On the origin of the ion acoustic soliton

T. E. Sheridan; S. Yi; K. E. Lonngren

doi:10.1063/1.873044

On the origin of the ion acoustic soliton

T. E. Sheridan^*, S. Yi, K. E. Lonngren

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

The excitation of ion acoustic solitons by a grid modulated near the ion plasma frequency is studied computationally in a plasma of kinetic ions and Boltzmann electrons. It is found that a large-amplitude, pulse-like, ion acoustic wave is launched from the grid and then amplified via inverse Landau damping. This wave is unstable and decays nonlinearly into an ion acoustic soliton and an ion acoustic wave packet. The model reproduces features observed in the experiment of Yi et al. [Phys. Plasmas 4, 2436 (1997)], confirming its essential correctness. The results are also consistent with Korteweg-de Vries theory.

Original language	English
Pages (from-to)	3165-3170
Number of pages	6
Journal	Physics of Plasmas
Volume	5
Issue number	9
DOIs	https://doi.org/10.1063/1.873044
Publication status	Published - 1998

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AU - Lonngren, K. E.

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AB - The excitation of ion acoustic solitons by a grid modulated near the ion plasma frequency is studied computationally in a plasma of kinetic ions and Boltzmann electrons. It is found that a large-amplitude, pulse-like, ion acoustic wave is launched from the grid and then amplified via inverse Landau damping. This wave is unstable and decays nonlinearly into an ion acoustic soliton and an ion acoustic wave packet. The model reproduces features observed in the experiment of Yi et al. [Phys. Plasmas 4, 2436 (1997)], confirming its essential correctness. The results are also consistent with Korteweg-de Vries theory.

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On the origin of the ion acoustic soliton

Abstract

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