中国物理B ›› 2006, Vol. 15 ›› Issue (9): 2030-2035.doi: 10.1088/1009-1963/15/9/023

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Ultrasonic study on organic liquid and binary organic liquid mixtures by using Schaaffs' collision factor theory

董彦武1, 卢义刚2   

  1. (1)Applied Acoustics Institute, Shaanxi Normal University, Xi'an 710062, China; (2)School of Physics, South China University of Technology,Guangzhou 510640, China
  • 收稿日期:2005-08-10 修回日期:2006-05-15 出版日期:2006-09-20 发布日期:2006-09-20

Ultrasonic study on organic liquid and binary organic liquid mixtures by using Schaaffs' collision factor theory

Lu Yi-Gang(卢义刚)a)† and Dong Yan-Wu(董彦武)b)   

  1. a School of Physics, South China University of Technology, Guangzhou 510640, China; b Applied Acoustics Institute, Shaanxi Normal University, Xi'an 710062, China
  • Received:2005-08-10 Revised:2006-05-15 Online:2006-09-20 Published:2006-09-20

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摘要： Based on Schaaff's collision factor theory (CFT) in liquids, the equations for nonlinear ultrasonic parameters in both organic liquid and binary organic liquid mixtures are deduced. The nonlinear ultrasonic parameters, including pressure coefficient, temperature coefficients of ultrasonic velocity, and nonlinear acoustic parameter B/A in both organic liquid and binary organic liquid mixtures, are evaluated for comparison with the measured results and data from other sources. The equations show that the coefficient of ultrasonic velocity and nonlinear acoustic parameter B/A are closely related to molecular interactions. These nonlinear ultrasonic parameters reflect some information of internal structure and outside status of the medium or mixtures. From the exponent of repulsive forces of the molecules, several thermodynamic parameters, pressure and temperature of the medium, the nonlinear ultrasonic parameters and ultrasonic nature of the medium can be evaluated. When evaluating and studying nonlinear acoustic parameter B/A of binary organic liquid mixtures, there is no need to know the nonlinear acoustic parameter B/A of the components. Obviously, the equation reveals the connection between the nonlinear ultrasonic nature and internal structure and outside status of the mixtures more directly and distinctly than traditional mixture law for B/A, e.g. Apfel's and Sehgal's laws for liquid binary mixtures.

关键词: nonlinear acoustic parameter B/A, coefficient of ultrasonic velocity, organic liquid, binary organic liquid mixtures

Abstract: Based on Schaaff's collision factor theory (CFT) in liquids, the equations for nonlinear ultrasonic parameters in both organic liquid and binary organic liquid mixtures are deduced. The nonlinear ultrasonic parameters, including pressure coefficient, temperature coefficients of ultrasonic velocity, and nonlinear acoustic parameter B/A in both organic liquid and binary organic liquid mixtures, are evaluated for comparison with the measured results and data from other sources. The equations show that the coefficient of ultrasonic velocity and nonlinear acoustic parameter B/A are closely related to molecular interactions. These nonlinear ultrasonic parameters reflect some information of internal structure and outside status of the medium or mixtures. From the exponent of repulsive forces of the molecules, several thermodynamic parameters, pressure and temperature of the medium, the nonlinear ultrasonic parameters and ultrasonic nature of the medium can be evaluated. When evaluating and studying nonlinear acoustic parameter B/A of binary organic liquid mixtures, there is no need to know the nonlinear acoustic parameter B/A of the components. Obviously, the equation reveals the connection between the nonlinear ultrasonic nature and internal structure and outside status of the mixtures more directly and distinctly than traditional mixture law for B/A, e.g. Apfel's and Sehgal's laws for liquid binary mixtures.

Key words: nonlinear acoustic parameter B/A, coefficient of ultrasonic velocity, organic liquid, binary organic liquid mixtures

中图分类号:  (Doped-insulator lasers and other solid state lasers)

  • 42.55.Rz
42.60.Pk (Continuous operation) 42.60.Fc (Modulation, tuning, and mode locking) 42.60.Lh (Efficiency, stability, gain, and other operational parameters) 42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption) 42.79.Bh (Lenses, prisms and mirrors)