Global scale-invariant dissipation in collisionless plasma turbulence.
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 monoscaling in the dissipation range. This presents a strong observational constraint on theories of dissipation mechanisms in turbulent collisionless plasmas.
Centre for Fusion, Space and Astrophysics; University of Warwick, Coventry CV4 7AL, United Kingdom. k.kiyami@warwick.ac.uk
K H
KH
Kiyani
S C
SC
Chapman
Yu V
YV
Khotyaintsev
M W
MW
Dunlop
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F
Sahraoui