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Proceedings Paper

Optical studies of nitrogen-doped amorphous carbon: laboratory and interstellar investigations
Author(s): James H. Kaufman; Serhat Metin; David D. Saperstein
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Paper Abstract

Measurements of plasma generated amorphous carbon films (a:C-II and A:C) in our laboratory show that nitrogen doping of the carbon imparts infrared activity to the films. In particular, the Raman G and D bands which are infrared inactive in typical amorphous carbons become active when nitrogen is substituted for carbon. This increase in infrared activity is attributed to a symmetry breaking by the nitrogen centers. In this paper we show that this symmetry breaking also gives rise to increases infrared emission. We suggest this same mechanism may be relevant to the origin of diffuse interstellar infrared emission from carbonaceous dust.

Paper Details

Date Published: 1 April 1991
PDF: 6 pages
Proc. SPIE 1437, Applied Spectroscopy in Material Science, (1 April 1991); doi: 10.1117/12.45128
Show Author Affiliations
James H. Kaufman, IBM/Almaden Research Ctr. (United States)
Serhat Metin, IBM/Almaden Research Ctr. (United States)
David D. Saperstein, IBM/Almaden Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1437:
Applied Spectroscopy in Material Science
David D. Saperstein, Editor(s)

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