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Sheared-flow-driven vortices in a magnetized dusty electron–positron plasma

Published online by Cambridge University Press:  29 May 2001

P. K. SHUKLA ,
T. FARID ,
L. STENFLO  and
O. G. ONISHCHENKO
P. K. SHUKLA
Affiliation:
Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
T. FARID
Affiliation:
Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
L. STENFLO
Affiliation:
Department of Plasma Physics, Umeå University, S-90187 Umeå, Sweden
O. G. ONISHCHENKO
Affiliation:
Institute of Physics of the Earth, 123810 Moscow, Russia
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Extract

It is shown that sheared plasma flows can generate nonthermal electrostatic waves in a magnetized dusty electron–positron plasma. Linearly excited modes attain large amplitudes and start interacting among themselves. Nonlinearly coupled modes self-organize in the form of coherent vortices comprising a vortex chain and a double vortex. Conditions under which the latter appear are given. The relevance of our investigation to space, astrophysical, and laboratory plasmas is pointed out.

Type
Research Article
Information
Journal of Plasma Physics , Volume 64 , Issue 4 , October 2000 , pp. 427 - 431
Copyright
© 2000 Cambridge University Press

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