Dynamic Light Scattering In Subdiffusive Regimes
For describing the fluctuating signal scattered from a multiple-scattering system, diffusive-wave spectroscopy a specific geometry. Using the recently introduced optical path-length spec makes use of a diffusion model that provides the path-length distribution of scattered waves fortroscopy, we show that the diffusion model fails to describe wave propagation in the low-order multiple-scattering regime. We propose a new methodology with which to obtain information about the dynamic properties of nondiffusive scattering systems. We use optical path-length spectroscopy to obtain experimentally the pathlength distribution of optical waves scattered from dynamic colloids, which are multiply scattering but not in the diffusion limit. The experimental results show that, with this new technique, the accuracy of dynamic measurements is significantly improved in subdiffusive scattering regimes. © 2001 Optical Society of America.
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Popescu, Gabriel and Dogariu, Aristide, "Dynamic Light Scattering In Subdiffusive Regimes" (2001). Scopus Export 2000s. 196.