Negative Dispersion of High-Frequency Sound Velocity in Aqueous Solutions of Non-Electrolyte in a Vicinity of the Singular Point Concentration

  • L. M. Sabirov Physics Department, Samarkand State University
  • D. I. Semenov Physics Department, Samarkand State University
  • Kh. S. Khaydarov Physics Department, Samarkand State University
Keywords: sound velocity, dispersion, Rayleigh scattering, water solution, 4-methylpyridine

Abstract

A new method of determination of the hypersound velocity dispersion is proposed. It is based on the direct measurement of the frequency shift of Brillouin components in the light scattering spectra registered at different angles. The concentration dependence of the hypersound velocity dispersion is studied in 4-methylpyridine-water solutions. Negative dispersion is experimentally observed in the region of the singular point concentration.

References

I.L. Fabelinskii, Molecular Scattering of Light (Plenum Press, New York, 1968).

http://dx.doi.org/10.1007/978-1-4684-1740-1

K.V. Kovalenko, S.V. Krivokhizha, I.A. Chaban, and L.L. Chaikov, J. Exp. Theor. Phys. 106, 280 (2008).

http://dx.doi.org/10.1134/S1063776108020076

S.V. Krivokhizha, I.L. Fabelinskii, L.L. Chaikov, and A.A. Shubin, J. Exp. Theor. Phys. Lett. 64, 177 (1996).

http://dx.doi.org/10.1134/1.567163

V.V. Vladimirskii, Zh. Eksp. Teor. Fiz. 9, 1226 (1939).

V.L. Ginzburg, Dokl. Akad. Nauk SSSR 36, 9 (1942).

L.A. Bulavin, V.Ya. Gotsulskiy, and V.E. Chechko, Ukr. J. Phys. 59, 689 (2014).

http://dx.doi.org/10.15407/ujpe59.07.0689

V.Ya. Antonchenko, A.S. Davydov, and V.V. Il'in, Fundamentals of Water Physics (Naukova Dumka, Kiev, 1991) (in Russian).

M.N. Rodnikova and N.A. Chumaevskii, J. Struct. Chem. 47 (Suppl.), S154 (2006).

http://dx.doi.org/10.1007/s10947-006-0389-2

L.A. Bulavin, N.P. Malomuzh, and K.S. Shakun, Ukr. J. Phys. 50, 653 (2005).

L.A. Bulavin, A.I. Fisenko, and N.P. Malomuzh, Chem. Phys. Lett. 453, 183 (2008).

http://dx.doi.org/10.1016/j.cplett.2008.01.028

D.I. Semenov, Phys. Wave Phenom. 18, 155 (2010).

http://dx.doi.org/10.3103/S1541308X10030015

Ultrasound. Small Encyclopedia (Sov. Entsikl., Moscow, 1968) (in Russian).

Published
2019-01-15
How to Cite
Sabirov, L., Semenov, D., & Khaydarov, K. (2019). Negative Dispersion of High-Frequency Sound Velocity in Aqueous Solutions of Non-Electrolyte in a Vicinity of the Singular Point Concentration. Ukrainian Journal of Physics, 60(9), 872. https://doi.org/10.15407/ujpe60.09.0872
Section
Soft matter