ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have measured the solubility of 4 He in liquid 3 He down to about 40 mK and at pressures from zero up to ∼ 24 atm. The solubility was obtained from the thickness of the superfluid film in contact with unsaturated solutions of 4 He in 3 He as a function of temperature. By fitting the solubility data to Fermi liquid theory, we obtained the parameters m 4 * and Δ as a function of pressure. Here, m 4 * is the effective mass of 4 He in liquid 3 He and Δ the difference in binding energy between 4 He in pure 4 He and 4 He in liquid 3He. This difference has a minimum near 10 atm. The average of the results for m 4 * , at different pressures, is (1.3 ± 0.2)m 4. This agrees with the many body calculations of de Saavedra et al., and with the Stokes hydrodynamic mass using the partial volume of 4 He in 3 He, v 4 * . The partial volume was obtained by taking the derivative of Δ with respect to pressure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022544015141
