X-ray scattering measurements of radiative heating and cooling dynamics.
Spectrally and time-resolved x-ray scattering is used to extract the temperature and charge state evolution in a near solid density carbon foam driven by a supersonic soft x-ray heat wave. The measurements show a rapid heating of the foam material (approximately 200 eV/ns) followed by a similarly fast decline in the electron temperature as the foam cools. The results are compared to an analytic power balance model and to results from radiation-hydrodynamics simulations. Finally, the combination of charge state and temperature extracted from this known density isochorically heated plasma is used to distinguish between dense plasma ionization balance models.
Gregori
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G
Lawrence Livermore National Laboratory, University of California, P.O. Box 808, California 94551, USA.
Glenzer
S H
SH
Fournier
K B
KB
Campbell
K M
KM
Dewald
E L
EL
Jones
O S
OS
Hammer
J H
JH
Hansen
S B
SB
Wallace
R J
RJ
Landen
O L
OL