Comment on “Isochoric, isobaric, and ultrafast conductivities of aluminum, lithium, and carbon in the warm dense matter regime”
- Univ. Rostock, Rostock (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. Rostock, Rostock (Germany)
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt (Germany)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); European XFEL, Schenefeld (Germany); Aible GmbH, Rostock (Germany)
- CEA, DAM, DIF, Arpajon Cedex (France)
- 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
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