Sound absorption in water-methanol mixtures

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概要

• 論文の詳細を見る

• Experimental results on the sound absorption of methanol-water mixtures are obtained by the pulse method in the range of 5 to about 700MHz and for a temperature of 5℃. Since a methanol molecule has a small hydrophobic radical, these systems are regarded as one of the simplest nonelectrolyte aqueous solutions and then the attenuation vs. frequency plot shows nearly a single relaxation process. The frequency dependence of sound absorption agrees well with the predictions of a concentration fluctuations theory by Endo who assumes two relaxation times. The reason for its small sound absorption in these systems was elucidated by the relaxation parameters which relates to a cut-off wave number for diffusion processes. A somewhat single relaxation behavior in the attenuation vs. frequency plots may be interpreted by a small value of cut-off wave number.

• 社団法人日本音響学会の論文

著者

• Endo Harumi

  Department Of Applied Physics National Defense Academy

• Atkinson Gordon

  Department Of Chemistry And Biochemistry

• Saijou Kenji

  Department of Applied Physics,National Defense Academy

• Saijou Kenji

  Department Of Applied Physics National Defense Academy

関連論文

• Isochoric Heat Capacities of Ethanol-water Mixtures at Temperatures from 280K to 420K and Pressures up to 30MPa (特集 ACRA-2002講演論文選集(1))
• Sound absorption in water-methanol mixtures

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