The Physical Basis for Analysis of the Depth of Absorbing Species Using Internal Reflection Spectroscopy

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Internal reflection spectroscopy is discussed for a nonuniform distribution of an absorbing species. Although some distributions cannot experimentally be distinguished from others, if one assumes a distribution, information about depth and concentration can be obtained by making measurements at several angles of incidence. A practical method is proposed and demonstrated for obtaining thickness and concentration for an assumed step profile.

Keywords: Infrared spectroscopy; Internal reflection spectroscopy

Document Type: Research Article


Affiliations: Bell Telephone Laboratories, 6200 E. Broad Street, Columbus, Ohio 43213

Publication date: July 1, 1974

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