Recent laboratory investigations of space-simulated electron-beam-plasma interactions have concentrated on the transition from single-particle behavior to collective plasma processes with emphasis on the beam-plasma discharge. The plasma has been characterized with respect to its spatial distributions in density, temperature, and density fluctuation power spectra. The latter results have been further classified in terms of amplitude and spectral distributions. The overall results include detailed radial profiles of plasma density as a function of beam parameters; association of low-frequency large-amplitude fluctuations with ion acoustic, ion cyclotron, and drift-wave modes; identification and spatial mapping of suprathermal electrons in the beam core; and experimental definition of a density-dependent criterion for the ignition of the beam-plasma discharge. The data provide a synoptic perspective on accumulated rocket observations and meaningfully contribute to planning activities for future space-borne applications of artificially injected energetic electron beams.


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    Title :

    Laboratory simulations of controlled energetic electron-beam-plasma interactions in space


    Additional title:

    Labor-Simulationsversuche der geregelten energetischen Wechselwirkung von Elektronenstrahlen und Plasmastroemung im Weltraum


    Contributors:

    Published in:

    AIAA Journal ; 21 , 10 ; 1374-1381


    Publication date :

    1983


    Size :

    8 Seiten, 12 Bilder, 31 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English