Backscattering spectroscopy applied to sizing particles in solution

VIDELA, F.; SCHINCA, D. C.; SCAFFARDI, L. B.

Isla Margarita, Venezuela

Congreso; 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers and Their Applications; 2004

SPIE, OSA

Optical backscattering spectroscopy offers instrumental advantages over fixed wavelength multiangle scattering measurements. We present results of  backscattering spectroscopy of calibrated spherical latex micro particles in aqueous solution when a beam of white light is incident on the sample. From Mie calculations and Fourier analysis, the radius of the particles can be retrieved, both in monomodal (single particle size present) and bimodal (two particle size present)  samples.