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Exact Solution with Shock-Like Structure for Nonlinear Kinetic Alfvéh Waves and Electron Acceleration |
| WU De-jin |
| Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 |
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| Cite this article: |
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WU De-jin 1999 Chin. Phys. Lett. 16 111-113 |
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Abstract An analytical solution with shock-like structure for nonlinear kinetic Alfvén waves in a low-β (β << me /mi << 1) plasma is presented. It is showed that the oblique propagating nonlinear kinetic Alfvén wave can rarefy the plasma and lead to a local density jump over a characteristic width of 10λe at the wave front, in particular, these new shock-like structure of nonlinear kinetic Alfvén waves possess a net field-aligned electric potential drop with a typical order of (2me /miβ)Te / e >> Te / e , as a consequence, they can effectively accelerate field-aligned electrons to velocities of order of the Alfvén velocity.
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| Keywords:
52.40.Db
52.35.Mw
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Published: 01 February 1999
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| PACS: |
52.40.Db
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(Electromagnetic (nonlaser) radiation interactions with plasma)
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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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