| Autor: |
Usenko, Alexei, Shvarts, V., Mikhin, Nikolai, Rudavskii, Eduard, Tokar, Y., Mikheev, Vladimir |
| Zdroj: |
Journal of Low Temperature Physics; November 1995, Vol. 101 Issue: 3-4 p845-850, 6p |
| Abstrakt: |
The isotopical phase separation in a weak solid mixture of3He in4He is investigated by 250 kHz pulsed NMR under a pressure of 3.7 MPa in the temperature range 100 – 240 mK. The equilibrium concentrations of3He in HCP phase are found to be in a good agreement with classical regular solution theory for phases with different crystal structures. The time constant of decay at steplike cooldown along the separation line are shown to monotonously decrease. The linear dependence of the time on the concentration may point towards an important role of quantum diffusion. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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