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Evidence for a glassy state in strongly driven carbon

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Brown, C. R. D., Gericke, Dirk O., Cammarata, Marco, Cho, B. I., Döppner, T., Engelhorn, K., Förster, E., Fortmann, C. , Fritz, D., Galtier, E. et al.
(2014) Evidence for a glassy state in strongly driven carbon. Scientific Reports, Volume 4 . Article number 5214. doi:10.1038/srep05214

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Official URL: http://dx.doi.org/10.1038/srep05214

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Abstract

Here, we report results of an experiment creating a transient, highly correlated carbon state using a combination of optical and x-ray lasers. Scattered x-rays reveal a highly ordered state with an electrostatic energy significantly exceeding the thermal energy of the ions. Strong Coulomb forces are predicted to induce nucleation into a crystalline ion structure within a few picoseconds. However, we observe no evidence of such phase transition after several tens of picoseconds but strong indications for an over-correlated fluid state. The experiment suggests a much slower nucleation and points to an intermediate glassy state where the ions are frozen close to their original positions in the fluid.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Carbon, X-rays -- Scattering, Plasma astrophysics, Space sciences, Cosmic physics
Journal or Publication Title: Scientific Reports
Publisher: Nature Publishing Group
ISSN: 2045-2322
Official Date: 9 June 2014
Dates:
DateEvent
9 June 2014Published
12 May 2014Accepted
10 March 2014Submitted
Date of first compliant deposit: 27 December 2015
Volume: Volume 4
Article Number: Article number 5214
DOI: 10.1038/srep05214
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), Atomic Weapons Establishment (Great Britain) (AWE), Science and Technology Facilities Council (Great Britain) (STFC), Deutsche Forschungsgemeinschaft (DFG), Volkswagenstiftung (VWS), National Research Foundation of Korea (NRF), Institute of Science and Technology, Gwangju (South Korea) (GIST)
Grant number: EP/G007187/1 (EPSRC), EP/G007462/1 (EPSRC), EP/D062837 (EPSRC), EP/I018484 (EPSRC), FSP-301 (DFG), 2013R1A1A1007084 (NRF)

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