Abstract:
In laser indirect-drive inertial confinement fusion (ICF), the interaction of high-intensity laser and under-dense plasmas will excite two stimulated scattering processes: stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS). These processes are detrimental to ignition since they consume laser energy, break symmetry of the X-ray radiation, and produce energetic electrons. Therefore, comprehending the basic physics of the stimulated scattering processes and hence finding effective approaches to suppress them are great concerns in ICF research. This article introduces several theoretical models developed by Chinese researchers for studying stimulated scattering processes, as well as their applications in analysis of experimental data. These theoretical models, together with the experiments, play important roles in improving the physical understanding of the stimulated scattering processes.
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