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Record Details

Record 12 of 940
Infrared optical constants of H2O ice, amorphous nitric acid solutions, and nitric acid hydrates
External Online Source: doi:10.1029/94JD02388
Author and Affiliation:
Toon, Owen B.(NASA Ames Research Center, Moffett Field, CA, United States)
Koehler, Birgit G.(University of Colorado, Boulder, CO, United States)
Middlebrook, Ann M.(University of Colorado, Boulder, CO, United States)
Tolbert, Margaret A.(University of Colorado, Boulder, CO, United States)
Jordon, Joseph(Sterling Software Inc., Palo Alto, CA, United States)
Abstract: We determined the infrared optical constants of nitric acid trihydrate, nitric acid dihydrate, nitric acid monohydrate, and solid amorphous nitric acid solutions which crystallize to form these hydrates. We have also found the infrared optical constants of H2O ice. We measured the transmission of infrared light throught thin films of varying thickness over the frequency range from about 7000 to 500/cm at temperatures below 200 K. We developed a theory for the transmission of light through a substrate that has thin films on both sides. We used an iterative Kramers-Kronig technique to determine the optical constants which gave the best match between measured transmission spectra and those calculated for a variety of films of different thickness. These optical constants should be useful for calculations of the infrared spectrum of polar stratospheric clouds.
Publication Date: Dec 20, 1994
Document ID:
19950053255
(Acquired Dec 28, 1995)
Accession Number: 95A84854
Subject Category: METEOROLOGY AND CLIMATOLOGY
Document Type: Journal Article
Publication Information: Journal of Geophysical Research (ISSN 0148-0227); 99; D12; p. 25631-25654
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 24p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CLOUD PHYSICS; HYDRATES; ICE; INFRARED SPECTRA; NITRIC ACID; OPTICAL PROPERTIES; OZONE DEPLETION; POLAR REGIONS; SOLID PHASES; STRATOSPHERE; AMORPHOUS MATERIALS; CRYSTAL OPTICS; CRYSTALS; ELECTROMAGNETIC WAVE TRANSMISSION; FILM THICKNESS; INFRARED SPECTROMETERS; KRAMERS-KRONIG FORMULA; REFRACTIVITY
Imprint And Other Notes: Journal of Geophysical Research vol. 99, no. D12 p. 25631-25654 December 20, 1994
Miscellaneous Notes: Research sponsored by NASA's Atmospheric Chemistry Modeling and Analysis Program, and High Speed Research Program and NSF
Availability Source: Other Sources
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