Modification of ionospheric plasma near a satellite during external sounding of the ionosphere by high-power radio pulses

Details Modification of ionospheric plasma near a satellite during external sounding of the ionosphere by high-power radio pulses Modification of ionospheric plasma near a satellite during external sounding of the ionosphere by high-power radio pulses

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985kosis..23..113p&link_type=abstract

Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 23, Jan.-Feb. 1985, p. 113-122. In Russian.

Computer Science

Sound

1

Ionospheric Sounding, Plasma Turbulence, Plasma-Electromagnetic Interaction, Radio Probing, Space Plasmas, Cavitons, Electron Acceleration, Ionospheric Disturbances, Plasma Resonance, Solitary Waves, Time Lag

Scientific paper

An intense-turbulence mechanism is proposed to explain long delays of excitation at characteristic plasma resonant frequencies during the external radio sounding of the ionosphere. Owing to ponderomotive forces the plasma density goes to zero in the near field of the emitting antenna; owing to modulational striction instability in the pump wave field, a turbulent region develops with the formation of a soliton structure, and cavitons arise and subsequently collapse. When the satellite intersects the turbulent region, long excitations at the characteristic frequencies are determined by the intersection by the receiving antennas of both stable and unstable solitons moving at velocities less than the satellite velocity. A surface-wave excitation mechanism is proposed to explain electron acceleration observed on the Intercosmos-19 satellite.

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