Nonlinear pitch angle scattering of energetic electrons by coherent VLF waves in the magnetosphere

Details Nonlinear pitch angle scattering of energetic electrons by coherent VLF waves in the magnetosphere Nonlinear pitch angle scattering of energetic electrons by coherent VLF waves in the magnetosphere

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.3235i&link_type=abstract

Journal of Geophysical Research, vol. 83, July 1, 1978, p. 3235-3253.

Physics

34

Coherent Electromagnetic Radiation, Earth Magnetosphere, Electron Scattering, Energetic Particles, Pitch (Inclination), Very Low Frequencies, Computerized Simulation, Cyclotron Resonance, Electron Precipitation, Particle Interactions, Particle Trajectories, Wave Interaction, Whistlers

Scientific paper

A study is made of nonlinear cyclotron resonance wave-particle interaction in the magnetosphere with attention to the pitch angle scattering of energetic electrons by coherent VLF whistler mode signals. A computer simulation of the full nonlinear equations of motions for energetic particles interacting with a longitudinal whistler mode wave in an inhomogeneous magnetosphere are used. The results are compared to those of a linear theory. Test electrons distributed in energy and pitch angle are used to simulate the full distribution of particles. The scattering of the test particles and their integration over energy and pitch angle yield the precipitated flux. The results suggest that coherent VLF waves significantly influence the dynamics and lifetimes of energetic electrons trapped in the magnetosphere and magnetic shells illuminated by the waves.

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