Phase equilibria in fluid mixtures at high pressures: The He-CH4 systemAn experimental study of phase equilibria in the He-CH4 system was carried out over the temperature range 95 to 290 K and at pressures to 10,000 atm. The experimental results consist of equilibrium phase composition for twenty-eight isotherms in the region of coexistence of two fluid phases, together with the pressure-temperature trace of the three-phase boundary at which a CH4-rich solid phase is in equilibrium with the two fluid phases. The system exhibits a fluid-fluid phase separation which persists to temperatures and pressures beyond the range of this experiment. These results, together with those recently obtained for other binary systems, provide information about the form of phase diagrams for binary gas mixtures in the region of pressure induced phase transitions at high pressures. These findings are relevant to problems of deep atmosphere and interior structures in the outer planets.
Document ID
19740003521
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Streett, W. B. (Military Academy West Point, NY, United States)
Erickson, A. L. (Military Academy West Point, NY, United States)
Hill, J. L. E. (Military Academy West Point, NY, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: Univ. Space Res. Assoc. High Pressure Phys. and Planetary Interiors