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Numerical Simulation of Solitary Kinetic Alfvén Waves |
| DING Jian, LI Yi, WANG Shui |
| CAS Key Laboratory of Basic Plasma Physics, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 |
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| Cite this article: |
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DING Jian, LI Yi, WANG Shui 2008 Chin. Phys. Lett. 25 2554-2557 |
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Abstract Using the two-fluid model in the case of α>>gg 1 (α=βbe/2Q, β is the ratio of thermal pressure to magnetic pressure, and Q=me/mi), we numerically investigate the interactions between two solitary kinetic Alfvén waves (SKAWs) and between an SKAW and a density discontinuity. The results show that the two SKAWs would remain in their original shapes and propagate at their initiating speeds, which indicates that SKAWs behave just like standard solitons. The simulation also shows that SKAWs will reflect and refract when crossing a discontinuity and propagating into a higher density region. The transmission wave is an SKAW with increasing density, and the reverberation is a disturbance with lower amplitude.
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52.35.Bj
52.35.Mw
52.30.Ex
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Received: 12 March 2008
Published: 26 June 2008
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| PACS: |
52.35.Bj
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(Magnetohydrodynamic waves (e.g., Alfven waves))
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52.35.Mw
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(Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))
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52.30.Ex
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(Two-fluid and multi-fluid plasmas)
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