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

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‚ÄČeV 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.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [3]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. University of Michigan, Ann Arbor, Michigan 48109 (United States)
  3. (United States)
  4. Flash Center for Computational Science, University of Chicago, Chicago, Illinois 60637 (United States)
Publication Date:
OSTI Identifier:
22252823
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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