Expansion of multicharged plasma clouds into ionospheric plasma with magnetic field

Collisionless plasma cloud expansion into an extremely rarefied ionized med ium is considered in the presence of a magnetic field when the medium is in motion and the cloud is retarded because of the electromagnetic interactio ns. The collisionless flow is computed on the basis of a hybrid model, in w hich the ionic motions are considered by means of kinetic equations and the electrons are governed by a hydrodynamic equation. The hybrid model of col lisionless interaction between multicharged plasma flows in a magnetic fiel d is presented.