Ultrasonic Study of Critical Mixing of n-Heptane and Nitrobenzene
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概要
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The sound attenuation (l -9 MHz) and velocity in the critical mixture, n-heptane-nitrobenzene, have been measured in detail through the critical mixingtemperature at l atm by the pulsed technique which incorporates the pulse-echo-overlap method and signal-averaging. Temperature and frequency dependenceof the critical attenuation per wavelength az(crit.) and dispersion have beenexamined in terms of the mode coupling theory by Fixman and Kawasaki. Theresults support the analogy of sound propagation in the critical fluid states ofgas-liquid and liquid-liquid. Possible behavior of the zero-frequency sound speedc. is also discussed.
- 社団法人日本物理学会の論文
- 1978-07-15
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