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Resolving ultrafast heating of dense cryogenic hydrogen

Zastrau, U, Sperling, P, Harmand, M, Becker, A, Bornath, T, Bredow, R, Dziarzhytski, S, Fennel, T, Fletcher, LB, Förster, E , Göde, S, Gregori, G, Hilbert, V, Hochhaus, D, Holst, B, Laarmann, T, Lee, HJ, Ma, T, Mithen, JP, Mitzner, R, Murphy, CD, Nakatsutsumi, M, Neumayer, P, Przystawik, A, Roling, S, Schulz, M, Siemer, B, Skruszewicz, S, Tiggesbäumker, J, Toleikis, S, Tschentscher, T, White, T, Wöstmann, M, Zacharias, H, Döppner, T, Glenzer, SH and Redmer, R (2014) Resolving ultrafast heating of dense cryogenic hydrogen Physical Review Letters, 112 (10).

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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. © 2014 American Physical Society.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Zastrau, U
Sperling, P
Harmand, M
Becker, A
Bornath, T
Bredow, R
Dziarzhytski, S
Fennel, T
Fletcher, LB
Förster, E
Göde, S
Gregori, G
Hilbert, V
Hochhaus, D
Holst, B
Laarmann, T
Lee, HJ
Ma, T
Mitzner, R
Murphy, CD
Nakatsutsumi, M
Neumayer, P
Przystawik, A
Roling, S
Schulz, M
Siemer, B
Skruszewicz, S
Tiggesbäumker, J
Toleikis, S
Tschentscher, T
White, T
Wöstmann, M
Zacharias, H
Döppner, T
Glenzer, SH
Redmer, R
Date : 12 March 2014
DOI : 10.1103/PhysRevLett.112.105002
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:14
Last Modified : 24 Jan 2020 23:39

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