Physics – Plasma Physics
Scientific paper
2008-03-04
Physics
Plasma Physics
Scientific paper
10.1088/1367-2630/10/9/093018
The notions of self-organised criticality (SOC) and turbulence are traditionally considered to be applicable to disjoint classes of phenomena. Nevertheless, scale-free burst statistics is a feature shared by turbulent as well as self-organised critical dynamics. It has also been suggested that another shared feature is universal non-gaussian probability density functions (PDFs) of global fluctuations. Here, we elucidate the unifying aspects through analysis of data from a laboratory dusty plasma monolayer. We compare analysis of experimental data with simulations of a two-dimensional (2D) many-body system, of 2D fluid turbulence, and a 2D SOC model, all subject to random forcing at small scales. The scale-free vortex cascade is apparent from structure functions as well as spatio-temporal avalanche analysis, the latter giving similar results for the experimental and all model systems studied. The experiment exhibits global fluctuation statistics consistent with a non-gaussian universal PDF, but the model systems yield this result only in a restricted range of forcing conditions.
Klumov Boris
Knapek Christina
Kozelov Boris
Ratynskaia Svetlana
Rypdal Kristoffer
No associations
LandOfFree
Scale-free vortex cascade emerging from random forcing in a strongly coupled system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Scale-free vortex cascade emerging from random forcing in a strongly coupled system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scale-free vortex cascade emerging from random forcing in a strongly coupled system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-406226