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Resonant Acceleration of Magnetospheric Electrons Driven by the R--X Mode |
| XIAO Fu-Liang1;ZHENG Hui-Nan2;WANG Shui2 |
| 1Department of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410076
2School 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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XIAO Fu-Liang, ZHENG Hui-Nan, WANG Shui 2005 Chin. Phys. Lett. 22 517-520 |
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Abstract An extended relativistic model is developed to evaluate the superluminous R--X-mode resonance especially the second-order and third-order resonances with electrons in the Earth’s magnetosphere. The potential for stochastic electron acceleration driven by the R--X mode is determined by the dispersive properties of the R--X mode and specifically the resonant harmonic N. In contrast to the limited acceleration at the first harmonic (1N=1) resonance, for the higher harmonic (N>1) resonances, the R--X mode is capable of accelerating electrons from ～10keV to ～ MeV energies, over a wide range of wave normal angles, in spatial regions extending from the auroral cavity to the latitude (>30°) outer radiation belt. This indicates that higher-order resonance is essentially important for the electron acceleration for the oblique wave propagation.
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| Keywords:
94.20.Rr
52.35.Hr
94.30.Hn
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Published: 01 February 2005
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| PACS: |
94.20.Rr
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52.35.Hr
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(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))
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94.30.Hn
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(Energetic trapped particles)
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