dc.creator Robertson, Charles W. en_US dc.date.accessioned 2006-06-15T13:32:18Z dc.date.available 2006-06-15T13:32:18Z dc.date.issued 1972 en_US dc.identifier 1972-L-3 en_US dc.identifier.uri http://hdl.handle.net/1811/9050 dc.description Supported in part by the National Aeronautics and Space Administration. $^{1}$C.W.Robertson and D.Williams, J.Opt.Soc.Am.61, 1361 (1971)."" en_US dc.description Author Institution: Department of Physics, Kansas State University Manhattan en_US dc.description.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 of $NH_{3}$ in condensed states. We have attempted to obtain these constants for liquid $NH_{3}$ by quantitative measurements of spectral reflectance and spectral absorptance. Spectral reflectance at near-normal incidence was measured from 5100 to $350 cm^{-1}$ by comparing the reflection at a free liquid surface with reflection from a plane reference mirror, the mirror’s reflectance having been measured in an auxiliary reflectometer. The Lambert absorption coefficients for liquid $NH_{3}$ from 7000 to $980 cm^{-1}$ were determined by the methods used in our earlier study of $water.^{1}$ The imaginary part of $n_{i}$ of the refractive index was determined directly from the Lambert coefficients. From the spectral reflectance data and $n_{i}$, the real part $n_{r}$ of the refractive index can be determined from the Fresnel equation. Values of $n_{i}$ and $n_{r}$ can also be determined from an analysis of the spectral reflectance data using the Kramers-Kroning relations. There was close agreement between the $n_{r}$ values determined by the two methods. en_US dc.format.extent 158019 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title THE REFLECTION AND ABSORPTION SPECTRUM OF LIQUID AMMONIA IN THE INFRARED en_US dc.type article en_US
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