We demonstrate a new approach for determining particle-size distribution in concentrated suspensions from spectral measurement of isotropic scattering coefficients by use of steady-state, continuous-wave photon-migration techniques. Successful recovery of particle-size distribution for TiO<sub>2</sub> suspensions in the form of log-normal functions is achieved through a regularized inverse algorithm, into which a synthesized scheme of Marquardt and Tikhonov regularizations has been incorporated. Our results for dense TiO<sub>2</sub> suspensions with three different particle concentrations are in excellent agreement with the size distribution as measured with x-ray sedimentation.
© 1998 Optical Society of America
Huabei Jiang, Guillermo Marquez, and Lihong V. Wang, "Particle sizing in concentrated suspensions by use of steady-state, continuous-wave photon-migration techniques," Opt. Lett. 23, 394-396 (1998)