Anomalous propagation and scattering of sound in 2-propanol water solution near its singular point
| Autor: | O.I. Bilous, A.V. Chalyi, Leonid A. Bulavin |
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| Rok vydání: | 2017 |
| Předmět: |
Binary number
02 engineering and technology Anomalous behavior Singular point of a curve 010402 general chemistry 01 natural sciences Intersection (Euclidean geometry) Propanol chemistry.chemical_compound Optics Materials Chemistry Physical and Theoretical Chemistry Spectroscopy Scattering Chemistry business.industry Anomalous propagation 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Attenuation coefficient Atomic physics 0210 nano-technology business |
| Zdroj: | Journal of Molecular Liquids. 235:24-30 |
| ISSN: | 0167-7322 |
| Popis: | In this study we describe the anomalous physical properties of aqueous alcohol solutions near its singular (particular) points. A special attention is paid to conducting experiments on the temperature ( T ), concentration ( x ) and frequency ( f ) dependence of the sound velocity and effective absorption coefficient in a binary mixture 2-propanol – water in wide intervals of T = (293 ÷ 343) K, x = (0 ÷ 1) of 2-propanol molar fractions, and f = (10 ÷ 2500) MHz. A singular (particular) point of 2-propanol-water solution with coordinate x s = 0.03 ± 0.01, T s = (313.0 ± 2.0) K is found as the intersection points of the sound velocity and absorption coefficient dependence on concentration and temperature at different frequencies. An anomalous behavior of aqueous alcohol solutions near the singular (particular) points enables us to support the hypothesis of the “fluctuating clusters mechanism”. This finding can directly explain two important effects as follows: an anomalous growth of (a) the light molecular scattering and (b) the sound molecular scattering. |
| Databáze: | OpenAIRE |
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