Schematic showing the halfraum used in these experiments. The stepped foil is shown not to scale.
Comparison of the measured (solid line), and simulated (dashed) as a function of time together with the proposed drives of Callahan et al. (Ref. 17) (dotted-dashed) and Wilson et al. (Ref. 7) (dotted).
(a) Raw VISAR image recorded from stepped pure Be foil and (b) corresponding velocity histories measured from the three steps. (19.4, 36.1, and 50.6 ).
Measured (dotted) and predicted (solid) foil surface velocities for a range of initial step thicknesses. From left: , , , , and .
Predicted rear-surface temperatures corresponding to the samples shown in Fig. 4.
Simulated temperature profiles and melt lines as a function of distance into the Be sample at 200 ps increments during the laser pulse. (a) During the first ns of the pulse, melting occurs due to radiation, (b) between 22 and melting starts to occur due to shock heating.
Schematic of the stepped sample used to measure energy deposition in buried Cu-doped layers.
Measured and simulated surface motion from the thick Be samples and the 0.35% Cu-doped steps. The vertical lines denote shock breakout. From left to right the curves are pure Be ( drive), BeCu ( drive), BeCu ( drive), and BeCu ( drive). The drive shots were with an increased -band (six additional Cone 3 beams were used with each beam having some overlap with the Cone 2 spots).
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