Optical properties of fine amorphous carbon grains in the infrared region

Details Optical properties of fine amorphous carbon grains in the infrared region Optical properties of fine amorphous carbon grains in the infrared region

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.172...21m&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 172, no. 1, Oct. 1990, p. 21-28.

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Carbon, Infrared Astronomy, Interstellar Matter, Optical Properties, Stellar Envelopes, Computational Astrophysics, Fine Structure, Interstellar Extinction, Stellar Spectra

Scientific paper

It is suggested that not extinction efficiencies but optical constants are needed for modeling of the emission properties of grains containing allotropic carbons. The optical constants of amorphous carbons in the range of 1 to 280 micron are derived by using absorption efficiencies measured for particles produced by arc discharge and collected at 7 cm from it. A quantitative analysis of the extinction due to amorphous carbon, calculated with the real and imaginary part of the complex refractive index is presented, and it is noted that the derived optical properties are in a satisfactory agreement with laboratory measurements.

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