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Scattering Calculations on the Basis of the Fredholm Integral Equation Method

Published online by Cambridge University Press:  12 April 2016

M. Matsumura  and
M. Seki
M. Matsumura
Affiliation:
Astronomical Institute, Tohoku UniversitySendai 980, Japan
M. Seki
Affiliation:
College of General Education, Tohoku University Kawauchi, Sendai 980, Japan

Abstract

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The Fredholm integral equation method (FIM) is one of the solutions to the soattering of electromagnetic radiation by homogeneous and isotropio ellipsoidal particles. Some numerical calculations are performed with the FIM. The results for spherical particles are compared with those by the Mie theory. It is confirmed that the agreement between them is satisfactory for all the models calculated.

On the basis of the present method, we examine profiles of the absorption band around »= 10 μm for spherical and ellipsoidal particles composed of crystalline olivine. It is found that the profile strongly depends on the shape of the particle. Even when the particle is moderately elongated (axial ratios are 2: √2:1), the profile is Signifioantly different from that for a sphere.

Type
Interplanetary Dust: Zodiacal Light and Optical Studies
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 203 - 206
Copyright
Copyright © Kluwer 1991

References

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