Effect of the Gravitational Field on the Superfluid Transition in
- 5 July 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 171 (1) , 275-282
- https://doi.org/10.1103/physrev.171.275
Abstract
It is shown experimentally that in a liquid helium sample of finite height, He II and He I coexist in thermodynamic equilibrium over a finite temperature range. This is contrary to a recent theoretical prediction. Observations made by noting the position of the boundary between the phases of high and low thermal conductivity as a function of temperature are quantitatively confirmed by high-resolution heat-capacity measurements near the transition region. The rate of movement with temperature of the interface between the two phases yields a slope for the transition line of 113.9±4.6 atm/°K at saturated vapor pressure, in quantitative agreement with recent direct measurements.Keywords
This publication has 7 references indexed in Scilit:
- Order of theII-I Transition under RotationPhysical Review B, 1967
- Molar Volume, Coefficient of Thermal Expansion, and Related Properties of Liquidunder PressurePhysical Review B, 1967
- Lambda Curve of LiquidPhysical Review B, 1967
- Superfluid Density and Scaling Laws for Liquid Helium nearPhysical Review Letters, 1966
- Temperature Dependence of the Superfluid Density in He II NearPhysical Review Letters, 1966
- The molar volume and expansion coefficient of liquid He4Annals of Physics, 1964
- The 1958 He4 scale of temperatures. Part 1. IntroductionJournal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1960