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JOURNALS // Optics and Spectroscopy // Archive

Optics and Spectroscopy, 2020 Volume 128, Issue 1, Pages 76–79 (Mi os498)

This article is cited in 3 papers

Physical optics

Nonequilibrium fluctuations of light scattering intensity in the neighborhood of the phase transition temperature

A. N. Alekseev, L. Yu. Vergun, Yu. F. Zabashta, V. I. Kovalchuk, M. M. Lazarenko, E. G. Rudnikov, L. A. Bulavin

National Taras Shevchenko University of Kyiv

Abstract: Light scattering in a 3% aqueous solution of hydroxypropyl methylcellulose (metolose) is studied under nonequilibrium conditions within a temperature range of 303–353 K, i.e., in the neighborhood of the phase transition temperature (336 K). It is established that the light scattering intensity undergoes considerable fluctuations in this temperature interval. It is shown that they are caused by quasi-periodic motions (density fluctuations) appearing in the strongly nonequilibrium state of the solution.

Keywords: metolose, phase transition, light scattering, nonequilibrium fluctuations.

Received: 15.06.2019
Revised: 21.09.2019
Accepted: 26.06.2019

DOI: 10.21883/OS.2020.01.48841.216-19


 English version:
Optics and Spectroscopy, 2020, 128:1, 74–77

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© Steklov Math. Inst. of RAS, 2024