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| Home > Publications database > Resolving Ultrafast Heating of Dense Cryogenic Hydrogen |
| Journal Article | DESY-2014-02703 |
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2014
APS
College Park, Md.
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Please use a persistent id in citations: doi:10.1103/PhysRevLett.112.105002
Abstract: 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 theory
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