Coherent Cerenkov radiation from the Spacelab 2 electron beam

Details Coherent Cerenkov radiation from the Spacelab 2 electron beam Coherent Cerenkov radiation from the Spacelab 2 electron beam

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94..443f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Jan. 1, 1989, p. 443-452.

Physics

42

Cerenkov Radiation, Coherent Electromagnetic Radiation, Electron Beams, Plasma Diagnostics, Plasma-Particle Interactions, Spaceborne Experiments, Computerized Simulation, Plasma Waves, Power Spectra, Spacelab, Whistlers

Scientific paper

The plasma environment of the Spacelab 2 mission was investigated through the deployment of the Plasma Diagnostics Package (PDP) by the Space Shuttle Orbiter and the Orbiter's ejection of a continuous 1-keV/50-mA electron beam along a field line. As the PDP flew by the beam, its plasma-wave instrument detected intense whistler-mode radiation originating from the beam. A detailed model has been developed of the coherent Cerenkov emission process, using a one-dimensional computer simulation of the beam to model the expected phase space structure of the electrons. The power calculated for the modeled 200-m beam segment can easily account for the measured whistler mode wave power.

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