Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9613829b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Aug. 1, 1991, p. 13,829-13,839. Research supported by Royal Society,
Physics
20
Auroral Arcs, Electron Acceleration, Magnetohydrodynamic Turbulence, Velocity Distribution, Wave-Particle Interactions, Electric Fields, Group Velocity, Monte Carlo Method, Phase Velocity, Wave Propagation
Scientific paper
A stochastic model of wave-particle interaction is used to delineate electron distribution which can be quantitatively related to the fundamental properties of the accelerator. A Monte-Carlo method is used to show that the amplitude of the turbulence dictates the width of the peak and that the column density of wave energy describes the amplitude of the peak. Electric-field measurements are compared to estimates of the properties of three auroral arcs. The comparison includes parameters such as the amplitude and rms of lower hybrid wave packets, the velocities and the frequencies of the resonant waves, the column density of wave energy, the net electric field, and the electric-field energy density. The electric-field measurements agree with the predictions of the model of turbulent acceleration. The peak in the auroral electron velocity distribution can be determined stochastically via resonant interactions with lower-hybrid electrostatic turbulence.
Bryant Duncan A.
Cook Anthony C.
de Angelis Umberto
Perry Chris H.
Wang Zhao-Sheng
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