Physics
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83..735k&link_type=abstract
Journal of Geophysical Research, vol. 83, Feb. 1, 1978, p. 735-738.
Physics
2
Collisional Plasmas, Current Sheets, Earth Magnetosphere, Magnetic Storms, Solitary Waves, Trapped Particles, Atmospheric Models, Bernstein Energy Principle, Electron Energy, Geomagnetic Tail, Magnetohydrodynamic Stability, Potential Energy
Scientific paper
The proposed mechanism is based on the entrapment of the current-carrying electrons in a Bernstein-Greene-Kruskal (BGK) wave train as described by Bernstein et al. (1957). It is shown that as the coherent BGK solitons grow, an increasing number of current-carrying electrons are trapped. It is suggested that the proposed instability may occur in the sheet current in the magnetotail and that if could be responsible for triggering magnetospheric substorms. In the process of trapping, a fraction of the electron streaming energy is converted into the electrostatic potential energy of the BGK wave. The total energy must be conserved. The total momentum must also be conserved. The momentum given up by the trapped electrons must be picked up by the ions which remain stationary to the BGK wave as in the considered model
Akasofu Syuh-Ichi
Kan Joseph R.
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