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Thomson-scattering measurements of ion fluctuations driven by stimulated Brillouin scattering in a CO₂-laser-plasma interaction experiment are reported. It is found that the ion fluctuations correspond to a heavily damped, convective model of the Brillouin instability. The dominant 2k₀ wave number (k₀ is the CO₂-laser wave number) for the ion fluctuations is confirmed, with no evidence for harmonic generation. Growth and decay times of the ion fluctuations were found to be relatively long, {~}150-700 ps, consistent with heavy wave damping.
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Giles et al. (1983) studied this question.
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