Nonlinear saturation of stimulated Brillouin scattering for long time scales

被引：32

作者：

Divol, L ^{[1
]}

Cohen, BI ^{[1
]}

Williams, EA ^{[1
]}

Langdon, AB ^{[1
]}

Lasinski, BF ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

PHYSICS OF PLASMAS | 2003年 / 10卷 / 09期

关键词：

D O I：

10.1063/1.1601223

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The nonlinear saturation of stimulated Brillouin scattering (SBS) in long beryllium plasmas (500 mum) and for long time (500 ps) is studied in detail through well-diagnosed one-dimensional (1D) hybrid particle-in-cell (PIC) simulations done using BZOHAR [B. I. Cohen, B. F. Lasinski, A. B. Langdon, and E. A. Williams, Phys. Plasmas 4, 956 (1997)]. Under conditions of interest, when the linear gain associated with the SBS growth is large, it is shown that following a first phase of large and bursty SBS reflectivity, SBS is suppressed by a self-induced spatial detuning due to inhomogeneous modifications of the (locally averaged) ion distribution function. This nonlinear evolution was observed over a range of laser intensities and plasma parameters. (C) 2003 American Institute of Physics.

引用

页码：3728 / 3732

页数：5

共 26 条

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