Abstract
Depolarized Rayleigh and low frequency Raman scattering data in bulk supercooled water are presented. The measurements, performed from the normal region down to −26.95 °C for the first time, allow a quantitative data analysis and reveal the existence of a fine structure of the central contribution. We have identified a ‘‘fast’’ and ‘‘slow’’ contribution whose intensities show an opposite behavior as a function of temperature. Such a behavior is understood as a decay of local order due to the H bond. The spectral density function, as derived from the depolarized Raman data, shows the presence of acoustical and intermolecular optical contributions characteristic of many structured disordered materials. A critical comparison with molecular dynamics (MD) and neutron scattering results is also presented.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 9:08 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 9, 2024, 11:36 p.m.) |
Indexed | 1 year, 6 months ago (Feb. 10, 2024, 10:02 p.m.) |
Issued | 39 years, 3 months ago (May 1, 1986) |
Published | 39 years, 3 months ago (May 1, 1986) |
Published Print | 39 years, 3 months ago (May 1, 1986) |
@article{Aliotta_1986, title={Role of the H bond and cooperative effects in normal and supercooled water studied by anisotropic low frequency light scattering}, volume={84}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.450007}, DOI={10.1063/1.450007}, number={9}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Aliotta, F. and Vasi, C. and Maisano, G. and Majolino, D. and Mallamace, F. and Migliardo, P.}, year={1986}, month=may, pages={4731–4738} }