Journal
FRONTIERS IN PHYSICS
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2022.838524
Keywords
non-equilibrium plasma; electron-ion equilibration; warm dense hydrogen; x-ray thomson scattering; ultrafast x-ray scattering
Categories
Funding
- DOE Office of Science, Fusion Energy Science [FWP 100182, FWP 100237]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-76SF00515]
- MEC instrument
- DOE Office of Science, Office of Fusion Energy Sciences [SF00515]
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- IST (Portugal) [DE-AC02-06CH1135]
- ALCC award
- DFG [SFB 652]
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Angularly resolved X-ray scattering measurements were used to determine the equilibration of electron and ion temperatures in warm dense matter regime. The experiment demonstrated that the energy transfer between electrons and ions is faster than predicted by classical models.
Angularly resolved X-ray scattering measurements from fs-laser heated hydrogen have been used to determine the equilibration of electron and ion temperatures in the warm dense matter regime. The relaxation of rapidly heated cryogenic hydrogen is visualized using 5.5 keV X-ray pulses from the Linac Coherent Light (LCLS) source in a 1 Hz repetition rate pump-probe setting. We demonstrate that the electron-ion energy transfer is faster than quasi-classical Landau-Spitzer models that use ad hoc cutoffs in the Coulomb logarithm.
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