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Main Title: Transient lattice contraction in the solid-to-plasma transition
Author(s): Ferguson, K. R.
Bucher, M.
Gorkhover, Tais
Boutet, S.
Fukuzawa, H.
Koglin, J. E.
Kumagai, Y.
Lutman, A.
Marinelli, A.
Messerschmidt, M.
Nagaya, K.
Turner, J.
Ueda, K.
Williams, G. J.
Bucksbaum, P. H.
Bostedt, C.
Type: Article
Language Code: en
Abstract: In condensed matter systems, strong optical excitations can induce phonon-driven processes that alter their mechanical properties. We report on a new phenomenon where a massive electronic excitation induces a collective change in the bond character that leads to transient lattice contraction. Single large van der Waals clusters were isochorically heated to a nanoplasma state with an intense 10-fs x-ray (pump) pulse. The structural evolution of the nanoplasma was probed with a second intense x-ray (probe) pulse, showing systematic contraction stemming from electron delocalization during the solid-to-plasma transition. These findings are relevant for any material in extreme conditions ranging from the time evolution of warm or hot dense matter to ultrafast imaging with intense x-ray pulses or, more generally, any situation that involves a condensed matter-to-plasma transition.
Issue Date: 2016
Date Available: 19-Apr-2018
DDC Class: 500 Naturwissenschaften und Mathematik
Subject(s): x-ray
Journal Title: Science Advances
Publisher: American Association for the Advancement of Science (AAAS)
Publisher Place: Washington, DC [u.a.]
Volume: 2
Issue: 1
Article Number: e1500837
Publisher DOI: 10.1126/sciadv.1500837
EISSN: 2375-2548
ISSN: 2375-2548
Appears in Collections:FG Energietechnik und Umweltschutz » Publications

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