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Surface waves in a plasma flow

Published online by Cambridge University Press:  01 June 2000

E. BENOVA ,
S. T. IVANOV  and
A. A. RUKHADZE
E. BENOVA
Affiliation:
Department of Physics, Institute for Foreign Students, BG-1111 Sofia, Bulgaria
S. T. IVANOV
Affiliation:
Faculty of Physics, Sofia University, BG-1164 Sofia, Bulgaria
A. A. RUKHADZE
Affiliation:
Faculty of Physics, Moscow State University, 119899 Moscow, Russia
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Abstract

Dispersion characteristics of surface waves in a semibounded plasma flow with relativistic velocity u0 parallel to the plasma–vacuum interface are presented. The plasma is considered to be cold and collisionless, which allows us to take into account only the electron motion. It is shown that – in contrast to the bulk waves, which are invariant with respect to Lorentz transformations and whose spectrum is independent of the flow velocity – the surface waves are not invariant, which leads to a dependence of their spectrum on the flow velocity and, correspondingly, to non-reciprocity. The latter peculiarity is due to the fact that the boundary conditions are not invariant.

Type
Research Article
Information
Journal of Plasma Physics , Volume 63 , Issue 5 , June 2000 , pp. 489 - 493
Copyright
2000 Cambridge University Press

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