Acceleration of thermal electrons by ICW's propagating in a multicomponent magnetospheric plasma

Details Acceleration of thermal electrons by ICW's propagating in a multicomponent magnetospheric plasma Acceleration of thermal electrons by ICW's propagating in a multicomponent magnetospheric plasma

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.2267r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, April 1, 1984, p. 2267-2273.

Physics

19

Electron Acceleration, Electron Energy, Ion Cyclotron Radiation, Magnetospheric Electron Density, Plasma Density, Wave Propagation, Cold Plasmas, Geos 1 Satellite, Geos 2 Satellite, Helium Ions, Plasma-Electromagnetic Interaction, Trapped Particles

Scientific paper

A mechanism is proposed that explains the observations of Norris et al. (1983) that thermal electrons are accelerated along field lines when intense ion cyclotron waves (ICWs) are simultaneously present in the equatorial magnetosphere. It is suggested that ICWs, which are likely to be amplified in a He(+)-rich plasma, develop a finite parallel electric field due to the He(+) ions. It is shown that this field accelerates thermal electrons along the magnetic field up to the observed energies. The conditions for acceleration by trapping effects are discussed, and the numerical evaluation of the acceleration process is addressed.

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