The attenuation mechanism of plasma oscillations at the initial stage of electron beam injection from a spacecraft during active experiments in the ionosphere

Details The attenuation mechanism of plasma oscillations at the initial stage of electron beam injection from a spacecraft during active experiments in the ionosphere The attenuation mechanism of plasma oscillations at the initial stage of electron beam injection from a spacecraft during active experiments in the ionosphere

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ge%26ae..24..205f&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 24, Mar.-Apr. 1984, p. 205-210. In Russian.

Computer Science

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2

Beam Injection, Ionospheric Heating, Ionospheric Sounding, Plasma Interaction Experiment, Plasma Oscillations, Spacecraft Charging, Current Density, Electron Beams, Energy Dissipation, Ionospheric Currents, Ionospheric Electron Density, Neutral Currents, Plasma-Particle Interactions

Scientific paper

The injection of electrons from a spacecraft produces charge density oscillations in the ionospheric plasma with a frequency close to that of the plasma because of the absence of compensation for the injection current. The electric potential of the spacecraft starts changing with the same frequency, and a high-frequency energy flux is established toward the plasma. In the collisionless cold plasma the energy of incident radiation is transformed to the energy of a plasma electron flux (neutralization current). The plasma electrons absorb the energy of the variable electric field and transport it to the surface of the spacecraft where it is transformed to heat. This results in a dissipation of energy in the spacecraft-system, and the plasma oscillations are attenuated. The attenuation mechanism proposed here is supported by the results of beam injection experiments in the ionosphere.

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