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タイトル: | Transient lattice contraction in the solid-to-plasma transition. |
著者: | Ferguson, Ken R Bucher, Maximilian Gorkhover, Tais Boutet, Sébastien Fukuzawa, Hironobu Koglin, Jason E Kumagai, Yoshiaki Lutman, Alberto Marinelli, Agostino Messerschmidt, Marc Nagaya, Kiyonobu Turner, Jim Ueda, Kiyoshi Williams, Garth J Bucksbaum, Philip H Bostedt, Christoph |
著者名の別形: | 福澤, 宏宣 永谷, 清信 上田, 潔 |
発行日: | 29-Jan-2016 |
出版者: | American Association for the Advancement of Science |
誌名: | Science advances |
巻: | 2 |
号: | 1 |
論文番号: | e1500837 |
抄録: | 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. |
記述: | X線自由電子レーザーに照射された微粒子が縮んだ -超強力X線パルスによる プラズマ生成初期過程での体積収縮を発見-. 京都大学プレスリリース. 2016-02-01. |
著作権等: | 2016 © The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). 10.1126/sciadv.1500837 |
URI: | http://hdl.handle.net/2433/215067 |
DOI(出版社版): | 10.1126/sciadv.1500837 |
PubMed ID: | 27152323 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2016-02-01 |
出現コレクション: | 学術雑誌掲載論文等 |
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