Journal Article

PUBDB-2020-04811

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Experimental observation of the liquid-liquid transition in bulk supercooled water under pressure

Kim, K. H. ; Amann-Winkel, K. ; Giovambattista, N. ; Späh, A. ; Perakis, F. ; Pathak, H. ; Parada, M. L. ; Yang, C. ; Mariedahl, D. ; Eklund, T. ; Lane, T. J.CFEL*DESY* ; You, S. ; Jeong, S. ; Weston, M. ; Lee, J. H. ; Eom, I. ; Kim, M. ; Park, J. ; Chun, S. H. ; Poole, P. H. ; Nilsson, A. (Corresponding author)

2020
Assoc. Washington, DC

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Please use a persistent id in citations: doi:10.1126/science.abb9385  doi:10.3204/PUBDB-2020-04811

Abstract: We prepared bulk samples of supercooled liquid water under pressure by isochoric heating of high-density amorphous ice to temperatures of 205 ± 10 kelvin, using an infrared femtosecond laser. Because the sample density is preserved during the ultrafast heating, we could estimate an initial internal pressure of 2.5 to 3.5 kilobar in the high-density liquid phase. After heating, the sample expanded rapidly, and we captured the resulting decompression process with femtosecond x-ray laser pulses at different pump-probe delay times. A discontinuous structural change occurred in which low-density liquid domains appeared and grew on time scales between 20 nanoseconds to 3 microseconds, whereas crystallization occurs on time scales of 3 to 50 microseconds. The dynamics of the two processes being separated by more than one order of magnitude provides support for a liquid-liquid transition in bulk supercooled water.

Note: Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science.

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Contributing Institute(s):

1. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)
2. FS-CFEL-1 (Group Leader: Henry Chapman) (CFEL-I)

Research Program(s):

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

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2020

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