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Title: 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:
 [1] ; ; ; ; ; ;  [2] ; ;  [1]
  1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-8070 (United States)
  2. Asociacion Euratom-Ciemat, 28040 Madrid (Spain)
Publication Date:
OSTI Identifier:
285583
DOE Contract Number:
AC05-96OR22464
Resource Type:
Journal Article
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