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Optical Properties of Fluffy Particles

Published online by Cambridge University Press:  27 February 2018

R. Stognienko ,
Th. Henning  and
V. Ossenkopf
R. Stognienko
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions” Schillergäβchen 3, D-07745 Jena, Germany
Th. Henning
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions” Schillergäβchen 3, D-07745 Jena, Germany
V. Ossenkopf
Affiliation:
Max Planck Society, Research Unit “Dust in Star-forming Regions” Schillergäβchen 3, D-07745 Jena, Germany

Abstract

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For particles grown in the two limiting cases of coagulation (ballistic particle-cluster agglomeration and ballistic cluster-cluster agglomeration), lower and upper limits of the extinction at wavelengths from 1 μm to 1 mm are derived. The particle sizes are in the Rayleigh limit and the number of constituent grains in each particle is constant. Effective medium theories, the discrete dipole approximation and the discrete multipole method are applied to compute the optical behaviour of the coagulated particles. The spectral representation for inhomogeneous media is employed to investigate topology effects systematically.

Type
XI. Light Scattering
Information
International Astronomical Union Colloquium , Volume 150: Physics, Chemistry and Dynamics of Interplanetary Dust , 1996 , pp. 427 - 431
Copyright
Copyright © Astronomical Society of the Pacific 1996

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