Optical schematic of the shocked tin experiment showing the interferometric and reflectivity ultrafast probe beams.
Illustration of the two thin slab configurations used in these studies.
SEM image of the cross section of a typical Sn/LiF target. The bottom layer in the image is the deposited Sn layer and the top section is the LiF substrate.
HYADES simulation of a Sn slab coupled to a LiF window when the tin is driven by a 600 ps pulse at intensity of . The two regions of the target are shown matched to the corresponding regions in the target.
2D interferogram of the back surface of a shocked Sn layer deposited on LiF when driven by an intensity of (a shock pressure of ). This image was acquired roughly 1 ns after the initial shock breakout.
Comparison of the deconvolved expansion of the shock breakout after 1 ns from two Sn slabs with the corresponding focal spot profiles. (Top) Expansion from tightly focused laser beam (bottom) Breakout from spot with focal spot diameter.
Free surface expansion as a function of probe laser delay from shocks driven in free standing Sn compared to similar measurement in Al. The peak intensity of the drive laser was varied around . Linear fits to the data are shown above each set.
Plot showing peak interferometric expansion data from the interface of Sn/LiF targets. The various peak laser intensities are plotted in different colors and least-squares curve fits to selected ranges of data are shown in gray. The particle velocities derived from the fits are listed next to each data set.
HYADES simulations (curves) fit to four of the five Sn/LiF interface expansion data (symbols). The numbers printed next to the linear fits to the data (solid thin lines) are the slopes of the lines (i.e., interface velocities).
Tin Hugoniot measured in free standing Sn foils by deriving shock velocity with three different slab thicknesses. These data are compared to the data of previously published Russian gas gun measurements from Ref. 42.
Tin Hugoniot measurement of Sn on LiF windows. These data are compared to the Hugoniot of the Los Alamos SESAME table (Ref. 43).
2D reflectivity measurement of free standing Sn foils shocked to a pressure of . The bottom image was acquired long after the shock broke out (46 ns) and illustrates the large drop in reflectivity that occurs from these free standing foils following shock breakout.
Target expansion (top) and reflectivity (bottom) as a function of probe delay near the center of shocks emerging from free standing foils irradiated at intensity of .
Target expansion (top) and reflectivity (bottom) as a function of probe delay near the center of shocks emerging from Sn/LiF targets irradiated at an intensity of .
Summary of the experimental conditions derived from various focal intensities on thick Sn targets. This compares the shock pressure derived from the measured particle velocity with published values of the Sn Hugoniot with the best fits of the release data with a HYADES simulation. The intensity required in the simulation to match the data is shown along with the resulting simulated shock pressure.
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