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Title: Ultrafast observation of lattice dynamics in laser-irradiated gold foils

Here, we have observed the lattice expansion before the onset of compression in an optical-laser-driven target, using diffraction of femtosecond X-ray beams generated by the SPring-8 Angstrom Compact Free-electron Laser. The change in diffraction angle provides a direct measure of the lattice spacing, allowing the density to be calculated with a precision of ±1%. From the known equation of state relations, this allows an estimation of the temperature responsible for the expansion as <1000 K. The subsequent ablation-driven compression was observed with a clear rise in density at later times. This demonstrates the feasibility of studying the dynamics of preheating and shock formation with unprecedented detail.
Authors:
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  1. Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany); Osaka Univ., Osaka (Japan)
  2. Osaka Univ., Osaka (Japan)
  3. Osaka Univ., Osaka (Japan); Ecole Polytechnique, Palaiseau Cedex (France)
  4. Osaka Univ., Osaka (Japan); Russian Academy of Sciences, Moscow (Russia)
  5. IMPMS Institut de Mineralogie, Paris (France)
  6. Japan Synchrotron Radiation Research Institute, Hyogo (Japan)
  7. Univ. of Oxford, Oxford (United Kingdom)
  8. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. Okayama Univ., Tottori (Japan)
  10. National Institute for Materials Science, Hyogo (Japan)
  11. Hiroshima Univ., Higashi-Hiroshima (Japan)
  12. Kobe Univ., Hyogo (Japan)
  13. Ecole Polytechnique Palaiseau Cedex (France)
  14. RIKEN Spring-8, Hyogo (Japan)
Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 7; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1353175