# Discrete-Dipole Approximation For Scattering Calculations

@article{Draine1994DiscreteDipoleAF, title={Discrete-Dipole Approximation For Scattering Calculations}, author={Bruce T. Draine and Piotr J. Flatau}, journal={Journal of The Optical Society of America A-optics Image Science and Vision}, year={1994}, volume={11}, pages={1491-1499} }

The discrete-dipole approximation (DDA) for scattering calculations, including the relationship between the DDA and other methods, is reviewed. Computational considerations, i.e., the use of complex-conjugate gradient algorithms and fast-Fourier-transform methods, are discussed. We test the accuracy of the DDA by using the DDA to compute scattering and absorption by isolated, homogeneous spheres as well as by targets consisting of two contiguous spheres. It is shown that, for dielectric…

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