http://xxx.uni-augsburg.de/abs/physics/?0110050 Physics, abstract
physics/0110050
From: Bogdan Hnat <hnat@astro.warwick.ac.uk>
Date: Wed, 17 Oct 2001 09:08:25 GMT (80kb)
Self Organization of Edge and Internal Pedestals in a Sandpile
Authors: S. C. Chapman, R. O. Dendy, B. Hnat
Subj-class: Plasma Physics; Data Analysis, Statistics and Probability
The temperature profiles of magnetically confined plasmas can
display distinctive longlived pedestals at the edge and
internally. Here we show that such structures can arise naturally
through avalanching transport in a sandpile model. A single
control parameter that is constant across the sandpile determines
the occurrence and regularity of these effects, as well as the
entrainment of global confinement to edge pedestal dynamics. The
system dynamics indicate that the pedestals are a consequence of
an inverse cascade in real space, and that self organization is
necessary for their occurrence.
Paper: Source (80kb), PostScript, or Other formats
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Amara Graps, PhD | Max-Planck-Institut fuer Kernphysik
Heidelberg Cosmic Dust Group | Saupfercheckweg 1
+49-6221-516-543 | 69117 Heidelberg, GERMANY
Amara.Graps@mpi-hd.mpg.de * http://www.mpi-hd.mpg.de/dustgroup/~graps
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