Picosecond time scale dynamics of short pulse laser-driven shocks in tin

Journal Article · Fri May 01 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3103602· OSTI ID:21356140

Grigsby, W; Bowes, B T; Dalton, D A; Bernstein, A C; Bless, S; Downer, M C; Taleff, E; Ditmire, T ^[1]; Colvin, J ^[2]

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1. Texas Center for High Intensity Laser Science, Department of Physics, University Of Texas at Austin, 1 University Station, C1510, Austin, Texas 78712 (United States)
2. Chemistry and Materials Science Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

The dynamics of high strain rate shock waves driven by a subnanosecond laser pulse in thin tin slabs have been investigated. These shocks, with pressure up to 1 Mbar, have been diagnosed with an 800 nm wavelength ultrafast laser pulse in a pump-probe configuration, which measured reflectivity and two-dimensional interferometry of the expanding rear surface. Time-resolved rear surface expansion data suggest that we reached pressures necessary to shock melt tin upon compression. Reflectivity measurements, however, show an anomalously high drop in the tin reflectivity for free standing foils, which can be attributed to microparticle formation at the back surface when the laser-driven shock releases.

• OSTI ID: 21356140
• Journal Information: Journal of Applied Physics, Vol. 105, Issue 9; Other Information: DOI: 10.1063/1.3103602; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FOILS
INTERFEROMETRY
LASERS
OPTICAL PUMPING
PULSES
REFLECTIVITY
SHOCK WAVES
STRAIN RATE
TIME RESOLUTION
TIN
TWO-DIMENSIONAL CALCULATIONS
ELEMENTS
METALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PUMPING
RESOLUTION
SURFACE PROPERTIES
TIMING PROPERTIES