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Rescattering of stimulated Raman side scattering in nonuniform plasmas
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作者 S.Tan Q.Wang +3 位作者 Y.Chen w.b.yao C.Z.Xiao J.F.Myatt 《Matter and Radiation at Extremes》 SCIE EI CSCD 2024年第5期68-76,共9页
Rescattering of stimulated Raman side scattering(SRSS)is observed for the first time via two-dimensional(2D)particle-in-cell(PIC)simulations.We construct a theoretical model for the rescattering process,which can pred... Rescattering of stimulated Raman side scattering(SRSS)is observed for the first time via two-dimensional(2D)particle-in-cell(PIC)simulations.We construct a theoretical model for the rescattering process,which can predict the region of occurrence of mth-order SRSS and estimate its threshold.The rescattering process is identified by the 2D PIC simulations under typical conditions of a direct-drive inertial confinement fusion scheme.Hot electrons produced by second-order SRSS propagate nearly perpendicular to the density gradient and gain nearly the same energy as in first-order SRSS,but there is no cascade acceleration to produce superhot electrons.Parametric studies for a wide range of ignition conditions show that SRSS and associated rescatterings are robust and important processes in inertial confinement fusion. 展开更多
关键词 NONUNIFORM ACCELERATION SCATTERING
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