The electron beam instability and turbulence theoriesExtensions and practical applications of recent observations of electron beam-plasma interactions are investigated for the range of turbulence theories, extending from quasi-linear to strong turbulence theory, which have been developed on the basis of the Langmuir-wave excitation model. Electron foreshock observations have indicated that linear instability theory must encompass the excitation of waves whose frequencies are substantially different from those of the plasma frequency; the point of departure for such extensions should be a quantitative test of existing theories, and particle simulations conducive to such testing are presented. A step-by-step addition of physical considerations is used in such simulation studies to differentiate among nonlinear turbulence effects.
Document ID
19910048389
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Dum, C. T. (Max-Planck-Institut fuer Physik und Astrophysik Garching, Federal Republic of Germany, United States)