Superdiffusion and Non-Gaussian Statistics in a Driven-Dissipative 2D Dusty Plasma

Bin Liu and J. Goree
Phys. Rev. Lett. 100, 055003 – Published 6 February 2008

Abstract

Anomalous diffusion and non-Gaussian statistics are detected experimentally in a two-dimensional driven-dissipative system. A single-layer dusty plasma suspension with a Yukawa interaction and frictional dissipation is heated with laser radiation pressure to yield a structure with liquid ordering. Analyzing the time series for mean-square displacement, superdiffusion is detected at a low but statistically significant level over a wide range of temperatures. The probability distribution function fits a Tsallis distribution, yielding q, a measure of nonextensivity for non-Gaussian statistics.

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  • Received 1 June 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.055003

©2008 American Physical Society

Authors & Affiliations

Bin Liu and J. Goree

  • Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242, USA

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Issue

Vol. 100, Iss. 5 — 8 February 2008

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