On temperature dependence of the valence band in the Raman spectrum of liquid water

✍ Scribed by A. V. Kargovsky

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 288 KB
• Volume: 3
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200610063

✦ Synopsis

We propose the model of liquid water as an ideal
mixture of small water associates in dynamical equilibrium state
for description of the temperature dependence of the valence band
shape in the Raman spectrum. The Placzek's theory of vibrational
Raman scattering is used for the spectrum simulation. The
presented model gives valid results, which are in qualitative
agreement with experimental data in the temperature range
-20...80°C. We show that clusters consisting of three
and four water molecules dominate in the given temperature range,
but monomer and dimer concentrations are relatively small at room
temperature. Different polarization types of Raman spectra are
discussed.