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Modified Korteweg—de Vries ion-acoustic solitons in a plasma

Published online by Cambridge University Press:  13 March 2009

Y. Nakamura  and
I. Tsukabayashi
Y. Nakamura
Affiliation:
Institute of Space and Astronautical Science, Komaba, Meguro-ku, Tokyo 153, Japan
I. Tsukabayashi
Affiliation:
Institute of Space and Astronautical Science, Komaba, Meguro-ku, Tokyo 153, Japan
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Abstract

Propagation of nonlinear ion-acoustic waves in a multi-component plasma with negative ions is investigated experimentally. At a critical concentration of negative ions, both compressive and rarefactive solitons are observed. The velocities and widths of the solitons are measured and compared with the soliton solutions of the modified Korteweg–de Vries equation and of the pseudopotential method. The modified Korteweg–de Vries equation is solved numerically to investigate overtaking collisions of a positive and a negative soliton. Fluid equations together with Poisson's equation are numerically integrated to simulate their head-on collisions.

Type
Research Article
Information
Journal of Plasma Physics , Volume 34 , Issue 3 , December 1985 , pp. 401 - 415
Copyright
Copyright © Cambridge University Press 1985

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