skip to main content

DOE PAGESDOE PAGES

Title: Measurement of Preheat Due to Nonlocal Electron Transport in Warm Dense Matter

This work presents a novel approach to study electron transport in warm dense matter. It also includes the first x-ray Thomson scattering (XRTS) measurement from low-density CH foams compressed by a strong laser-driven shock at the OMEGA laser facility. The XRTS measurement is combined with velocity interferometry (VISAR) and optical pyrometry (SOP) providing a robust measurement of thermodynamic conditions in the shock. Evidence of significant preheat contributing to elevated temperatures reaching 17.5–35 eV in shocked CH foam is measured by XRTS. These measurements are complemented by abnormally high shock velocities observed by VISAR and early emission seen by SOP. These results are compared to radiation hydrodynamics simulations that include first-principles treatment of nonlocal electron transport in warm dense matter with excellent agreement. Additional simulations confirm that the x-ray contribution to this preheat is negligible.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [1]
  1. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics
  2. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics; Univ. of Bordeaux, CNRS-CEA, UMR 5107 (France). Intensive Lasers Center and Applications (CELIA); Czech Technical Univ. in Prague (Czech Republic). Faculty of Nuclear Sciences and Physical Engineering
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-22830
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); European Regional Development Fund (ERDF)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Preheat; Warm Dense Matter; Fast Electron Transport; OMEGA; VISAR; XRTS; SOP; fast particle effects in plasmas; high-energy-density plasmas; intertial confinement fusion; plasma transport
OSTI Identifier:
1438355
Alternate Identifier(s):
OSTI ID: 1416477