%0 Journal Article
%A Zastrau, Ulf
%A Sperling, Philipp
%A Becker, Arno
%A Bornath, T.
%A Bredow, R.
%A Doeppner, Tilo
%A Dziarzhytski, Siarhei
%A Fennel, Thomas
%A Fletcher, Luke
%A Foerster, Eckhart
%A Fortmann, Carsten
%A Glenzer, Siegfried
%A Goede, Sebastian
%A Gregori, Gianluca
%A Harmand, Marion
%A Hilbert, Vinzenz
%A Holst, B.
%A Laarmann, Tim
%A Lee, Hae Ja
%A Ma, Tammy
%A Mithen, James
%A Mitzner, Rolf
%A Murphy, Christopher
%A Nakatsutsumi, Motoaki
%A Neumayer, Paul
%A Przystawik, Andreas
%A Roling, Sebastian
%A Schulz, Michael
%A Siemer, Bjoern
%A Skruszewicz, Slawomir
%A Tiggesbaeumker, Josef
%A Toleikis, Sven
%A Tschentscher, Thomas
%A White, Thomas
%A Woestmann, Michael
%A Zacharias, Helmut
%A Redmer, Ronald
%T Equilibration dynamics and conductivity of warm dense hydrogen
%J Physical review / E
%V 90
%N 1
%@ 1539-3755
%C College Park, Md.
%I APS
%M DESY-2014-03077
%P 013104
%D 2014
%X We investigate subpicosecond dynamics of warm dense hydrogen at the XUV free-electron laser facility(FLASH) at DESY (Hamburg). Ultrafast impulsive electron heating is initiated by a < 300-fs short x-rayburst of 92-eV photon energy. A second pulse probes the sample via x-ray scattering at jitter-free variabletime delay. We show that the initial molecular structure dissociates within (0.9 ± 0.2) ps, allowing us to inferthe energy transfer rate between electrons and ions. We evaluate Saha and Thomas-Fermi ionization modelsin radiation hydrodynamics simulations, predicting plasma parameters that are subsequently used to calculatethe static structure factor. A conductivity model for partially ionized plasma is validated by two-temperaturedensity-functional theory coupled to molecular dynamic simulations and agrees with the experimental data. Ourresults provide important insights and the needed experimental data on transport properties of dense plasmas.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000339565200009
%$ pmid:25122398
%R 10.1103/PhysRevE.90.013104
%U https://bib-pubdb1.desy.de/record/170923