Temperature measurements of shock compressed liquid deuterium up to 230 GPa.
Pyrometric measurements of single-shock-compressed liquid deuterium reveal that shock front temperatures T increase from 0.47 to 4.4 eV as the pressure P increases from 31 to 230 GPa. Where deuterium becomes both conducting and highly compressible, 30< or =P< or =50 GPa, T is lower than most models predict and T<<T(Fermi), proving that deuterium is a degenerate Fermi-liquid metal. At P>50 Gpa, where the optical reflectivity is saturated, there is an increase in the rate that T increases with P.
Collins
G W
GW
Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
Celliers
P M
PM
Da Silva
L B
LB
Cauble
R
R
Gold
D M
DM
Foord
M E
ME
Holmes
N C
NC
Hammel
B A
BA
Wallace
R J
RJ
Ng
A
A