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Numerical measurements and analytical studies are performed on a stochastic model with features relevant to plasma confinement. Although the model lacks crucial features of self-organized criticality and its transport can be computed by standard techniques, it nethertheless exhibits intermittency and algebraic time correlation's. This suggests that SOC need not be the explanation for observed long-time tails in experimental fluctuation data. Arguments based on the renormalized spectral balance equation, and simulation of a standard nonlinear paradigm, predict a range of Hurst exponents in reasonable agreement with the observations without invoking submarginal dynamics

Additional information

Authors: OTTOVIANNI M, CEA Cadarache (FR);KROMMES J A, CEA Cadarache (FR)
Bibliographic Reference: Article: CEA EURATOM, (1999), 1666
Record Number: 199910910 / Last updated on: 1999-07-05
Original language: en
Available languages: en