Solid solutions Ne–nD2. Diagram of phase equilibrium

Abstract

X-Ray investigations of vacuum condensates of the binary mixtures Ne–nD2 at temperatures from 6 K to the melting point of the solutions are performed. A diagram of phase equilibrium of the liquid and solid mixtures is proposed on the basis of the experimentally obtained and published data on the phase composition and mutual solubility of the components. The isotopic effect in the mutual solubility of the components is determined. A long-lived but metastable hexagonal phase is found, and the conditions for the formation and decomposition of this phase are determined.