Measurement of short-range correlations in shock-compressed plastic by short-pulse x-ray scattering.
We have performed short-pulse x-ray scattering measurements on laser-driven shock-compressed plastic samples in the warm dense matter regime, providing instantaneous snapshots of the system evolution. Time-resolved and angularly resolved scattered spectra sensitive to the correlation effects in the plasma show the appearance of short-range order within a few interionic separations. Comparison with radiation-hydrodynamic simulations indicates that the shocked plastic is compressed with a temperature of a few electron volts. These results are important for the understanding of the thermodynamic behavior of strongly correlated matter for conditions relevant to both laboratory astrophysics and inertial confinement fusion research.
Barbrel
B
B
Laboratoire pour l'Utilisation de Lasers Intenses, UMR7605, CNRS CEA, Université Paris VI Ecole Polytechnique, 91128 Palaiseau Cedex, France.
Koenig
M
M
Benuzzi-Mounaix
A
A
Brambrink
E
E
Brown
C R D
CR
Gericke
D O
DO
Nagler
B
B
Rabec le Gloahec
M
M
Riley
D
D
Spindloe
C
C
Vinko
S M
SM
Vorberger
J
J
Wark
J
J
Wünsch
K
K
Gregori
G
G