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Shock compression of liquid helium to 56 GPa (560 kbar)Shock-wave data are presented for liquid helium which has been compressed to densities up to five times greater than the normal liquid. The helium was heated to temperatures up to 21,000 K, while the maximum pressure attained was 56 GPa. The properties of helium and hydrogen are important for modeling the giant planets Saturn and Jupiter where these elements are the major constituents. Conditions on Saturn are of particular interest because studies have suggested that this planet has an internal energy source which is associated with unmixing and gravitational separation of the hydrogen-helium fluid at pressures below 1 TPa. The existence of this phase transition depends very sensitively on the hydrogen and helium equation of state. In the experiments, strong shock waves were generated by the impact of planar projectiles into cryogenic specimen holders.
Document ID
19840066147
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nellis, W. J.
(Los Alamos Scientific Lab. NM, United States)
Holmes, N. C.
(Los Alamos Scientific Lab. NM, United States)
Mitchell, A. C.
(Los Alamos Scientific Lab. NM, United States)
Governo, G. K.
(Los Alamos Scientific Lab. NM, United States)
Ross, M.
(Los Alamos Scientific Lab. NM, United States)
Young, D. A.
(California, University Lawrence Livermore National Laboratory, Livermore, CA, United States)
Trainor, R. J.
(Los Alamos National Laboratory, Los Alamos, NM; California, University Lawrence Livermore National Laboratory, Livermore, CA, United States)
Date Acquired
August 12, 2013
Publication Date
September 24, 1984
Publication Information
Publication: Physical Review Letters
Volume: 53
ISSN: 0031-9007
Subject Category
Thermodynamics And Statistical Physics
Accession Number
84A48934
Funding Number(s)
CONTRACT_GRANT: W-7405-ENG-48
Distribution Limits
Public
Copyright
Other

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