The Determination of Infra-Red Absorption Spectra from Reflection Measurements

Abstract

The theory of infra-red reflection spectra has been applied (i) to obtain the frequencies and extinction coefficients of the intense absorption bands in polytetrafluorethylene near 8.5 microns, (ii) to determine the number and states of polarization of the fundamental NH stretching absorption bands in a crystal of urea. The reflection method has definite advantages over transmission measurements in both cases.