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Proceedings Paper

Determination of the optical constants of amorphous carbon in the EUV spectral region 40-450 eV
Author(s): Yu. A. Uspenskii; J. F. Seely; B. Kjornrattanawanich; D. L. Windt; Ye. A. Bugayev; V. V. Kondratenko; I. A. Artyukov; A. A. Titov; E. T. Kulatov; A. V. Vinogradov
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Paper Abstract

The extreme ultraviolet (EUV) optical constants δ(ω) and β(ω) of amorphous carbon were determined on the basis of transmission measurements at =18-450 eV, the first-principles calculation of the dielectric tensor at <25 eV, and the Kramers-Kronig calculation of δ(ω). Our optical constants generally agree with the CXRO data, excluding the vicinity of the K-edge. First-principles analysis shows that two thresholds of absorption (at 284 eV and 291 eV) found in the present study are caused, respectively, by the π- and σ- bonds. Their weights are controlled by an orientation of graphene sheets in a-carbon.

Paper Details

Date Published: 15 September 2006
PDF: 5 pages
Proc. SPIE 6317, Advances in X-Ray/EUV Optics, Components, and Applications, 631713 (15 September 2006); doi: 10.1117/12.683878
Show Author Affiliations
Yu. A. Uspenskii, Lebedev Physical Institute (Russia)
J. F. Seely, Naval Research Lab. (United States)
B. Kjornrattanawanich, Brookhaven National Lab. (United States)
D. L. Windt, Reflective X-ray Optics LLC (United States)
Ye. A. Bugayev, Kharkiv State Polytechnic Univ. (Ukraine)
V. V. Kondratenko, Kharkiv State Polytechnic Univ. (Ukraine)
I. A. Artyukov, Lebedev Physical Institute (Russia)
A. A. Titov, Prokhorov General Physics Institute (Russia)
E. T. Kulatov, Prokhorov General Physics Institute (Russia)
A. V. Vinogradov, Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 6317:
Advances in X-Ray/EUV Optics, Components, and Applications
Ali M. Khounsary; Christian Morawe, Editor(s)

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