Superdiffusion and non-Gaussian statistics in a driven-dissipative 2D dusty plasma.
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.
Liu
Bin
B
Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242, USA.
Goree
J
J