Critical properties of acoustic wave absorption in the benzonitrile-isooctane system

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Authors

  • T. HORNOWSKI Institute of Acoustics, A. Mickiewicz University, Poland
  • M. ŁABOWSKI Institute of Acoustics, A. Mickiewicz University, Poland

Abstract

Experimental results for the absorption of ultrasonic waves in critical benzonitrile + isooctane mixtures in the frequency range 5–21 MHz and at temperatures 0.15 ≤ T – Tc ≤ 20 K are reported and confronted with the Shiwa-Kawasaki's mode-coupling theory. The theoretical scaling function was found to describe the experimental results correctly throughout the reduced frequency range ω* < 50. The values of certain thermodynamic parameters necessary for the determination of the reduced amplitude A(ε) were calculated using the linear relation between αc/f2 and f-1.06 predicted by the Bhattacharjee-Ferell dynamic scaling theory.

References

[1] Y. HARADA, Y. SUZUKI and Y. ISHIDA, J. Phys. Soc. Jpn., 48, 703 (1980).

[2] H. TANAKA, Y. WADA and H. NAKAJAMA, Chem. Phys., 75, 37—43 (1983).

[3] C.W. GARLAND and G. SANCHEZ, J. Chem. Phys., 79, 6, 3090—3099 (1983).