Planetary fluids He and NH/sub 3/ at high shock pressures and temperatures
Liquid He at 4.3 K and 1 atm was shocked to 16 GPa (160 kbar) and 12,000 K and double-shocked to 56 GPa and 21,000 K. Liquid perturbation theory was used to determine an effective interatomic potential from which the equation of state of He can be obtained over a wide range of densities and temperatures in the envelopes of the outer planets. A new fast optical pyrometer and a cryogenic specimen holder for liquid NH/sub 3/ were developed to measure shock temperatures of 4400 and 3600 K at pressures of 59 and 48 GPa. These conditions correspond to those in the ice layers in Uranus and Neptune. The shock temperature data are in reasonable agreement with an equation of state by Ree based on an intermolecular potential derived from NH/sub 3/ Hugoniot data.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5822666
- Report Number(s):
- UCRL-92575; CONF-8503115-2; ON: DE85011851
- Resource Relation:
- Conference: 16. lunar and planetary science conference, Houston, TX, USA, 11 Mar 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
EQUATIONS OF STATE
HELIUM
INTERATOMIC FORCES
SHOCK WAVES
SIMULATION
ULTRALOW TEMPERATURE
VERY HIGH PRESSURE
VERY HIGH TEMPERATURE
ELEMENTS
EQUATIONS
FLUIDS
GASES
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
RARE GASES
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