Computer Science – Sound
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.152..331g&link_type=abstract
In ESA European Rocket and Balloon Programs and Related Res. p 331-336 (SEE N81-10914 01-99)
Computer Science
Sound
Amplitude Modulation, Auroras, Electron Beams, Electron Bunching, High Frequencies, Plasma-Electromagnetic Interaction, Earth Ionosphere, Energetic Particles, Experiment Design, Rocket Sounding, Rocket-Borne Instruments
Scientific paper
The first direct observation is reported, from a rocket-borne "mother-daughter" experiment, of high frequency modulations (1 MHz) of 8 - 10 KeV electrons in the vicinity of an artificially injected electron beam in the auroral ionosphere. The modulation was accompanied by electrostatic emissions at the same frequency. It is suggested that the particles interacted strongly with waves propagating in the electrostatic whistler mode (oblique electron plasma waves). The technique used to observe the megahertz electron bunching can be applied to conventional rocket-borne energetic electron detectors counting below 100,000 cps and should play an important diagnostic role, for understanding the complex wave-particle interactions occurring in the aurora.
Gough Michael Paul
Maehlum Bernt N.
Martelli Gianpasquale
Smith P. N.
Ventura Giulio
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