Physics
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995kosis..33...52v&link_type=abstract
Kosmicheskie Issledovaniia, Tom 33, No. 1, p. 52 - 61
Physics
Magnetospheres: Plasma Diagnostics, Magnetospheres: Structure, Magnetohydrodynamics: Earth Magnetosphere
Scientific paper
A hydrodynamic theory is presented of non-linear electrostatic waves and structures of arbitrary amplitude travelling in a collisionless plasma in the drift direction in external constant electric and magnetic fields. An equation is derived for the relation between the density of a particular particle species and the electrostatic potential which reduces to the well known Boltzmann formula in particular cases. The theory is based on the use of the electrostatic field of a wave which is selfconsistent with the particle motion (electrons and ions) in a quasineutral plasma. It is shown that the solutions obtained can resemble the "ion holes", "electrostatic shocks", and "double layers" observed in the magnetospheric plasma on auroral flux tubes. The theoretical estimates of their parameters are consistent with the observed ones for such nonlinear structures.
Gal'Perin Yu. I.
Volosevich A. V.
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