Helium–Hydrogen Liquid–Vapor Equilibrium to 100 atm

Abstract

Liquid–vapor phase compositions are given for 11 isotherms of the system normal‐hydrogen–helium over the range 15.5° to 29.8°K at pressures to 1500 lb/in.2 In this range, the mixture critical curve is located, the freezing points are shown, and the locus is determined for the barotropic phenomenon (gravitational phase inversion). Two isotherms are duplicated with the substitution of parahydrogen.