Nonlinear generation of ion holes in auroral plasmas

Details Nonlinear generation of ion holes in auroral plasmas Nonlinear generation of ion holes in auroral plasmas

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.8355l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A6, June 1, 1992, p. 8355-8359. Research supported by FNRS.

Physics

Plasma Physics

2

Auroras, Electrostatic Waves, Ion Density (Concentration), Plasma Physics, Wave-Particle Interactions, Electron Acceleration, Ion Cyclotron Radiation

Scientific paper

It is shown that ion density holes can be generated by a large-amplitude electrostatic ion cyclotron wave on auroral field lines. The rate at which the ion holes are excited is obtained. The presence of ion holes may cause intermittent double layers to be observed in the auroral particle acceleration region. The predicted scale lengths and velocities of the double layers are in agreement with observations.

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