Combined x-ray scattering, radiography, and velocity interferometry/streaked optical pyrometry measurements of warm dense carbon using a novel technique of shock-and-release

Journal Article · Thu May 15 04:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4876613· OSTI ID:22252823

Falk, K.; Collins, L. A.; Kagan, G.; Kress, J. D.; Montgomery, D. S.; Srinivasan, B. ^[1]; Gamboa, E. J. ^[2]; Tzeferacos, P. ^[3]; Benage, J. F. ^[1]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. University of Michigan, Ann Arbor, Michigan 48109 (United States)
3. Flash Center for Computational Science, University of Chicago, Chicago, Illinois 60637 (United States)

This work focused on a new application of the shock-and-release technique for equation of state (EOS) measurements. Warm dense matter states at near normal solid density and at temperatures close to 10 eV in diamond and graphite samples were created using a deep release from a laser-driven shock at the OMEGA laser facility. Independent temperature, density, and pressure measurements that do not depend on any theoretical models or simulations were obtained using imaging x-ray Thomson scattering, radiography, velocity interferometry, and streaked optical pyrometry. The experimental results were reproduced by the 2-D FLASH radiation hydrodynamics simulations finding a good agreement. The final EOS measurement was then compared with widely used SESAME EOS models as well as quantum molecular dynamics simulation results for carbon, which were very consistent with the experimental data.

• OSTI ID: 22252823
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 21; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DENSITY
DIAMONDS
EQUATIONS OF STATE
GRAPHITE
HYDRODYNAMICS
INTERFEROMETRY
MOLECULAR DYNAMICS METHOD
PRESSURE MEASUREMENT
SIMULATION
THOMSON SCATTERING
X RADIATION
X-RAY DIFFRACTION