Depolarized Rayleigh-wing scattering in water and aqueous electrolytic solutions

Publisher Website
Google Scholar
Abstract
Depolarized Rayleigh‐wing scattering has been studied in the region 20–110 cm−1 in pure H2O and aqueous KI and MgSO4 solutions, for temperatures between 0 and 90°C and concentrations in the 0–3M range (0–1M for MgSO4). The integrated intensity increases faster with temperature in pure H2O than would be expected from the collision‐induced polarizability theory of Bucaro and Litovitz. We ascribe this excess to temperature‐induced structural changes (the breaking of hydrogen bonds). The integrated intensity in KI solutions increases with concentration and in MgSO4 solutions decreases slightly with concentration. This is also discussed in terms of structural enhancement or breakdown.