NEW APPROXIMATE PHASE FUNCTIONS FOR SCATTERING OF UNPOLARIZED LIGHT BY DIELECTRIC PARTICLES |
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| Authors: | S.K. SHARMA ASHIM KUMAR ROY D.J. SOMERFORD |
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| Affiliation: | †S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Bidhan Nagar, Calcutta 700 091, India;§Physics and Applied Mathematics Unit, Indian Statistical Institute, 203 B T Road, Calcutta 700 035, India;¶Department of Physics and Astronomy, University of Wales College of Cardiff, P.O. Box 913, Cardiff, Wales, UK |
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| Abstract: | We present two new phase functions, one for particles small compared to the wavelength of the scattering radiation and the other for particles large compared to the wavelength of the scattering radiation. These phase functions have been validated for the case of Mie scatterers. For small particles, the results of the new phase function are found to be identical with the Mie results. For large particles, comparison with the Mie results show that the phase function presented here is an extremely good approximation to the Mie phase function. We believe that these phase functions can be expediently used in problems relating to solutions of the radiative transfer equations. |
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