期刊
SCIENCE
卷 354, 期 6310, 页码 308-312出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aah3429
关键词
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资金
- Spanish Ministry of Economy and Competitiveness (MINECO), through the Severo Ochoa Programme for Centres of Excellence in RD [SEV-2015-0522, FIS2014-56774-R, FIS2014-51478-ERC]
- Catalan Institucio Catalana de Recerca I Estudis Avancats
- Agencia de Gestio d'Ajuts Universitaris i de Recerca (AGAUR)
- grant SGR
- Fundacio Cellex Barcelona
- European Union's Horizon 2020 research and innovation program under LASERLAB-EUROPE [EU-H2020 654148]
- COST Actions [MP1203]
- XUV/X-ray light and fast ions for ultrafast chemistry (XLIC)
- Marie Sklodowska-Curie [641272]
- European Research Council through ERC [338580]
- AGAUR (FI-DGR)
- ICFONEST+ program
- Marie Curie cofunding of Regional
- National and International Programs-COFUND of the European Commission
- Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy [DE-FG02-86ER13491]
- ICREA Funding Source: Custom
- Marie Curie Actions (MSCA) [641272] Funding Source: Marie Curie Actions (MSCA)
Visualizing chemical reactions as they occur requires atomic spatial and femtosecond temporal resolution. Here, we report imaging of the molecular structure of acetylene (C2H2) 9 femtoseconds after ionization. Using mid-infrared laser-induced electron diffraction (LIED), we obtained snapshots as a proton departs the [C2H2](2+) ion. By introducing an additional laser field, we also demonstrate control over the ultrafast dissociation process and resolve different bond dynamics for molecules oriented parallel versus perpendicular to the LIED field. These measurements are in excellent agreement with a quantum chemical description of field-dressed molecular dynamics.
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