On the Validity of the Anomalous Diffraction Theory to Light-Scattering by Cubes

Citation:
Maslowska, A, Flatau PJ, Stephens GL.  1994.  On the Validity of the Anomalous Diffraction Theory to Light-Scattering by Cubes. Optics Communications. 107:35-40.

Date Published:

Apr

Keywords:

absorption, discrete-dipole approximation, grains, nonspherical particles, radiation

Abstract:

The extinction and absorption efficiencies of a cube at light incidence normal to its four-fold symmetry axis are calculated using the anomalous diffraction theory (ADT). The results are compared with those based on the discrete dipole approximation (DDA). It is shown that for certain cases of the orientation of a cube relative to the direction of the incident light the extinction efficiency calculated using DDA and ADT do not agree. However, the ADT-based absorption efficiencies for the cases studied are dependent on a particle volume and exhibit smaller errors. Hence the validity of the ADT for cubes is not as good as for spheres.

Notes:

n/a

Website

DOI:

10.1016/0030-4018(94)90099-x