Abstract
Stimulated Raman scattering near the quarter critical density saturates by two different mechanisms. The first is the high-energy electrons generated by Landau damping of plasma waves and the other is plasma density profile modification by the ponderomotive force of plasma waves. Simulations were performed with a one-and-a-half dimensional relativistic electromagnetic particle code to investigate those mechanisms and the pulsation dynamics of the scattered wave found. Finally, simulation results are compared with a simple theoretical model.
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