| GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS |
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Diffusion Simulation of Outer Radiation Belt Electron Dynamics Induced by Superluminous L-O Mode Waves |
| XIAO Fu-Liang1,2**, HE Zhao-Guo1 ZHANG Sai1, SU Zhen-Peng3, CHEN Liang-Xu1,4
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1School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410004
2State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190
3CAS Key Lab for Basic Plasma Science, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026
4School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
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| Cite this article: |
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XIAO Fu-Liang, HE Zhao-Guo ZHANG Sai, SU Zhen-Peng et al 2011 Chin. Phys. Lett. 28 039401 |
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Abstract Temporal evolution of outer radiation belt electron dynamics resulting from superluminous L-O mode waves is simulated at L=6.5. Diffusion rates are evaluated and then used as inputs to solve a 2D momentum-pitch-angle diffusion equation, particularly with and without cross diffusion terms. Simulated results demonstrate that phase space density (PSD) of energetic electrons due to L-O mode waves can enhance significantly within 24 h, covering a broader pitch-angle range in the absence of cross terms than that in the presence of cross terms. PSD evolution is also determined by the peak wave frequency, particularly at high kinetic energies. This result indicates that superluminous waves can be a potential candidate responsible for outer radiation belt electron dynamics.
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| Keywords:
94.20.Wj
52.35.Hr
94.20.Wc
94.30.Hn
94.30.Xy
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Received: 21 May 2010
Published: 28 February 2011
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| PACS: |
94.20.wj
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(Wave/particle interactions)
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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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94.20.wc
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(Plasma motion; plasma convection; particle acceleration)
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94.30.Hn
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(Energetic trapped particles)
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94.30.Xy
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(Radiation belts)
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