SATURATION OF STIMULATED RAMAN-SCATTERING BY THE EXCITATION OF STRONGLANGMUIR TURBULENCE

Numerical studies of a model of stimulated Raman scattering (SRS) coup led to Langmuir turbulence show that once the collisional threshold is exceeded for parametric decay of the SRS daughter Langmuir wave the n oncollisional dissipation resulting from Langmuir collapse can strongl y saturate the Langmuir wave and the resulting SRS reflectivity. The m odel provides information on the total rate of hot electron generation . Scaling laws for the reflectivity as a function of laser and plasma parameters are found.