NDLI: Infrared transmission equations in a five media system: gas and liquid

Content Provider	Springer Nature Link
Author	Max, Jean Joseph Chapados, Camille
Copyright Year	2009
Abstract	Equations are proposed for transmission cells in the presence of multiple reflections and absorption which generate unwanted fringes. These influence adversely band intensity measurements. The infrared (IR) spectra generated with these equations are compared successfully with experimental spectra obtained with BaF$_{2}$, ZnSe, and Si windows in parallel mount formation having μm range air gaps. Equations are extended for integration of a variable path length such as in wedge shaped cells that are used to mitigate fringe formations but generate other odd problems such as path length determination. These equations allow the evaluation of the transmission obtained from boxcar cells whose parallelism is a little offset. This phenomenon modifies the fringe intensities. The proposed equations were used to calculate the IR spectra of pure liquid D$_{2}$O between BaF$_{2}$ and ZnSe windows with path lengths of around 25 μm and compared with experimental spectra. Since the fit was very good it indicates that the proposed equations give better optical properties of pure liquids than that presently available. This is important for liquid used as standards and in particular water used here as reference.
Starting Page	590
Ending Page	625
Page Count	36
File Format	PDF
ISSN	02599791
Journal	Journal of Mathematical Chemistry
Volume Number	47
Issue Number	2
e-ISSN	15728897
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-09-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Infrared Transmission equations Five media systems Gas Liquid Multiple reflections Fringes Math. Applications in Chemistry Theoretical and Computational Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Chemistry

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