Abstract
A nonlinear, reduced description of the saturated steady-state turbulence resulting from the two-plasmon decay instability is shown to lead to Langmuir wave and $\frac{3}{2}{\ensuremath{\omega}}_{0}$ radiation spectra which are in semiquantitative agreement with recent experimental observations of Meyer et al. [Phys. Rev. Lett. 71, 2915 (1993)]. Secondary Langmuir wave decay of the primary unstable waves is shown to be an important process for moderate laser intensities while strong turbulence effects are observed for higher intensities.
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