Angularly resolved light scattering from aerosolized spores: observations and calculations |
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Authors: | Auger Jean-Claude Aptowicz Kevin B Pinnick Ronald G Pan Yong-Le Chang Richard K |
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Institution: | Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA. |
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Abstract: | Angularly resolved elastic light scattering patterns from individual aerosolized Bacillus subtilis spores were qualitatively compared with simulations. Two-dimensional angular optical scattering patterns of the spores were collected for polar scattering angles varying from approximately 77 degrees to 130 degrees and azimuthal angles varying from 0 degrees to 360 degrees . Computations were performed with single T-matrix formalism by simulating a spore with three different particle shapes: (1) a finite-length cylinder with spherical end caps, (2) a spheroid, and (3) two spheres in contact. Excellent agreement between computation and measurement was found for the finite-length cylinder with spherical end caps, poorer agreement was found for the spheroids, and the poorest agreement was for the two spheres in contact. |
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