1. A T-MATRIX APPROACH FOR PARTICLES WITH SMALL-SCALE SURFACE ROUGHNESS.
- Author
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Kahnert, Michael and Rother, Tom
- Subjects
- *
PERTURBATION theory , *T-matrix , *MATHEMATICAL physics , *PARTICLES (Nuclear physics) , *SURFACE roughness , *CHEBYSHEV systems - Abstract
We combine group theory with a perturbation approach to perform T-matrix computations for particles with small-scale surface roughness up to size parameters of 70. The optical properties of high-order 3D-Chebyshev particles differ substantially from those of spheres. CPU times are reduced by more than 4-5 orders of magnitude by the use of group theory, while the perturbation approach circumvents the notorious ill-conditioning problems of the null-field method, thus allowing the treatment of large size parameters. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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