Dielectric Constant, Density, Expansion Coefficient, and Entropy of Liquid He3 Under Pressure Below 1K Academic Article uri icon


  • By measuring the resonant frequency of an LC circuit containing a capacitor filled with liquid He3, the dielectric constant of the liquid was measured from 0.14 to 1K at several pressures from 0.2 to 29.5 atmospheres. From these measurements the density, expansion coefficient at constant pressure, and the change in entropy on compression from saturated vapor pressure to higher pressures were determined. p was found to be negative and, hence, (P)T positive for all pressures below a certain temperature which increased monotonically with pressure, confirming behavior found by Brewer and Daunt. A minimum in the melting curve of He3 was found at T=0.320.01K and p=29.10.1 atm. The results are compared with those obtained by other methods. 1961 The American Physical Society.

published proceedings

  • Physical Review

author list (cited authors)

  • Lee, D. M., Fairbank, H. A., & Walker, E. J.

citation count

  • 72

complete list of authors

  • Lee, DM||Fairbank, Henry A||Walker, Edward J

publication date

  • March 1961