Three-Dimensional Modeling of Stimulated Brillouin Scattering in Ignition-Scale Experiments

Journal Article · Fri Jun 27 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.255001· OSTI ID:21134075

Divol, L; Berger, R L; Meezan, N B; Froula, D H; Dixit, S; Suter, L J; Glenzer, S H ^[1]

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1. L-399, Lawrence Livermore National Laboratory, University of California, P.O. Box 808, Livermore, California 94551 (United States)

The first three-dimensional simulations of a high power 0.351 {mu}m laser beam propagating through a high temperature hohlraum plasma are reported. We show that 3D fluid-based modeling of stimulated Brillouin scattering, including linear kinetic corrections, reproduces quantitatively the experimental measurements, provided it is coupled to detailed hydrodynamics simulation and a realistic description of the laser beam from its millimeter-size envelope down to the micron scale speckles. These simulations accurately predict the strong reduction of stimulated Brillouin scattering measured when polarization smoothing is used.

• OSTI ID: 21134075
• Journal Information: Physical Review Letters, Vol. 100, Issue 25; Other Information: DOI: 10.1103/PhysRevLett.100.255001; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BRILLOUIN EFFECT
HYDRODYNAMICS
LASERS
MATHEMATICAL MODELS
PLASMA
POLARIZATION
SIMULATION
THREE-DIMENSIONAL CALCULATIONS