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Title: Observation of finite-wavelength screening in high-energy-density matter

A key component for the description of charged particle systems is the screening of the Coulomb interaction between charge carriers. First investigated in the 1920s by Debye and Hückel for electrolytes, charge screening is important for determining the structural and transport properties of matter as diverse as astrophysical and laboratory plasmas, nuclear matter such as quark-gluon plasmas, electrons in solids, planetary cores and charged macromolecules. For systems with negligible dynamics, screening is still mostly described using a Debye–Hückel-type approach. Here, we report the novel observation of a significant departure from the Debye–Hückel-type model in high-energy-density matter by probing laser-driven, shock-compressed plastic with high-energy X-rays. We use spectrally resolved X-ray scattering in a geometry that enables direct investigation of the screening cloud, and demonstrate that the observed elastic scattering amplitude is only well described within a more general approach.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [6] ;  [3] ;  [7] ;  [8] ;  [5] ;  [5] ;  [5] ;  [5] ;  [4]
  1. Radiation Physics Dept. (United Kingdom); Univ. of Warwick (United Kingdom)
  2. Max-Planck-Institut fuer die Physik Komplexer Systeme, Dresden (Germany)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Univ. of Warwick (United Kingdom)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Univ. of California, Berkeley, CA (United States)
  7. Univ. of Oxford (United Kingdom)
  8. Radiation Physics Dept. (United Kingdom)
Publication Date:
OSTI Identifier:
1249388
Report Number(s):
SLAC-REPRINT-2016-006; FWP--100182
Journal ID: ISSN 2041-1723
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal Issue: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Research Org:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE ASTRO