Optical constants of ammonium sulfate in the infrared
Abstract
The infrared spectral reflectance at near normal incidence has been measured for 3.2 M, 2.4 M, and 1.6 M solutions of ammonium sulfate, an aerosol abundant in the stratosphere and also present in the troposphere. Kramers-Kronig analysis was used to determine values of the refractive and absorption indices from the measured spectral reflectance. A synthetic spectrum of crystalline ammonium sulfate was obtained by extrapolation of the absorption index obtained for the solution to the absorber number densities of the NH4 and SO4 ions characteristic of the crystal.
- Publication:
-
Journal of the Optical Society of America (1917-1983)
- Pub Date:
- February 1977
- DOI:
- 10.1364/JOSA.67.000186
- Bibcode:
- 1977JOSA...67..186D
- Keywords:
-
- Absorptance;
- Aerosols;
- Ammonium Sulfates;
- Infrared Radiation;
- Refractivity;
- Spectral Reflectance;
- Infrared Spectra;
- Single Crystals;
- Stratosphere;
- Geophysics