Title: On the magnetohydrodynamic Kelvin-Helmholtz instability driven by a nonuniform ion drift
Authors: Vranjes, Jovo ×
Tanaka, MY #
Issue Date: 2002
Publisher: Amer inst physics
Series Title: Physics of plasmas vol:9 issue:10 pages:4379-4382
Abstract: An analytical study of the stability of perturbations propagating along a nonuniform ion drift, which includes both the ExB and the ion diamagnetic drifts, in a magnetohydrodynamic plasma immersed in a nonuniform magnetic field, is presented. The behavior of stable and unstable modes is studied in the case when the shear flow is described by an analytical tanh(x)-type ion drift. A threshold for the wave-number is obtained analytically and a perturbative analysis is performed around the threshold. It is shown that modes with wave-numbers that are less than the threshold gain energy from the shear flow and are therefore unstable, which is in agreement with well-known instability criteria obtained numerically. (C) 2002 American Institute of Physics.
ISSN: 1070-664X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plasma-astrophysics Section
× corresponding author
# (joint) last author

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