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Author(s):
M.M. Skoric, T. Sato, A. Maluckov and M.S. Jovanovic
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Title:
Micro- and Macro-scale Self-organization in a Dissipative Plasma
Date of publication:
Oct. 1998
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Key words:
Nonlinear Waves, Self-Organization, Raman Complexity, Plasma Simulation
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Abstract:
We study a nonlinear three-wave interaction in an open dissipative model of stimulated Raman backscattering in a plasma. A hybrid kinetic-fluid scheme is proposed to include anomalous kinetic dissipation due to electron trapping and plasma wave breaking. We simulate a finite plasma with open boundaries and vary a transport parameter to examine a route to spatio-temporal complexity. An interplay between self-organization at micro (kinetic) and macro (wave/fluid) scales is revealed through quasi-periodic and intermittent, evolution of dynamical variables, dissipative structures and related entropy rates. An evidence that entropy rate extrema correspond to structural transitions is found.
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