Multiple-scattering suppression by cross correlation
نویسندگان
چکیده
منابع مشابه
Multiple-scattering suppression by cross correlation.
We describe a new method for characterizing particles in turbid media by cross correlating the scattered intensity fluctuations at two nearby points in the far field. The cross-correlation function selectively emphasizes single scattering over multiple scattering. The usual dynamic light-scattering capability of inferring particle size from decay rate is thus extended to samples that are so tur...
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By studying cross correlations in the intensity of light scattered by a fluid sample in different directions at different times, it is possible to measure the dynamic scattering function S(k,t) for the fluid. The multiple scattering contribution to the time-dependent cross correlations is very substantially less than the multiple scattering contribution to S(k,t) as obtained by a conventional s...
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Multiple scattering becomes a problem close to the critical point, especially in systems with a large difference in the refractive index and large correlation length amplitudes as for the case of polystyrene/cyclohexane. In this work we demonstrate the application of the one-beam cross correlation technique and show that in the reduced temperature range of t red51.66310 25 – 0.03 the multiple s...
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Accurate characterization using static light scattering (SLS) and dynamic light scattering (DLS) methods mandates the measurement and analysis of singly scattered light. In turbid samples, the suppression of multiple scattering is therefore required to obtain meaningful results. One powerful technique for achieving this, known as 3D cross-correlation, uses two simultaneous light scattering expe...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 1997
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.36.007551