Theoretical Investigations on the Light Scattering of Colloidal Spheres. VIII. Angular Location of Intensity Maxima and Minima in the Radiation Diagram of Colloidal Spheres

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Abstract
The angular position of scattering maxima and minima in the radiation diagram of nonabsorbing colloidal spheres is calculated for (m—1)→0 and for m=1.20, by using in the former case the Rayleigh‐Gans approximation and in the latter the exact Mie scattering functions. By means of empirical equations based upon the discrepancies between the Rayleigh‐Gans data and the Mie data, the approximate location of scattering maxima and minima is calculated also for the m values 1.05, 1.10, 1.15, 1.25, and 1.30. The expected precision and accuracy of particle size determinations from the angular location of scattering maxima and minima is discussed and the minimum angular ranges to be covered in a given instance are defined. A few pertinent features of the related La Mer method (HOTS) are briefly discussed.