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Title: Ab initio simulations of the dynamic ion structure factor of warm dense lithium

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4]
  1. Univ. Rostock, Rostock (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. Rostock, Rostock (Germany); Tanta Univ., Tanta (Egypt)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Univ. Rostock, Rostock (Germany)

Here, we present molecular dynamics simulations based on finite-temperature density functional theory that determine self-consistently the dynamic ion structure factor and the electronic form factor in lithium. Our comprehensive data set allows for the calculation of the dispersion relation for collective excitations, the calculation of the sound velocity, and the determination of the ion feature from the total electronic form factor and the ion structure factor. The results are compared with available experimental x-ray and neutron scattering data. Good agreement is found for both the liquid metal and warm dense matter domain. Finally, we study the impact of possible target inhomogeneities on x-ray scattering spectra.

Research Organization:
SLAC National Accelerator Lab. (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC02-76SF00515; SFB 652; FSP 302; FWP 100182
OSTI ID:
1360751
Alternate ID(s):
OSTI ID: 1350155
Journal Information:
Physical Review B, Vol. 95, Issue 14; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Ionization dynamics of dense matter generated by intense ultrashort X-ray pulses journal February 2019
Observations of non-linear plasmon damping in dense plasmas journal May 2018
Setup for meV-resolution inelastic X-ray scattering measurements and X-ray diffraction at the Matter in Extreme Conditions endstation at the Linac Coherent Light Source journal October 2018
Measurement of ionic structure in isochorically heated graphite from X-ray Thomson scattering journal February 2019
Dynamic structure factor of strongly coupled Yukawa plasmas with dissipation journal June 2019
Nonempirical Semilocal Free-Energy Density Functional for Matter under Extreme Conditions journal February 2018
Fast nonadiabatic dynamics of many-body quantum systems journal November 2019
Nonempirical Semi-local Free-Energy Density Functional for Matter Under Extreme Conditions text January 2016

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