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This content will become publicly available on March 16, 2019

Title: Observations of non-linear plasmon damping in dense plasmas

Here, we present simulations using finite-temperature density-functional-theory molecular-dynamics to calculate dynamic dielectric properties in warm dense aluminum. The comparison between exchange-correlation functionals in the Perdew, Burke, Ernzerhof approximation, Strongly Constrained and Appropriately Normed Semilocal Density Functional, and Heyd, Scuseria, Ernzerhof (HSE) approximation indicates evident differences in the electron transition energies, dc conductivity, and Lorenz number. The HSE calculations show excellent agreement with x-ray scattering data as well as dc conductivity and absorption measurements. These findings demonstrate non-Drude behavior of the dynamic conductivity above the Cooper minimum that needs to be taken into account to determine optical properties in the warm dense matter regime.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ; ORCiD logo [3]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. Rostock, Rostock (Germany)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); European XFEL, Schenefeld (Germany); Aible GmbH, Rostock (Germany)
  3. Univ. Rostock, Rostock (Germany)
  4. CEA, DAM, DIF, Arpajon Cedex (France)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-76SF00515; FOR 2440; SFB 652; FWP 100182
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 5; Journal ID: ISSN 1070-664X
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:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1458535
Alternate Identifier(s):
OSTI ID: 1426526