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Anomalous ion mixing within a Kelvin-Helmholtz vortex in a collisionless plasmaAnomalously fast ion mixing is observed in a hybrid code simulation (particle ions and a massless electron fluid) of the Kelvin-Helmholtz instability in a collisionless plasma. While the traditional view predicts that the ion mixing occurs on a time scale longer than the roll-up time T(v) of the Kelvin-Helmholtz vortex by a factor of (velocity shear scale length)/(ion Larmor radius), the simulation results show that the mixing occurs within a time scale comparable to T(v). It is shown that this fast mixing is due to the scattering of ions by unsteady electromagnetic fields.
Document ID
19920054249
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Terasawa, T.
(California, University La Jolla, United States)
Fujimoto, M.
(Institute of Space and Astronautical Science Sagamihara, Japan)
Karimabadi, H.
(NASA Headquarters Washington, DC United States)
Omidi, N.
(California, University La Jolla, United States)
Date Acquired
August 15, 2013
Publication Date
May 4, 1992
Publication Information
Publication: Physical Review Letters
Volume: 68
Issue: 18, M
ISSN: 0031-9007
Subject Category
Plasma Physics
Accession Number
92A36873
Distribution Limits
Public
Copyright
Other

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