Bibliographic Details
| Title: |
Generalized self-similarity of intermittent plasma turbulence in space and laboratory plasmas. |
| Authors: |
Budaev, V. P.1,2, Zelenyi, L. M.2, Savin, S. P.2 |
| Source: |
Journal of Plasma Physics. Dec2015, Vol. 81 Issue 6, pN.PAG-00. 1p. |
| Subjects: |
Self-similar processes, Plasma turbulence, Solar wind, Magnetosphere, Earth (Planet), Power law (Mathematics) |
| Abstract: |
Statistical characteristics of plasma fluctuations in the solar wind (SW), the Earth’s magnetosphere and fusion devices are reviewed. The turbulence in all these media has a complicated multiscale structure and exhibits a generalized self-similarity in an extended scale range. The anomalous transport of mass and momentum is intermittent and is carried by sporadic plasma flux bursts with non-Gaussian statistics, long-range correlation and multifractality. Intermittent turbulent transport is characterized by superdiffusion with power law $\langle {\it\delta}x^{2}\rangle \propto {\it\tau}^{{\it\alpha}}$, ${\it\alpha}\approx 1.2{-}1.8$. The structure functions in all these plasma environments are well fitted by the log-Poisson model of turbulence. Intermittent plasma turbulence displays universal properties and consists of quasi-1-D singular dissipative structures. [ABSTRACT FROM PUBLISHER] |
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| Database: |
Engineering Source |
