Abstract

A method has been designed for use in absorption spectroscopy in which the simultaneous recording of the spectra of two diverse substances produces spectrum lines which extend in either the positive or negative sense from a “base” line, depending on the originating substance. Thus the spectrum is automatically sorted, and the identification of lines is unambiguous. The present paper describes the principles of operation of the Spectrum Sorter and its construction through the modification of a double beam infrared spectrometer. Also discussed are the application of the Spectrum Sorter principle to the handling of comparison spectra, to the identification of absorbing substances, and to the enhancement of resolution.

© 1954 Optical Society of America

Intensity Measurements in the Arc Spectrum of Nickel

Roland L. Heid and G. H. Dieke
J. Opt. Soc. Am. 44(5) 402-410 (1954)

Furn ace Spectrum of Plutonium

John G. Conway
J. Opt. Soc. Am. 44(4) 276-278 (1954)

On the Absorption Law for Samples of Nonuniform Concentration with Special Reference to the Spectroscopy of Irradiated Glasses*

Ian G. Ross
J. Opt. Soc. Am. 44(1) 40-44 (1954)

A Long Path Gas Absorption Cell

Robert G. Pilston and John U. White
J. Opt. Soc. Am. 44(7) 572-573 (1954)

Spectroscopy from the Point of View of Communication Theory. Part IV. Automatic Recording of Infrared Spectra on Punched Cards

Gilbert W. King, Elaine H. Blanton, and Joanna Frawley
J. Opt. Soc. Am. 44(5) 397-402 (1954)