, geophysics, plasma and fusion sciences, including those with application potential. The high profile of the journal combined with the excellent scientific quality of the articles ensures that EPL is an essential resource for its worldwide audience. EPL offers authors global visibility and a great opportunity to share their work with others across the whole of the physics community.

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“…In a plasma crystal, the particle-particle interaction is strongly influenced by the surrounding plasma. While the interaction in the bulk plasma is well described by a Yukawa potential [1], the strong ion flow in the plasma sheath region distorts the screening cloud [24,25]. This plasma wake below the particles adds an attractive component to the interaction [26] which was described theoretically as a point-like positive effective charge below each particle [27].…”

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confidence: 99%

Synchronization of particle motion in compressed two-dimensional plasma crystals

Laut¹,

Räth²,

Zhdanov³

et al. 2015

EPL

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The collective motion of dust particles during the mode-coupling induced melting of a two-dimensional plasma crystal is explored in molecular dynamics simulations. The crystal is compressed horizontally by an anisotropic confinement. This compression leads to an asymmetric triggering of the mode-coupling instability which is accompanied by alternating chains of inphase and anti-phase oscillating particles. A new order parameter is proposed to quantify the synchronization with respect to different directions of the crystal. Depending on the orientation of the confinement anisotropy, mode-coupling instability and synchronized motion are observed in one or two directions. Notably, the synchronization is found to be direction-dependent. The good agreement with experiments suggests that the confinement anisotropy can be used to explain the observed synchronization process.

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

Cited by 9 publications

References 41 publications

Spontaneous formation and spin of particle pairs in a single-layer complex plasma crystal

Spontaneous formation and spin of particle pairs in a single-layer complex plasma crystal

Wave turbulence observed in an auto-oscillating complex (dusty) plasma

Synchronization of particle motion in compressed two-dimensional plasma crystals

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