Resolving Ultrafast Heating of Dense Cryogenic Hydrogen
- Zastrau, U.
- Sperling, P.
- Göde, S.
- Gregori, G.
- Hilbert, V.
- Hochhaus, D.
- Holst, B.
- Laarmann, T.
- Lee, H. J.
- Ma, T.
- Mithen, J. P.
- Mitzner, R.
- Harmand, M.
- Murphy, C. D.
- Nakatsutsumi, M.
- Neumayer, P.
- Przystawik, A.
- Roling, S.
- Schulz, M.
- Siemer, B.
- Skruszewicz, S.
- Tiggesbäumker, J.
- Toleikis, S.
- Becker, A.
- Tschentscher, T.
- White, T.
- Wöstmann, M.
- Zacharias, H.
- Döppner, T.
- Glenzer, S. H.
- Redmer, R.
- Bornath, T.
- Bredow, R.
- Dziarzhytski, S.
- Fennel, T.
- Fletcher, L. B.
- Förster, E.
DOIAbstract
We report on the dynamics of ultrafast heating in cryogenic hydrogen initiated by a ≲300 fs, 92 eV free electron laser x-ray burst. The rise of the x-ray scattering amplitude from a second x-ray pulse probes the transition from dense cryogenic molecular hydrogen to a nearly uncorrelated plasmalike structure, indicating an electron-ion equilibration time of ∼0.9 ps. The rise time agrees with radiation hydrodynamics simulations based on a conductivity model for partially ionized plasma that is validated by two-temperature density-functional theor
Add to ORKG