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Strongly turbulent stabilization of electron beam-plasma interactionsThe stabilization of electron beam interactions due to strongly turbulent nonlinearities is studied analytically and numerically for a wide range of plasma parameters. A fluid mode coupling code is described in which the effects of electron and ion Landau damping and linear growth due to the energetic electron beam are included in a phenomenological manner. Stabilization of the instability is found to occur when the amplitudes of the unstable modes exceed the threshold of the oscillating two-stream instability. The coordinate space structure of the turbulent spectrum which results clearly shows that soliton-like structures are formed by this process. Phenomenological models of both the initial stabilization and the asymptotic states are developed. Scaling laws between the beam-plasma growth rate and the fluctuations in the fields and plasma density are found in both cases, and shown to be in good agreement with the results of the simulation.
Document ID
19800046372
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Freund, H. P.
(Science Applications, Inc. McLean, Va., United States)
Haber, I.
(Science Applications, Inc. McLean, VA, United States)
Palmadesso, P.
(Science Applications, Inc. McLean, VA, United States)
Papadopoulos, K.
(U.S. Navy, Naval Research Laboratory, Washington D.C., United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1980
Publication Information
Publication: Physics of Fluids
Volume: 23
Subject Category
Plasma Physics
Accession Number
80A30542
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-14365
Distribution Limits
Public
Copyright
Other

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