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Title: Fluctuation-induced flux at the plasma edge in toroidal devices

Fluctuation-induced flux at the plasma edge in toroidal devices Fluctuation-induced fluxes have a bursty character. As a consequence, a significant part of the total particle flux is carried out by sporadic, large transport bursts. The local flux distribution function is consistent with a near-Gaussian character of the fluctuations. The radial dependence of the statistical properties of plasma fluctuations and induced fluxes have been investigated in the plasma boundary region of the TJ-I tokamak [I. Garc{acute i}a-Cort{acute e}s {ital et} {ital al}., Phys. Fluids B {bold 4}, 4007 (1992)] and the TJ-IU torsatron [E. Ascasibar {ital et} {ital al}., in {ital Plasma} {ital Physics} {ital and} {ital Controlled} {ital Fusion} {ital Research}, Proceedings of the 15th Conference on Plasma Physics and Controlled Nuclear Fusion Research, Seville (International Atomic Energy Agency, Vienna, in press)]. There is a striking similarity between the statistical properties of turbulent transport in both devices. {copyright} {ital 1996 American Institute of Physics.}
Authors: ; ; ; ; ; ; ; ;
Publication Date:
OSTI Identifier:285583
DOE Contract Number:AC05-96OR22464
Resource Type:Journal Article
Data Type:
Resource Relation:Journal Name: Physics of Plasmas; Journal Volume: 3; Journal Issue: 7; Other Information: PBD: Jul 1996
Research Org:Oak Ridge National Laboratory
Country of Publication:United States
Language:English
Subject: 70 PLASMA PHYSICS AND FUSION; TJ-1 TOKAMAK; TURBULENCE; TORSATRON STELLARATORS; FLUCTUATIONS; DISTRIBUTION FUNCTIONS; TRANSPORT THEORY; GAUSSIAN PROCESSES PARTICLE FLUX