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Title: Absolute Hugoniot measurements for CH foams in the 2–9 Mbar range

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.5020422 · OSTI ID:2567671

Absolute Hugoniot measurements for empty plastic foams at ∼10% of solid polystyrene density and supporting rad-hydro simulation results are reported. Planar foam slabs, ∼400 μm thick and ∼500 μm wide, some of which were covered with a 10 μm solid plastic ablator, were directly driven by 4 ns long Nike krypton-fluoride 248 nm wavelength laser pulses that produced strong shock waves in the foam. The shock and mass velocities in our experiments were up to 104 km/s and 84 km/s, respectively, and the shock pressures up to ∼9 Mbar. The motion of the shock and ablation fronts was recorded using side-on monochromatic x-ray imaging radiography. The steadiness of the observed shock and ablation fronts within ∼1% has been verified. The Hugoniot data inferred from our velocity measurements agree with the predictions of the SESAME and CALEOS equation-of-state models near the highest pressure ∼9 Mbar and density compression ratio ∼5. In the lower pressure range 2–5 Mbar, a lower shock density compression is observed than that predicted by the models. Possible causes for this discrepancy are discussed.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
2567671
Report Number(s):
SAND--2017-13815J; 032705
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 25; ISSN 1070-664X
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English

References (63)

Shock propagation in regular wetted arrays of fibers journal December 2012
Flux-corrected transport. I. SHASTA, a fluid transport algorithm that works journal January 1973
Probing matter at Gbar pressures at the NIF journal March 2014
Uncertainties in radiation flow experiments journal March 2016
Characterization of supersonic radiation diffusion waves journal July 2015
The evolution of high-energy-density physics: From nuclear testing to the superlasers journal December 1997
Studies Performed in Russia into the Compressibility of Metals in Strong Shock Waves journal January 2004
Dynamic compression of dense oxide (Gd3Ga5O12) from 0.4 to 2.6 TPa: Universal Hugoniot of fluid metals journal May 2016
Equation‐of‐state measurements of low‐density materials journal August 1991
Reflected shock experiments on the equation-of-state properties of liquid deuterium at 100–600 GPa (1–6 Mbar) journal May 2001
Growth of pellet imperfections and laser imprint in direct drive inertial confinement fusion targets journal May 2001
Direct observation of mass oscillations due to ablative Richtmyer–Meshkov instability and feedout in planar plastic targets journal May 2002
Laser imprint reduction with a short shaping laser pulse incident upon a foam-plastic target journal December 2002
Laser imprint reduction with a shaping pulse, oscillatory Richtmyer–Meshkov to Rayleigh–Taylor transition and other coherent effects in plastic-foam targets journal May 2003
Improved performance of direct-drive inertial confinement fusion target designs with adiabat shaping using an intensity picket journal May 2003
Theory of laser-induced adiabat shaping in inertial fusion implosions: The decaying shock journal November 2003
Shock propagation in deuterium-tritium-saturated foam journal June 2005
Shock compression of molybdenum to 2.0 TPa by means of a nuclear explosion journal July 1977
Modified shock velocity in heterogeneous wetted foams in the strong shock limit journal January 2010
Acceleration to high velocities and heating by impact using Nike KrF laser journal May 2010
Laser-supported ionization wave in under-dense gases and foams journal October 2011
Precision equation-of-state measurements on National Ignition Facility ablator materials from 1 to 12 Mbar using laser-driven shock waves journal May 2012
Alternative hot spot formation techniques using liquid deuterium-tritium layer inertial confinement fusion capsules journal September 2013
Hugoniot and mean ionization of laser-shocked Ge-doped plastic journal December 2013
Bright x-ray sources from laser irradiation of foams with high concentration of Ti journal February 2014
High-power laser interaction with low-density C–Cu foams journal November 2015
Experimental demonstration of laser imprint reduction using underdense foams journal April 2016
Shock compression experiments on Lithium Deuteride (LiD) single crystals journal December 2016
Radiation characteristics and implosion dynamics of Z-pinch dynamic hohlraums performed on PTS facility journal September 2017
Shock compression of a 2d model of DT embedded in a plastic foam
  • Phillips, Lee
  • Proceedings of the conference of the American Physical Society topical group on shock compression of condensed matter, AIP Conference Proceedings https://doi.org/10.1063/1.50678
conference January 1996
Numerical simulation of ablative Rayleigh–Taylor instability journal April 1991
A new quotidian equation of state (QEOS) for hot dense matter journal January 1988
Shock induced turbulence in composite materials at moderate Reynolds numbers journal August 1998
Direct-drive laser fusion: Status and prospects journal May 1998
Shock propagation in a low-density foam filled with fluid journal December 1998
Reduction of early-time perturbation growth in ablatively driven laser targets using tailored density profiles journal August 1999
Equation of state data experiments for plastic foams using smoothed laser beams journal August 1999
Development of dynamic high-pressure techniques in Russia journal March 1999
Shock compression of condensed materials (laboratory studies) journal April 2001
journal January 2006
Interaction of laser radiation with a porous medium and formation of a nonequilibrium plasma journal August 1997
Fabrication of Low-Density Shock-Propagation Targets Using Two-Photon Polymerization journal December 2017
Hydrodynamic Interaction of Strong Shocks with Inhomogeneous Media. I. Adiabatic Case journal September 2002
Shock impedance matching experiments in foam - solid targets: implications for `foam-buffered ICF' journal September 1998
Recent experimental results on ICF target implosions by Z-pinch radiation sources and their relevance to ICF ignition studies journal November 2003
High-gain direct-drive inertial confinement fusion for the Laser Mégajoule: recent progress journal November 2007
On the scaling of the magnetically accelerated flyer plate technique to currents greater than 20 MA journal May 2014
Wetted foam liquid fuel ICF target experiments journal May 2016
Equation of state, adiabatic sound speed, and Grüneisen coefficient of boron carbide along the principal Hugoniot to 700 GPa journal November 2016
Effect of configuration widths on the spectra of local thermodynamic equilibrium plasmas journal May 1995
Analytical linear theory for the interaction of a planar shock wave with a two- or three-dimensional random isotropic density field journal May 2011
Effect of shock-generated turbulence on the Hugoniot jump conditions journal January 2012
Radiating Shock Measurements in the Z -Pinch Dynamic Hohlraum journal March 2008
Stability of a Shock-Decelerated Ablation Front journal August 2009
Observation of Strong Oscillations of Areal Mass in an Unsupported Shock Wave journal August 2012
Absolute Equation of State Measurements on Shocked Liquid Deuterium up to 200 GPa (2 Mbar) journal January 1997
Absolute Equation-of-State Data in the 10–40 Mbar (1–4 TPa) Regime journal February 1998
Z -Pinch-Generated X Rays Demonstrate Potential for Indirect-Drive ICF Experiments journal December 1999
Direct Observation of Mass Oscillations Due to Ablative Richtmyer-Meshkov Instability in Plastic Targets journal December 2001
Absorption and scattering of high-power laser radiation in low-density porous media journal March 1999
High-resolution monochromatic x-ray imaging system based on spherically bent crystals journal January 1998
Applications of the Theory of Error to the Interpretation of Trends journal March 1929
Shock compression of porous metals and silicates journal August 2012