Electron acceleration in a geomagnetic Field Line Resonance | Zendy

Damiano P. A. | Zendy; Johnson J. R. | Zendy

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Electron acceleration in a geomagnetic Field Line Resonance

Author(s) -

Damiano P. A.,

Johnson J. R.

Publication year - 2012

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2011gl050264

Subject(s) - physics , earth's magnetic field , electron , acceleration , resonance (particle physics) , field line , dipole , computational physics , kinetic energy , atomic physics , magnetic field , alfvén wave , field (mathematics) , line (geometry) , magnetohydrodynamics , classical mechanics , nuclear physics , geometry , mathematics , quantum mechanics , pure mathematics

A hybrid MHD kinetic‐electron model in dipolar coordinates is used to simulate the upward current region of a geomagnetic Field Line Resonance (FLR) system for a realistic ambient electron temperature of a keV. It is found that mirror force effects result in potential drops sufficient to accelerate electrons to energies in excess of a keV in support of field aligned currents on the order of 0.5 μ A/m 2 . The wave energy dissipated in this acceleration would completely damp an undriven FLR with an equatorial width of 0.5 R E within two resonance cycles.

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