Abstract

As laser fusion evolves into high intensity and long scale length experiments, stimulated Brillouin scattering 1,2 (SBS) may prove to be a large factor in the overall laser-plasma coupling efficiency. Past experiments with prepulses on solid targets showed greatly enhanced Brillouin backscatter due to the longer plasma scale lengths.3 It may be that the severity of Brillouin back-scatter is ultimately determined by the saturation level of the SBS-driven ion acoustic wave.

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