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Title: Comment on “Isochoric, isobaric, and ultrafast conductivities of aluminum, lithium, and carbon in the warm dense matter regime”

Journal Article · · Physical Review E
 [1];  [2];  [3];  [2];  [4];  [5];  [6];  [2]
  1. Univ. Rostock, Rostock (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Univ. Rostock, Rostock (Germany)
  3. GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States); European XFEL, Schenefeld (Germany); Aible GmbH, Rostock (Germany)
  5. CEA, DAM, DIF, Arpajon Cedex (France)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)

Dharma-wardana et al. [M. W. C. Dharma-wardana et al., Phys. Rev. E 96, 053206 (2017)] recently calculated dynamic electrical conductivities for warm dense matter as well as for nonequilibrium two-temperature states termed “ultrafast matter” (UFM) [M. W. C. Dharma-wardana, Phys. Rev. E 93, 063205 (2016)]. In this Comment we present two evident reasons why these UFM calculations are neither suited to calculate dynamic conductivities nor x-ray Thomson scattering spectra in isochorically heated warm dense aluminum. First, the ion-ion structure factor, a major input into the conductivity and scattering spectra calculations, deviates strongly from that of isochorically heated aluminum. Second, the dynamic conductivity does not show a non-Drude behavior which is an essential prerequisite for a correct description of the absorption behavior in aluminum. In addition, we clarify misinterpretations by Dharma-wardana et al. concerning the conductivity measurements of Gathers [G. R. Gathers, Int. J. Thermophys. 4, 209 (1983)].

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC02-76SF00515; SFB 652; FOR 2440; 100182
OSTI ID:
1526415
Alternate ID(s):
OSTI ID: 1508674
Journal Information:
Physical Review E, Vol. 99, Issue 4; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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