Physics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm32c07e&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM32C-07
Physics
2720 Energetic Particles, Trapped, 2730 Magnetosphere--Inner
Scientific paper
Magnetospheric electrons energized in a non-axisymmetric field have been shown to reach MeV energies when acted upon by a single frequency toroidal mode ULF wave at a harmonic of the particle drift frequency (Elkington and Hudson, 1999, {Geophys. Res. Lett.}, {26}, 21, 3373). In general a range of frequencies and oscillation modes should exist in the magnetosphere. Toroidal and poloidal modes, which effectively provide a drift resonant transport mechanism, produce radial diffusion rates with time scales of hours. The purpose of this study is to determine how the amount of diffusion varies in both radial distance (L) and energy as a function of time, depending on the non-axisymmetry of a compressed dipole magnetic field, as well as the initial energy and radial positions of test particles, for both poloidal and toroidal oscillations.
Eccles A. A.
Elkington Scot R.
Hudson Mary K.
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