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Nonlinear evolution of inertial Alfvén wave turbulence

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Abstract

Some recent experimental observations have been shown that inclusion of electron collisions damping in inertial Alfvén wave (IAW) dynamics may be important for laboratory as well as space plasmas. This paper presents the numerical simulation of model equation governing the nonlinear dynamics of IAW in low-beta plasmas. When the nonlinearity arises due to the ponderomotive force and Joule heating driven density perturbations, the model equation turns out to be a modified nonlinear Schrödinger equation (MNLS). The electron collisions are introduced only in the electron momentum equation. The damped localized structures of IAW with sidebands are obtained. Also, the effect of collisional damping on power spectra of magnetic fluctuations with different scaling laws has been studied. These turbulent structures may be responsible for particle acceleration in laboratory and space plasmas.

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  1. Department of Applied Sciences, Ajay Kumar Garg Engineering College, Ghaziabad, 201009, India

    Sachin Kumar

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  1. Sachin Kumar
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Correspondence to Sachin Kumar.

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Kumar, S. Nonlinear evolution of inertial Alfvén wave turbulence. Astrophys Space Sci 337, 645–650 (2012). https://doi.org/10.1007/s10509-011-0895-3

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  • DOI: https://doi.org/10.1007/s10509-011-0895-3

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