Abstract

Computer simulations and theory are used to illustrate the linear and nonlinear behavior or Raman backward and forward scattering in laser-irradiated plasmas. The heated-electron distributions, nonlinear Landau damping, bandwidth of the scattered light, and other results of nonlinear simulations in homogeneous and nonhomogeneous plasmas are described. The characteristics of Raman scattering in a plasma with a quite high background temperature (64 keV) are examined, which are relevant to CO2-heated plasmas. Finally the effects of self-generated magnetic fields are pointed out, which can reduce Raman scattering by inhibiting the transport of hot electrons, and the reduction of Raman scattering by use of laser light with a large bandwidth is described.

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