Physics – Optics
Scientific paper
Jul 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.193..317s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 193, no. 2, July 1992, p. 317-328.
Physics
Optics
3
Electromagnetic Radiation, Electromagnetic Scattering, Geometrical Optics, Mie Scattering, Spheres, Wave Diffraction, Dielectric Properties, Polystyrene, Radiation Pressure, Refractivity, Silicon Oxides
Scientific paper
The usefulness of the classical geometrical optics and diffraction (GOD) is illustrated for scattering of electromagnetic radiation by very large dielectric and absorbing spheres. Various scattering parameters such as extinction efficiency, asymmetry parameter, radiation pressure, etc., have been calculated on the basis of GOD and compared with the equivalent results obtained as per the Mie theory. The spheres are assumed to be composed of pure and impure silicatelike or polystyrene material in the visual wavelengths. It is shown that the asymptotic values of a given scattering parameter obtained from the Mie theory calculations agree reasonably well with the corresponding result based on GOD.
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