Computer Science – Sound
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.5949g&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A4, p. 5949-5958.
Computer Science
Sound
4
Auroral Zones, Beam Injection, Earth Ionosphere, Electron Beams, Plasma Frequencies, Plasma Waves, Radio Frequencies, Radio Receivers, Resonance, Rocket Sounding, Satellite Sounding
Scientific paper
We have observed narrowband plasma waves at frequencies between the electron cyclotron frequency and the ambient plasma frequency. These waves are produced by the injection of a low-current electron beam (above 3 mA). The frequency of these emissions is consistent with the diffuse resonances that have been observed by satellite-borne sounding experiments. These results were obtained from the rocket-borne experiment SCEX 3, NASA flight 39.002 UE, which was launched on February 1, 1990 from Poker Flat Research Range (65.10 deg N, 147.50 deg W). These emissions are observed to propagate as far as 270 m across the ambient magnetic field with apparently little attenuation. These emissions are also observed up to 700 m from the accelerator along the electron beam.
Goerke R. T.
Kellogg Paul J.
Monson Steven J.
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