On nonlinear evolution of Alfvenic turbulence in low beta plasmas

Journal Article · Fri Nov 14 23:00:00 EST 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3028316· OSTI ID:21259686

Nariyuki, Y ^[1]; Hada, T ^[2]; Tsubouchi, K ^[3]

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1. Department of Electrical Engineering, Kochi National College of Technology, 200-1, Monobe-Otsu, Nankoku City, Kochi 783-8508 (Japan)
2. Department of Earth System Science and Technology, Kyushu University, 6-1, Kasuga-koen, Kasuga City, Fukuoka 816-8580 (Japan)
3. National Institute of Information and Communications Technology, Koganei, Tokyo 184-8795 (Japan)

Nonlinear evolution of broadband spectrum Alfvenic turbulence is studied by using one-dimensional hybrid simulations. Numerical solutions indicate that the important characteristics in the solar wind magnetohydrodynamic (MHD) turbulence are naturally reproduced by nonlinear evolution of Alfvenic turbulence with more realistic power spectrum than one used in the past studies. Namely, (i) the modulational instability can dissipate the magnetic energy of Alfvenic turbulence and preserve the Alfvenicity even in low beta plasmas. (ii) Nonlinear evolution of the Alfvenic turbulence can induce the generation of the localized structures in the solar wind MHD turbulence.

• OSTI ID: 21259686
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
LOW-BETA PLASMA
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
NUMERICAL SOLUTION
PLASMA INSTABILITY
PLASMA SIMULATION
SOLAR WIND
TURBULENCE