Physics
Scientific paper
Apr 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977p%26ss...25..395k&link_type=abstract
Planetary and Space Science, vol. 25, Apr. 1977, p. 395-403.
Physics
2
Earth Magnetosphere, Electron Precipitation, Magnetic Disturbances, Particle Flux Density, Whistlers, Nonuniform Magnetic Fields, Particle Trajectories, Pitch (Inclination), Potential Energy, Turbulence Effects
Scientific paper
The resonant interaction of electrons with a coherent whistler-mode wave in the magnetosphere, and corresponding particle precipitation through the loss-cone, are considered. We show that, due to the inhomogeneity of the magnetic field, the phase untrapped resonant electrons play a basic role in the precipitation process. An effective change of their pitch-angles near the loss-cone is calculated and particle fluxes are estimated for quiet magnetospheric conditions (weak diffusion without the wave). It appears that observation of the precipitation caused by a single whistler-mode wave is within the scope of experimental possibilities. The duration of the precipitation process is of the order of the electron bounce period. It is also shown that precipitating current may produce an observable magnetospheric disturbance with a time characteristic of the order of the bounce period.
Karpman V. I.
Shkliar D. R.
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