Physics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..347m&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 5, p. 347-355.
Physics
2
Auroral Zones, Beam Injection, Ionospheric Electron Density, Kilometric Waves, Maser Outputs, Plasma-Particle Interactions, Cold Plasmas, Electron Beams, High Energy Electrons
Scientific paper
Injection of an artificial energetic electron beam into the ionosphere during the Phenomena Induced by Charged Particle Beams experiment onboard Spacelab-1 in 1983 has been found to trigger electromagnetic waves near the electron gyrofrequency. While the role of the primary beam-cold plasma interaction is to initiate the whole process by giving the neutralization return beam a loss-conelike distribution, dispersion relation calculations based on a numerical semirelativistic model developed from Ronnmark's (1982) WHAMP program show that the observed waves can be adequately described as maser emissions generated in the relativistic mode through a return beam-cold plasma interaction, which almost solely determines the growth rate level. Similarities with the Auroral Kilometric Radiation observations are stressed, and offer a good opportunity to gain some knowledge about natural phenomena by means of active experiments.
Béghin Christian
Krasnosel'skikh V. V.
Mourenas D.
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