Inelastic light scattering measurements of capillary wave frequency and damping in the kHz range for several solutions of sodium carboxymethylcellulose in redistilled water are reported. The capillary waves were thermally excited and had extremely low amplitudes. Light beating spectroscopy was used. For these solutions the capillary wave damping was very much lower than expected from hydrodynamic theory. A surface zone theory is proposed to interpret the experimental results.
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Hammarlund et al. (1973) studied this question.
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