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Phys Rev Lett. 2000 Aug 14;85(7):1416-9.

Space intensity correlations in the near field of the scattered light: A direct measurement of the density correlation function g(r)

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  • 1Dipartimento di Fisica and Istituto Nazionale per la Fisica della Materia, Universita di Milano, via Celoria 16, 20133 Milano, Italy.


We show that the two point intensity correlation in the near field of the scattered light is directly related to the two point density correlation g(r). Preliminary measurements on two sets of calibrated random pinholes of 140 and 300 &mgr;m diameters, and on aqueous solutions of latex spheres of 5, 10, and 40 &mgr;m are reported. A discussion on the desirability of the technique as a simple and powerful alternative to low angle scattering will be presented.

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