Measurements of thermal diffusion in H2–He mixtures by using ultrasonics
An ultrasonic interferometer has been used to measure the change of the concentration produced by thermal diffusion in H2–He mixtures. With this method the separation degree has been measured as a function of the concentration and the temperature. From these measurements we calculated the thermal diffusion factor α, thus we obtained α = 0.149. We measured the change of the concentration as a function of time in H2–N2 mixtures by means of the velocity. We obtained a good agreement with Clark Jones and Furry's theory (Rev. mod. Phys. 18 , 151).
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Document Type: Research Article
Publication date: January 1, 1955
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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