Global Scale-Invariant Dissipation in Collisionless Plasma Turbulence

被引：202

作者：

Kiyani, K. H. ^{[1
]}

Chapman, S. C. ^{[1
]}

Khotyaintsev, Yu. V. ^{[2
]}

Dunlop, M. W. ^{[3
]}

Sahraoui, F. ^{[4
,5
]}

机构：

[1] Univ Warwick, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England

[2] Swedish Inst Space Phys, Uppsala, Sweden

[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[5] Ecole Polytech, CNRS, Lab Phys Plasmas, F-78140 Velizy Villacoublay, France

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

ELECTRON MAGNETOHYDRODYNAMIC TURBULENCE; SOLAR-WIND; MAGNETIC-FIELD; KINETIC DISSIPATION; STAFF EXPERIMENT; ENERGY CASCADE; FLUCTUATIONS; DEPENDENCE; ANISOTROPY; RANGE;

D O I：

10.1103/PhysRevLett.103.075006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A higher-order multiscale analysis of the dissipation range of collisionless plasma turbulence is presented using in situ high-frequency magnetic field measurements from the Cluster spacecraft in a stationary interval of fast ambient solar wind. The observations, spanning five decades in temporal scales, show a crossover from multifractal intermittent turbulence in the inertial range to non-Gaussian mono-scaling in the dissipation range. This presents a strong observational constraint on theories of dissipation mechanisms in turbulent collisionless plasmas.

引用

页数：4

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