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The Ice and Silicate Spectral Features for Dust AggregatesThe optical properties of inhomogeneous aggregates of dust particles are calculated. The Discrete Dipole Approximation (DDA) is applied to the calculation of light scattering by the dust aggregates. The mixtures of ices and silicates are considered. The IR profiles near ice and silicate spectral features (3 micron and 10 micron) are constructed. The influence of grain topology, chemical composition and porosity have been investigated. The comparison of exact results for inhomogeneous aggregate and the effective medium theory (the rules of Maxwell-Garnett and Bruggeman) is made.
Document ID
19970007851
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Ilin, A. E. (Academy of Sciences (USSR) Saint Petersburg, USSR)
Date Acquired
August 17, 2013
Publication Date
October 1, 1996
Publication Information
Publication: From Stardust to Planetesimals: Contributed Papers
Subject Category
Astronomy
Accession Number
97N14472
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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