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Author Jana, Sayanee ♦ Chakrabarti, Nikhil ♦ Ghosh, Samiran
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ COLLISIONAL PLASMA ♦ COMPUTERIZED SIMULATION ♦ DISPERSIONS ♦ ELECTRON-ION COLLISIONS ♦ ELECTRONS ♦ FLUIDS ♦ HOLES ♦ IONS ♦ KORTEWEG-DE VRIES EQUATION ♦ MOMENT OF INERTIA ♦ NONLINEAR PROBLEMS ♦ PHASE SPACE ♦ SCHROEDINGER EQUATION ♦ WAVELENGTHS
Abstract The Alfvén wave dynamics is investigated in the framework of two-fluid approach in a compressible collisional magnetized plasma. In the finite amplitude limit, the dynamics of the nonlinear Alfvén wave is found to be governed by a modified Korteweg-de Vries Burgers equation (mKdVB). In this mKdVB equation, the electron inertia is found to act as a source of dispersion, and the electron-ion collision serves as a dissipation. The collisional dissipation is eventually responsible for the Burgers term in mKdVB equation. In the long wavelength limit, this weakly nonlinear Alfvén wave is shown to be governed by a damped nonlinear Schrödinger equation. Furthermore, these nonlinear equations are analyzed by means of analytical calculation and numerical simulation to elucidate the various aspects of the phase-space dynamics of the nonlinear wave. Results reveal that nonlinear Alfvén wave exhibits the dissipation mediated shock, envelope, and breather like structures. Numerical simulations also predict the formation of dissipative Alfvénic rogue wave, giant breathers, and rogue wave holes. These results are discussed in the context of the space plasma.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-07-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 7


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