Session EC17 - Scattering From Particles and Surfaces.
ORAL session, Monday morning, March 22
Room 263W, GWCC
The photon density and autocorrelation signal is measured for a turbid suspension of sub-micron spheres suspended in water in a cylinder with a length to diameter ratio of 5. In this experiment an incident laser beam travels up through the center of the sample and a moveable fiber optic probe measures the static and dynamic properties of the multiply scattered light. From this information the photon density is measured and compared to the predictions of Diffusing Wave Spectroscopy (DWS). Three experimental situations are studied, in two cases the cylinder consists of a glass walled vessel suspended in air and then in water, thus changing the reflectivity coefficient. In the third case the cylinder is made of an absorbing material. In each case the predictions of DWS in these differing situations are compared to our experimental results.