Simulation and alteration for amorphous silicates with very broad bands in infrared spectra

Details Simulation and alteration for amorphous silicates with very broad bands in infrared spectra Simulation and alteration for amorphous silicates with very broad bands in infrared spectra

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.255..248k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 255, March 15, 1992, p. 248-254.

Other

21

Amorphous Materials, Cosmic Dust, Halley'S Comet, Infrared Spectra, Silicates, Astronomical Spectroscopy, Interstellar Chemistry, Olivine, Spectral Bands

Scientific paper

Amorphous silicates were synthesized by evaporation of olivine and pyroxene. It is found that amorphous condensates of olivine have nearly the same composition as source olivine. They show two very broad bands at wavelengths of 10-11 and 18-19 microns in their infrared spectra. The 18-microns band is very unstable, that is, it easily shifts to longer wavelengths by heating or hydration. On the other hand, amorphous condensates of pyroxene were enriched in Si compared with source pyroxene and showed two bands at about 9.5 and 22-23 microns.

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