Kraus, D., Vorberger, Jan, Gericke, Dirk O., Bagnoud, V., Blažević, A., Cayzac, W., Frank, A., Gregori, Gianluca, Ortner, A., Otten, A., Roth, F., Schaumann, G., Schumacher, D., Siegenthaler, K., Wagner, F., Wünsch, K. and Roth, M. (2013) Probing the complex ion structure in liquid carbon at 100 GPa. Physical Review Letters, Volume 111 (Number 25). Article number 255501 . doi:10.1103/PhysRevLett.111.255501 ISSN 0031-9007.

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Abstract

We present the first direct experimental test of the complex ion structure in liquid carbon at pressures around 100 GPa, using spectrally resolved x-ray scattering from shock-compressed graphite samples. Our results confirm the structure predicted by ab initio quantum simulations and demonstrate the importance of chemical bonds at extreme conditions similar to those found in the interiors of giant planets. The evidence presented here thus provides a firmer ground for modeling the evolution and current structure of carbon-bearing icy giants like Neptune, Uranus, and a number of extrasolar planets.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Official Date:	2013
Dates:	Date Event 2013 Published
Volume:	Volume 111
Number:	Number 25
Page Range:	Article number 255501
DOI:	10.1103/PhysRevLett.111.255501
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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