Suppression of multiple scattered light by photon cross-correlation in a 3D experiment

  • L. B. Aberle
  • S. Wiegand
  • W. Schröer
  • W. Staude
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 104)


In strongly scattering media, the presence of multiple scattered light prevents the straight-forward interpretation of photon-auto correlation functions in terms of single scattering processes. In order to suppress the influence of multiple scattering Schätzel suggested a socalled 3-D cross-correlation technique. This technique operates by cross-correlating the intensities of the scattered light of two coherent laser beams illuminating the same scattering volume and so defining two scattering geometries. The cross-correlation function is identical to the auto-correlation function from single scattering if the scattering vector q is chosen to be identical for both scattering geometries. Based on this idea an experimental set-up has been developed, which appears to be a fairly simple modification of a conventional light scattering experiment. Test measurements with solutions of standard latex particles with a diameter of 109 nm at various concentrations show, that contributions due to multiple scattering are well suppressed even in the range of strong multiple scattering.

Key words

Dynamic light scattering multiple scattering cross-correlation 


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Copyright information

© Steinkopff Verlag 1997

Authors and Affiliations

  • L. B. Aberle
    • 1
  • S. Wiegand
    • 1
  • W. Schröer
    • 1
  • W. Staude
    • 2
  1. 1.Institut für Anorganische und Physikalische Chemie Fachbereich 2 Biologie-ChemieUniversität BremenBremenGermany
  2. 2.Institut für Experimental-PhysikUniversität BremenBremenGermany

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