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Spatial Distribution of Energetic Electrons during Magnetic Reconnection |
| WANG Rong-Sheng1,2, LU Quan-Ming1,2, GUO Jun3, WANG Shui1 |
| 1School of Earth and Space Sciences, University of Science and Technology of China, Hefei 2300262Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 1000803School of Mathematics and Physics, Qingdao University of Science and Technology, Qingdao 266041 |
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| Cite this article: |
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WANG Rong-Sheng, LU Quan-Ming, GUO Jun et al 2008 Chin. Phys. Lett. 25 3083-3085 |
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Abstract Electron acceleration by the inductive electric field near the X point in magnetic reconnection is an important generation mechanism for energetic electrons. Particle simulations have revealed that most of energetic electrons reside in the magnetic field line pileup region, and a depletion of energetic electrons can be found near the centre of the diffusion region [Phys. Plasmas, 13 (2006) 012309]. We report direct measurement of energetic electron in and around the ion diffusion region in near-Earth tail by the cluster, and our observations confirm the above predictions: a depletion of the high-energy electron fluxes is detected near the centre of the diffusion region. At the same time, the plasma temperature has a similar profile in the diffusion region.
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| Keywords:
94.30.Cp
94.30.Cl
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Received: 16 May 2008
Published: 25 July 2008
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