Modelling diffraction by facetted particles |
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| Authors: | E Hesse A Macke S Havemann AJ Baran Z Ulanowski PH Kaye |
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| Institution: | 1. University of Hertfordshire, Centre for Atmospheric and Instrumentation Research, Hatfield, Hertfordshire AL10 9AB, UK;2. Leibniz-Institut für Troposphärenforschung e.V., Permoserstraße 15, 04318 Leipzig, Germany;3. Met Office, Cordonan 2, Fitzroy Road, Exeter EX13 PB, UK |
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| Abstract: | A method to approximate azimuthally resolved light scattering patterns and phase functions due to diffraction and external reflection by strongly absorbing facetted particles is demonstrated for a cube and compared with results from an exact method, T-matrix. A phase function averaged over a range of orientations of a strongly absorbing hexagonal column of aspect ratio unity has been calculated and tested against Discrete Dipole Approximation (DDA) results for a size parameter of 50. |
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