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Author(s):
M.M. Skoric, T. Sato, A. Maluckov and M.S. Jovanovic
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Title:
Complexity in Laser Plasma Instabilities
Date of publication:
Dec. 1999
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Key words:
ICF, laser plasmas, stimulated raman and brillouin scattering, self-organization
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Abstract:
High intensity laser interaction with a plasma exhibits a rich variety of strongly nonlinear plasma phenomena. In an underdense plasma, stimulated Raman scattering (SRS) and stimulated Brillouin Scattering (SBS) are two laser parametric instabilities of a greatest relevance. We show examples of isolated nonlinear SRS and SBS and discuss some of the experimental SRS anomalies that largely depart from the standard theory. As an example of a complex interplay between nonlinear SRS and SBS we show results of their anticorrelated behavior. Based on a concept of self-organization we put forward a simple model of SRS capable of reproducing basic experimentally observed anomalous features. Finally, we close with an example of fascinating new physics observed in SRS induced by an ultra-short pulse relativistic-intensity laser.
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