The observed properties of liquid helium at the saturated vapor pressure

The equilibrium and transport properties of liquid He-4 are deduced from ex perimental observations at the saturated vapor pressure. In each case, the bibliography lists all known measurements. Quantities reported hen include density, thermal expansion coefficient, dielectric constant, superfluid and normal fluid densities, first, second, third, and fourth sound velocities, specific heat, enthalpy, entropy, surface tension, ion mobilities. mutual friction, viscosity and kinematic viscosity, dispersion curve, structure fa ctor, thermal conductivity, latent heat, saturated vapor pressure, thermal diffusivity and Prandtl number of helium I , and displacement length and Vo rtex core parameter in helium II. (C) 1998 American Institute of Physics an d American Chemical Society.. [S0047-2689(98)00206-2].