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Laboratory Measurements on the Infrared Features of Interstellar Silicate Grains

Published online by Cambridge University Press:  14 August 2015

W. Krätschmer
W. Krätschmer*
Affiliation:
Max-Planck-Institut für Kernphysik, Postfach 10 39 80, 6900 Heidelberg − 1 (FRG)

Abstract

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Thin layers of an amorphous silicate coating were obtained by ion sputtering of crystalline olivine on KBr substrates. The dielectric functions of the coating were determined from reflection and transmission measurements in the wavelength range between 5 and 25 μ. The small particle extinction of the amorphous silicate shows a strong feature at 9.7 μ and a weaker one at 17.5 μ. In wavelength position both absorption bands agree with astronomically observed features.

Type
IV: The Interplanetary Dust Complex 2. Physical Properties
Information
Symposium - International Astronomical Union , Volume 90: Solid Particles in the Solar System , 1980 , pp. 351 - 354
Copyright
Copyright © Reidel 1980 

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