Superdiffusion and viscoelastic vortex flows in a two-dimensional complex plasma

S. Ratynskaia, K. Rypdal, C. Knapek, S. Khrapak, A.V. Milovanov, A. Ivlev, J. Juul Rasmussen, G.E. Morfill

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Viscoelastic vortical fluid motion in a strongly coupled particle system has been observed experimentally. Optical tracking of particle motion in a complex plasma monolayer reveals high grain mobility and large scale vortex flows coexistent with partial preservation of the global hexagonal lattice structure. The transport of particles is superdiffusive and ascribed to Levy statistics on short time scales and to memory effects on the longer scales influenced by cooperative motion. At these longer time scales, the transport is governed by vortex flows covering a wide spectrum of temporal and spatial scales.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume96
    Issue number10
    Pages (from-to)105010 (4 pages)
    ISSN0031-9007
    DOIs
    Publication statusPublished - 2006

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