Numerical simulations of one-dimensional solitons
作者:
N. R. Pereira,
R. N. Sudan,
J. Denavit,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1977)
卷期:
Volume 20,
issue 2
页码: 271-281
ISSN:0031-9171
年代: 1977
DOI:10.1063/1.861864
出版商: AIP
数据来源: AIP
摘要:
Numerical simulations of (i) the propagation and interactions of one-dimensional Langmuir solitons and (ii) their generation from random fluctuations by an external pump field are presented. The results of particle simulations are compared with computations based on Zakharov’s fluid model. Those computations establish that Langmuir solitons are reasonably long lived entities in one dimension and are accurately described by Zakharov’s equations, provided that resonant particle interactions are taken into account by the inclusion of a damping term. The power spectrum of the electron field fluctuations resulting from the generation of many solitons by an external pump field is compared with the theory of Kingsep, Rudakov, and Sudan.
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