Nonlinear dissipation of circularly polarized Alfven waves due to the beam-induced obliquely propagating waves

Journal Article · Wed Aug 15 04:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4748296· OSTI ID:22086027

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

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1. Faculty of Human Development, University of Toyama, 3190, Toyama City, Toyama 930-8555 (Japan)
2. Department of Earth System Science and Technology, Kyushu University, 6-1, Kasuga City, Fukuoka 816-8580 (Japan)
3. Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)

In the present study, the dissipation processes of circularly polarized Alfven waves in solar wind plasmas including beam components are numerically discussed by using a 2-D hybrid simulation code. Numerical results suggest that the parent Alfven waves are rapidly dissipated due to the presence of the beam-induced obliquely propagating waves, such as kinetic Alfven waves. The nonlinear wave-wave coupling is directly evaluated by using the induction equation for the parent wave. It is also observed both in the 1-D and 2-D simulations that the presence of large amplitude Alfven waves strongly suppresses the beam instabilities.

• OSTI ID: 22086027
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALFVEN WAVES
AMPLITUDES
BEAM-PLASMA SYSTEMS
COMPUTER CODES
NONLINEAR PROBLEMS
PLASMA SIMULATION
SOLAR WIND
TWO-DIMENSIONAL CALCULATIONS
WAVE PROPAGATION