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Temperature dependence of the Landau-Placzek ratio in liquid water. / Zykova, V. A.; Karpegina, Y. A.; Malinovsky, V. K. et al.

In: Physical Review E, Vol. 96, No. 4, 042608, 23.10.2017.

Research output: Contribution to journal › Article › peer-review

Harvard

Zykova, VA, Karpegina, YA, Malinovsky, VK & Surovtsev, NV 2017, 'Temperature dependence of the Landau-Placzek ratio in liquid water', Physical Review E, vol. 96, no. 4, 042608. https://doi.org/10.1103/PhysRevE.96.042608

APA

Zykova, V. A., Karpegina, Y. A., Malinovsky, V. K., & Surovtsev, N. V. (2017). Temperature dependence of the Landau-Placzek ratio in liquid water. Physical Review E, 96(4), [042608]. https://doi.org/10.1103/PhysRevE.96.042608

Vancouver

Zykova VA, Karpegina YA, Malinovsky VK, Surovtsev NV. Temperature dependence of the Landau-Placzek ratio in liquid water. Physical Review E. 2017 Oct 23;96(4):042608. doi: 10.1103/PhysRevE.96.042608

Author

Zykova, V. A. ; Karpegina, Y. A. ; Malinovsky, V. K. et al. / Temperature dependence of the Landau-Placzek ratio in liquid water. In: Physical Review E. 2017 ; Vol. 96, No. 4.

BibTeX

@article{10b6e887fb674d32a0ce26be1ffff27d,
title = "Temperature dependence of the Landau-Placzek ratio in liquid water",
abstract = "Rayleigh-Brillouin light scattering is studied in liquid water over the range from 249 to 365 K. Experiments are carried out with a high spectral resolution (0.1 GHz), eliminating any contribution of the structural relaxation to the elastic line. The Landau-Placzek ratio is found as the ratio of the Rayleigh and Brillouin intensities. In the whole temperature range, the Landau-Placzek ratio is found to be in good agreement with a prediction of the theory with a pair of independent thermodynamic variables, pressure and entropy. This description is usually used for single-component homogeneous liquids. An excess of the Landau-Placzek ratio above the prediction is expected for inhomogeneous liquids and is observed, for example, in glass-forming liquids below a certain temperature. In contrast to glass-forming liquids, no excess of elastically scattered light increasing at low temperatures is observed for the Landau-Placzek ratio of water. This suggests that the Landau-Placzek ratio of liquid water can be described by a homogeneous structure, and the idea of the water structure consisting of two structural motifs may not be necessary to explain the experimental ratio.",
keywords = "SUPERCOOLED WATER, THERMODYNAMIC BEHAVIOR, BRILLOUIN-SCATTERING, ANOMALOUS PROPERTIES, MODEL, COMPRESSIBILITY, EXPANSIVITY, DENSITY, ORIGIN, INDEX",
author = "Zykova, {V. A.} and Karpegina, {Y. A.} and Malinovsky, {V. K.} and Surovtsev, {N. V.}",
year = "2017",
month = oct,
day = "23",
doi = "10.1103/PhysRevE.96.042608",
language = "English",
volume = "96",
journal = "Physical Review E",
issn = "2470-0045",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Temperature dependence of the Landau-Placzek ratio in liquid water

AU - Zykova, V. A.

AU - Karpegina, Y. A.

AU - Malinovsky, V. K.

AU - Surovtsev, N. V.

PY - 2017/10/23

Y1 - 2017/10/23

N2 - Rayleigh-Brillouin light scattering is studied in liquid water over the range from 249 to 365 K. Experiments are carried out with a high spectral resolution (0.1 GHz), eliminating any contribution of the structural relaxation to the elastic line. The Landau-Placzek ratio is found as the ratio of the Rayleigh and Brillouin intensities. In the whole temperature range, the Landau-Placzek ratio is found to be in good agreement with a prediction of the theory with a pair of independent thermodynamic variables, pressure and entropy. This description is usually used for single-component homogeneous liquids. An excess of the Landau-Placzek ratio above the prediction is expected for inhomogeneous liquids and is observed, for example, in glass-forming liquids below a certain temperature. In contrast to glass-forming liquids, no excess of elastically scattered light increasing at low temperatures is observed for the Landau-Placzek ratio of water. This suggests that the Landau-Placzek ratio of liquid water can be described by a homogeneous structure, and the idea of the water structure consisting of two structural motifs may not be necessary to explain the experimental ratio.

AB - Rayleigh-Brillouin light scattering is studied in liquid water over the range from 249 to 365 K. Experiments are carried out with a high spectral resolution (0.1 GHz), eliminating any contribution of the structural relaxation to the elastic line. The Landau-Placzek ratio is found as the ratio of the Rayleigh and Brillouin intensities. In the whole temperature range, the Landau-Placzek ratio is found to be in good agreement with a prediction of the theory with a pair of independent thermodynamic variables, pressure and entropy. This description is usually used for single-component homogeneous liquids. An excess of the Landau-Placzek ratio above the prediction is expected for inhomogeneous liquids and is observed, for example, in glass-forming liquids below a certain temperature. In contrast to glass-forming liquids, no excess of elastically scattered light increasing at low temperatures is observed for the Landau-Placzek ratio of water. This suggests that the Landau-Placzek ratio of liquid water can be described by a homogeneous structure, and the idea of the water structure consisting of two structural motifs may not be necessary to explain the experimental ratio.

KW - SUPERCOOLED WATER

KW - THERMODYNAMIC BEHAVIOR

KW - BRILLOUIN-SCATTERING

KW - ANOMALOUS PROPERTIES

KW - MODEL

KW - COMPRESSIBILITY

KW - EXPANSIVITY

KW - DENSITY

KW - ORIGIN

KW - INDEX

UR - http://www.scopus.com/inward/record.url?scp=85032030476&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.96.042608

DO - 10.1103/PhysRevE.96.042608

M3 - Article

C2 - 29347548

AN - SCOPUS:85032030476

VL - 96

JO - Physical Review E

JF - Physical Review E

SN - 2470-0045

IS - 4

M1 - 042608

ER -

ID: 9875274