LIGHT-SCATTERING FROM POLYMER-FILMS HAVING OPTICALLY ANISOTROPIC RODLIKE TEXTURE .2. PRINCIPLE TO ESTIMATE ITS SIZE

The theory for estimating the size of isotropic rodlike particles dispersed randomly in space was extended to anisotropic rodlike particles. The scattering from a random assembly of the anisotropic rods is more complex than that of the isotropic rods in that the angular dependence of the scattering depends upon the manner of orientation of the optical axes of anisotropic scattering elements as well as size of the rod. In order to evaluate size of the rod, one has to separate these two contributions. It is shown that relative intensity distribution of the intensity difference at mu equals 0 degree and 45 degree depends only upon size, and is identical to that of isotropic rods of the same size at large scattering angles.