Enhanced backscattering from random media with multiple suspensions

Experiment is reported of enhanced backscattering of light in binary and te rnary suspensions of rutile and/or alumina particles. With a conventional C CD camera system for observing the phenomena, the angular line shape and th e enhancement factor were agreed with the theoretically predicted curve and value. Observation of the angular distribution scattered at the backscatte red direction supported the hypothesis proposed by Pine et al., in which th e transport mean free path of the polydisperse mixture can be expressed in terms of summing its reciprocal values weighted over the particle sizes.