Journal Article

PUBDB-2019-00071

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ultrafast nonthermal heating of water initiated by an X-ray Free-Electron Laser

Beyerlein, K. R. ; Jönsson, H. O. ; Alonso-Mori, R. ; Aquila, A. ; Bajt, S.CFEL*DESY* ; Barty, A.CFEL*DESY* ; Bean, R. ; Koglin, J. E. ; Messerschmidt, M. ; Ragazzon, D. ; Sokaras, D. ; Williams, G. J. ; Hau-Riege, S. ; Boutet, S. ; Chapman, H. N.CFEL*DESY* ; Tîmneanu, N. (Corresponding author)Extern* ; Caleman, C. (Corresponding author)CFEL*DESY*

2018
National Acad. of Sciences Washington, DC

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Please use a persistent id in citations: doi:10.1073/pnas.1711220115  doi:10.3204/PUBDB-2019-00071

Abstract: The bright ultrafast pulses of X-ray Free-Electron Lasers allow investigation into the structure of matter under extreme conditions. We have used single pulses to ionize and probe water as it undergoes a phase transition from liquid to plasma. We report changes in the structure of liquid water on a femtosecond time scale when irradiated by single 6.86 keV X-ray pulses of more than 10$^6$ J/cm$^2$. These observations are supported by simulations based on molecular dynamics and plasma dynamics of a water system that is rapidly ionized and driven out of equilibrium. This exotic ionic and disordered state with the density of a liquid is suggested to be structurally different from a neutral thermally disordered state.

Note: © Published under the PNAS license

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Contributing Institute(s):

1. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)

Research Program(s):

1. 6215 - Soft Matter, Health and Life Sciences (POF3-621) (POF3-621)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2018

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