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Electro Acceleration in a Geomagnetic Field Line Resonance
[摘要] A hybrid MHD kinetic electron model in dipolar coordinates is used to sim- ulate the upward current region of a geomagnetic Field Line Resonance (FLR) system for a realistic ambient electron temperatures of a keV. It is found that mirror force e ects result in potential drops su cient to accelerate electrons to energies in excess of a keV in support of eld aligned currents on the or- der of 0.5 ??A/m2. The wave energy dissipated in this acceleration would com- pletely damp an undriven FLR with an equatorial width of 0.5 RE within two resonance cycles.
[发布日期] 2012-08-17 [发布机构] 
[效力级别]  [学科分类] 原子、分子光学和等离子物理
[关键词] Acceleration;Alfven Waves;Space Plasma Physics [时效性] 
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