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review article

Microphysics of Cosmic Plasmas: Hierarchies of Plasma Instabilities from MHD to Kinetic

Brown, M. R.
•
Browning, P. K.
•
Dieckmann, M. E.
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2013
Space Science Reviews

In this article, we discuss the idea of a hierarchy of instabilities that can rapidly couple the disparate scales of a turbulent plasma system. First, at the largest scale of the system, L, current carrying flux ropes can undergo a kink instability. Second, a kink instability in adjacent flux ropes can rapidly bring together bundles of magnetic flux and drive reconnection, introducing a new scale of the current sheet width, a"", perhaps several ion inertial lengths (delta (i) ) across. Finally, intense current sheets driven by reconnection electric fields can destabilize kinetic waves such as ion cyclotron waves as long as the drift speed of the electrons is large compared to the ion thermal speed, v (D) a parts per thousand << v (i) . Instabilities such as these can couple MHD scales to kinetic scales, as small as the proton Larmor radius, rho (i) .

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Type
review article
DOI
10.1007/s11214-013-0005-7
Web of Science ID

WOS:000326110700011

Author(s)
Brown, M. R.
Browning, P. K.
Dieckmann, M. E.
Furno, I.
Intrator, T. P.
Date Issued

2013

Publisher

Springer

Published in
Space Science Reviews
Volume

178

Issue

2-4

Start page

357

End page

383

Subjects

MHD

•

Turbulence

•

Reconnection

•

Relaxation

•

Instability

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CRPP  
SPC  
Available on Infoscience
December 9, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/97750
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