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@ARTICLE{Xu:41092,
author = {Xu, H. Y. and Jachmich, S. and Weynants, R. R. and Huber,
A. and Unterberg, B. and Samm, U.},
title = {{I}nvestigation of self-organized critically behavior of
edge plasma transport in {T}orus experiment of technology
oriented research},
journal = {Physics of plasmas},
volume = {11},
issn = {1070-664X},
address = {[S.l.]},
publisher = {American Institute of Physics},
reportid = {PreJuSER-41092},
pages = {5413 - 5422},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {The self-organized criticality (SOC) behavior of the edge
plasma transport has been studied using fluctuation data
measured in the plasma edge and the scrape-off layer of
Torus experiment of technology oriented research tokamak [H.
Soltwisch , Plasma Phys. Controlled Fusion 26, 23 (1984)]
before and during the edge biasing experiments. In the
"nonshear" discharge phase before biasing, the fluctuation
data clearly show some of the characteristics associated
with SOC, including similar frequency spectra to those
obtained in "sandpile" transport and other SOC systems,
slowly decaying long tails in the autocorrelation function,
values of Hurst parameters larger than 0.5 at all the
detected radial locations, and a radial propagation of
avalanchelike events in the edge plasma area. During the
edge biasing phase, with the generation of an edge radial
electric field E-r and thus of E(r)xB flow shear, contrary
to theoretical expectation, the Hurst parameters are
substantially enhanced in the negative flow shear region and
in the scrape-off layer as well. Concomitantly, it is found
that the local turbulence is well decorrelated by the E(r)xB
velocity shear, consistent with theoretical predictions. (C)
2004 American Institute of Physics.},
keywords = {J (WoSType)},
cin = {IPP},
ddc = {530},
cid = {I:(DE-Juel1)VDB181},
pnm = {Kernfusion und Plasmaforschung},
pid = {G:(DE-Juel1)FUEK250},
shelfmark = {Physics, Fluids $\&$ Plasmas},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000225450200008},
doi = {10.1063/1.1810160},
url = {https://juser.fz-juelich.de/record/41092},
}