Zero-angle depolarized light scattering of a colloidal polymer |
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| Authors: | Paul S. Russo Mary J. Saunders L.Mark DeLong Scott Kuehl Kenneth H. Langley Robert W. Detenbeck |
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| Affiliation: | Macromolecular Studies Group, Louisiana State University, Baton Rouge, La 70803 U.S.A.;Departments of Physics and Astronomy, and Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003 U.S.A.;Department of Physics, University of Vermont, Burlington, VT 05405 U.S.A. |
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| Abstract: | The potential of zero-angle depolarized scattering for measuring the size distributions of optically anisotropic particles is considered. To illustrate the method, an analysis of Fluon, a teflon latex suspension, is presented. Homodyne correlation functions having signal-to-noise characteristics every bit as good as conventional unpolarized finite-angle measurements enabled confident application of a smoothed exponential sampling algorithm to obtain the decay rate distribution, which was converted to a size distribution with certain approximations. The size distribution obtained from light scattering agrees well with that from electron microscopy. |
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