Raman scattering by pure water and seawater

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Title: Raman scattering by pure water and seawater
Author: Bartlett, Jasmine; Voss, Kenneth; Sathyendranath, Shubha; Vodacek, Anthony
Abstract: Measurements of the magnitude and spectral distribution of the Raman-scattering coefficients of pure water ( b rw ) and seawater ( b rs ) are presented. Two independent measurements of the spectral distribution of the Raman-scattering coefficient of pure water were made for incident wavelengths ranging from 250 to 500 nm. These measurements revealed a strong dependence of b rw on wavelength that could be represented by a ( ) 5.3 0.3 relationship, where is the incident wavelength, or a 4.6 0.3 relationship, where is the Raman-scattered wavelength, when normalized to units of photons. The corresponding relationships for normalization to energy are ( ) 5.5 0.4 and 4.8 0.3 , respectively. These relationships are found to be consistent with resonance Raman theory for an absorption wavelength of 130 nm. The absolute value of b rw for the 3400-cm 1 line was found to be (2.7 0.2) 10 4 m 1 for an incident wavelength of 488 nm, which is consistent with a number of earlier reports. The difference between the magnitudes of the Raman-scattering coefficients for pure water and seawater was statistically insignificant (Refer to PDF file for exact formulas).
Description: RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/4239
Publishers URL: http://dx.doi.org/10.1364/AO.37.003324
Date: 1998-05-20

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