THE ABSORPTION SPECTRUM OF SOLID AMMONIA IN THE INFRARED
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Date
1973
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Ohio State University
Abstract
In view of the importance of $NH_{3}$ in the atmospheres of the major planets, there is a need for knowledge of the optical constants for $NH_{3}$ in condensed states. We have attempted to obtain these constants for solid $NH_{3}$ by quantitative measurements of the spectral absorptance. The Lambert absorption coefficients for solid $NH_{3}$ from 5200 - $970 cm^{-1}$ were determined by the method used in our earlier study of $water.^{1}$ The imaginary part $n_{i}$ of the refractive index was determined directly from the Lambert coefficients. Values of $n_{r}$ can be determined from an analysis of the spectral absorptance using the Kramers-Kronig relations.
Description
This research was supported in part by the National Aeronautics and Space Administration. $^{1}$ C.W. Robertson and D. Williams, J. Opt. Soc. Am., 61, 1316, (1971).
Author Institution: Department of Physics, Kansas State University
Author Institution: Department of Physics, Kansas State University