Optical Properties of Strongly Absorbing Media Determined by External Reflection Spectroscopy

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Reflection spectra of opaque samples recorded at different angles of incidence and for both polarizations were used to evaluate the optical constants. A subsequent classical oscillator fitting analysis of these spectra provided the dispersion of the refractive index and the absorption index for cuprous ethyl and butyl xanthate complexes across the midinfrared region. The advantages of recording spectra under certain conditions are discussed.

Keywords: External reflection spectroscopy; Infrared spectroscopy; Optical constants

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702924124295

Affiliations: 1: Department of Mining and Mineral Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24060; present address: Institut Nationale Polytechnique de Lorraine, Ecole Nationale Superieure de Geologie de Nancy, U.A. 235 du CNRS, Rue du Doyen, Marcel Roubault B.P. 40, 54501 Vandoeuvre-les-Nancy, France 2: Harrick Scientific Corporation, P.O. Box 1288, 88 Broadway, Ossining, New York 10562

Publication date: June 1, 1992

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