Nonlinear Interaction of 3D Kinetic Alfvén Waves and Ion Acoustic Waves in Solar Wind Plasmas
作者： N. Yadav , R. P. Sharma
DOI: 10.1007/S11207-013-0436-Z
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摘要: We have investigated the nonlinear interaction between a 3D kinetic Alfven wave (KAW) and an ion acoustic (IAW) in solar wind plasmas. A set of dimensionless equations was developed that describes pump KAW perturbed by low-frequency wave. The dependence growth rate modulational instability on perturbation number studied. simulated numerically dynamical equation with pseudo-spectral method, taking ponderomotive nonlinearity into account. itself propagates form vortex beam magnetised plasma, which manifests presence orbital angular momentum eigenmodes. discuss evolution these structures. Our results reveal Kolmogorov scaling is followed steeper power spectra, consistent observations Cluster spacecraft. relevance our investigation for
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