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Title: Ultrabright x-ray laser scattering for dynamic warm dense matter physics

In megabar shock waves, materials compress and undergo a phase transition to a dense charged-particle system that is dominated by strong correlations and quantum effects. This complex state, known as warm dense matter, exists in planetary interiors and many laboratory experiments (for example, during high-power laser interactions with solids or the compression phase of inertial confinement fusion implosions). Here, we apply record peak brightness X-rays at the Linac Coherent Light Source to resolve ionic interactions at atomic (ångström) scale lengths and to determine their physical properties. Our in situ measurements characterize the compressed lattice and resolve the transition to warm dense matter, demonstrating that short-range repulsion between ions must be accounted for to obtain accurate structure factor and equation of state data. Additionally, the unique properties of the X-ray laser provide plasmon spectra that yield the temperature and density with unprecedented precision at micrometre-scale resolution in dynamic compression experiments.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [4] ;  [3] ;  [3] ;  [5] ;  [3] ;  [3] ;  [6] ;  [7] ;  [8] ;  [9] ;  [9] ;  [10] ;  [11] ;  [11] more »;  [2] ;  [2] ;  [2] ;  [12] ;  [13] ;  [2] ;  [2] « less
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of California, Berkeley, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. QuantumWise A/S, Koebenhavn (Denmark)
  5. Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. AWE plc, Reading (United Kingdom); Univ. of Warwick, Coventry (United Kingdom)
  7. AWE plc, Reading (United Kingdom)
  8. Max Planck Institute for the Physics of Complex Systems, Dresden (Germany)
  9. Univ. of Oxford, Oxford (United Kingdom)
  10. General Atomics, San Diego, CA (United States)
  11. Univ. of California, Berkeley, CA (United States)
  12. SLAC National Accelerator Lab., Menlo Park, CA (United States); Friedrich-Schiller-Univ., Jena (Germany)
  13. GSI Helmhltzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
Publication Date:
OSTI Identifier:
1176940
Report Number(s):
SLAC--PUB-16237
Journal ID: ISSN 1749-4885
DOE Contract Number:
AC02-76SF00515
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nature Photonics; Journal Volume: 114; Journal Issue: 10
Research Org:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
MATSCI; laser-produced plasmas