Document Detail

Water density and polarizability deduced from the refractive index determined by interferometric measurements up to 250 MPa.
MedLine Citation:
PMID:  22462850     Owner:  NLM     Status:  In-Data-Review    
The refractive index of water is precisely determined in the visible light range as a function of the pressure until 250 MPa by means of a new measurement device that uses a special pipe tee included in an interferometer set. This technique allows revisiting the Bradley-Tait and Sellmeier equations to make them dependent on the wavelength and the pressure, respectively. The Bradley-Tait equation for the pressure dependence of the water refractive index is completed by a wavelength-dependent factor. Also, in the considered pressure and wavelength ranges, it is shown that the Sellmeier coefficients can be straightforwardly linked to the pressure, allowing the determination of the refractive index of water for either any wavelength or pressure. A new simple model allows the determination of the density of water as a function of the measured refractive index. Finally, the polarizability of water as function of pressure and wavelength is calculated by means of the Lorentz-Lorenz equation.
L Weiss; A Tazibt; A Tidu; M Aillerie
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  136     ISSN:  1089-7690     ISO Abbreviation:  J Chem Phys     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-04-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  124201     Citation Subset:  IM    
Centre de Recherche, d'Innovation et de Transfert Technologique en Jet Fluide, 2 Avenue de la Grande Terre 55000 Bar-le-Duc, France.
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