TY  - JOUR
AU  - Zastrau, Ulf
AU  - Sperling, Philipp
AU  - Becker, Arno
AU  - Bornath, T.
AU  - Bredow, R.
AU  - Doeppner, Tilo
AU  - Dziarzhytski, Siarhei
AU  - Fennel, Thomas
AU  - Fletcher, Luke
AU  - Foerster, Eckhart
AU  - Fortmann, Carsten
AU  - Glenzer, Siegfried
AU  - Goede, Sebastian
AU  - Gregori, Gianluca
AU  - Harmand, Marion
AU  - Hilbert, Vinzenz
AU  - Holst, B.
AU  - Laarmann, Tim
AU  - Lee, Hae Ja
AU  - Ma, Tammy
AU  - Mithen, James
AU  - Mitzner, Rolf
AU  - Murphy, Christopher
AU  - Nakatsutsumi, Motoaki
AU  - Neumayer, Paul
AU  - Przystawik, Andreas
AU  - Roling, Sebastian
AU  - Schulz, Michael
AU  - Siemer, Bjoern
AU  - Skruszewicz, Slawomir
AU  - Tiggesbaeumker, Josef
AU  - Toleikis, Sven
AU  - Tschentscher, Thomas
AU  - White, Thomas
AU  - Woestmann, Michael
AU  - Zacharias, Helmut
AU  - Redmer, Ronald
TI  - Equilibration dynamics and conductivity of warm dense hydrogen
JO  - Physical review / E
VL  - 90
IS  - 1
SN  - 1539-3755
CY  - College Park, Md.
PB  - APS
M1  - DESY-2014-03077
SP  - 013104
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000339565200009
C6  - pmid:25122398
DO  - DOI:10.1103/PhysRevE.90.013104
UR  - https://bib-pubdb1.desy.de/record/170923
ER  -