Abstract

He–Ne laser scattering intensity distributions to approximately 10° have been obtained for a class of single-oriented semiopaque pollen species 20 to 100 μm in size. Because of the three-dimensional structure of the particle, pattern centrosymmetry fails initially at low scattering angles where particle diffraction intensity dominates. Thus the flat-particle assumption used to interpret randomly oriented particle scattering is not strictly applicable to oriented particles. Nevertheless, Fraunhofer diffraction from the flat particle is on the average a good approximation to the position and shape of at least the first several intensity maxima.

© 1985 Optical Society of America

Forward-scattering corrected extinction by nonspherical particles

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