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Nonlinear wavenumber shift of an ion acoustic wave

Journal Article · · Phys. Fluids; (United States)
DOI:https://doi.org/10.1063/1.861370· OSTI ID:7333300

The phase velocity of an ion acoustic wave propagating in a collisionless plasma is observed to decrease with wave amplitude at the same frequency. The nonlinear shift in the wavenumber is found to be proportional to the square root of the initial wave amplitude, showing the effects of trapped ions. The observed results are in good agreement with nonlinear theory provided by analogy with an electron plasma wave. (AIP)

Research Organization:
Department of Electronic Engineering, Tohoku University, Sendai, Japan
OSTI ID:
7333300
Journal Information:
Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 19:11; ISSN PFLDA
Country of Publication:
United States
Language:
English

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