Abstract

Optical constants for tungsten measured ellipsometrically at room temperature in the visible spectrum are reported. Results are given for (011)-oriented tungsten characterized as clean by low-energy-electron diffraction, for the same surface saturated with oxygen, and for the surface after exposure to air at atmospheric pressure for several hours. Results are compared with earlier work and differences are attributed primarily to differences of surface contamination.

© 1971 Optical Society of America

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