11. Lambda and stratification temperatures of 3He-4 He mixtures from precision first sound measurements
β Scribed by S.G. Sydoriak; T.R. Roberts
- Publisher
- Elsevier Science
- Year
- 1958
- Weight
- 71 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0031-8914
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π SIMILAR VOLUMES
The kinetic theory of first sound in a quantum liquid is presented. The results for velocity and sound attenuation are obtained and found to be valid over a wide range of frequencies, including hydrodynamic, kinetic, and intermediate regimes, and throughout the whole temperature range in which a qua
We present experimental results on the attenuation and velocity of first sound in a saturated (X = 0.064) JHe-4He mixture. The measurements were performed at very low temperature (3.5 < T< 20 mK) with relatively low frequencies (around 1 MHz) at saturated vapor pressure, using a CW technique. Though
On the basis of the vapour pressure of 3He--4He mixtures, partly measured directly by S o m m e r s and by W a n s i n k et al. and partly calculated from the osmotic pressure data obtained by W a n s i n k and Taconis, the change of the Gibbs-function of the mixture with concentration has been calc