Ultrasonic and Hypersonic Studies of Relaxations in Ethanol-Water Mixtures
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概要
- 論文の詳細を見る
The sound velocity and absorption in ethanol and water mixtures are measured with a new technique utilizing high-resolution Bragg reflection in the frequency range from 150 MHz to 500 MHz. The absorption in the range 20-150 MHz as well as the hypersonic velocity in the range 3-7 GHz are also measured. Relaxation spectra over the range 10 MHz-10 GHz at the temperatures of 15° and 20℃ suggest two relaxations, one at about 100 MHz and the other above 1 GHz. The relaxation strength of the former has a maximum at the ethanol concentration of about 40 wt%(≃20 mole %), whereas the latter at 50 wt%.The two-state model A+B_m⇄AB_m is applied to interpret the concentration dependence of the relaxation strength at 100 MHz.
- 社団法人応用物理学会の論文
- 1975-07-05
著者
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Negishi Katsuo
Institute Of Industrial Science The University Of Tokyo
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Takagi Kenshiro
Institute Of Industrial Science University Of Tokyo
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