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Picosecond time scale dynamics of short pulse laser-driven shocks in tin
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10.1063/1.3103602
/content/aip/journal/jap/105/9/10.1063/1.3103602
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/9/10.1063/1.3103602

Figures

Image of FIG. 1.
FIG. 1.

Optical schematic of the shocked tin experiment showing the interferometric and reflectivity ultrafast probe beams.

Image of FIG. 2.
FIG. 2.

Illustration of the two thin slab configurations used in these studies.

Image of FIG. 3.
FIG. 3.

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.

Image of FIG. 4.
FIG. 4.

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.

Image of FIG. 5.
FIG. 5.

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.

Image of FIG. 6.
FIG. 6.

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.

Image of FIG. 7.
FIG. 7.

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.

Image of FIG. 8.
FIG. 8.

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.

Image of FIG. 9.
FIG. 9.

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).

Image of FIG. 10.
FIG. 10.

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.

Image of FIG. 11.
FIG. 11.

Tin Hugoniot measurement of Sn on LiF windows. These data are compared to the Hugoniot of the Los Alamos SESAME table (Ref. 43).

Image of FIG. 12.
FIG. 12.

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.

Image of FIG. 13.
FIG. 13.

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 .

Image of FIG. 14.
FIG. 14.

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 .

Tables

Generic image for table
Table I.

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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/content/aip/journal/jap/105/9/10.1063/1.3103602
2009-05-11
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Picosecond time scale dynamics of short pulse laser-driven shocks in tin
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/9/10.1063/1.3103602
10.1063/1.3103602
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