Investigation of the plasma mantle of the earth's magnetosphere. II - The ion composition

Physics

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Auroral Zones, Magnetospheric Ion Density, Plasma Diagnostics, Space Plasmas, Helium Ions, Hydrogen Ions, Oxygen Ions, Particle Acceleration, Positive Ions, Prognoz Satellites

Scientific paper

Prognoz-7 mass analysis of the plasma in the high-latitude boundary layer (the plasma mantle) provided direct evidence that the ionosphere is, along with the solar wind, a source of plasma in this region, filling it with H(+) and O(+) ions. The concentration of ionospheric O(+) ions in the mantle usually amounts to several percent, and the energy of these ions amounts to several keV. The content of O(+) ions is usually higher than that of He(+) ions, which is evidence of the ionospheric (and not plasmaspheric) origin of the O(+) ions. The mechanism of the acceleration of ionospheric ions is evidently such that it communicates an equal energy to all ions independently of mass. The content of O(+) ions positively correlates with the level of magnetospheric activity.

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