Ultrafast electron diffraction imaging of bond breaking in di-ionized acetylene
| Autor: | J. Ullrich, Michael Hemmer, Matthias Baudisch, Jens Biegert, Thomas Pfeifer, Katharina Doblhoff-Dier, Stefanie Gräfe, Benjamin Wolter, Anh-Thu Le, Arne Senftleben, Oriol Vendrell, M. G. Pullen, Robert Moshammer, C. D. Schröter, Chi Lin |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Institut de Ciències Fotòniques |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics::Optics
02 engineering and technology 01 natural sciences Molecular physics Ion chemistry.chemical_compound Molecular dynamics Nuclear magnetic resonance Ionization 0103 physical sciences Acetilè Physics::Atomic and Molecular Clusters Molecule 010306 general physics SCALE Multidisciplinary Física [Àrees temàtiques de la UPC] Chemistry Acetylene Ultrafast electron diffraction BORN-OPPENHEIMER 021001 nanoscience & nanotechnology Electron diffraction RESOLUTION MOLECULAR-DYNAMICS Femtosecond 0210 nano-technology |
| Zdroj: | Wolter, B, Pullen, M G, Le, A-T, Baudisch, M, Doblhoff-Dier, K, Senftleben, A, Hemmer, M, Schroeter, C D, Ullrich, J, Pfeifer, T, Moshammer, R, Graefe, S, Vendrell, O, Lin, C D & Biegert, J 2016, ' Ultrafast electron diffraction imaging of bond breaking in di-ionized acetylene ', Science, vol. 354, no. 6310, pp. 308-312 . https://doi.org/10.1126/science.aah3429 Recercat. Dipósit de la Recerca de Catalunya instname Science UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| DOI: | 10.1126/science.aah3429 |
| Popis: | Visualizing chemical reactions as they occur requires atomic spatial and femtosecond temporal resolution. Here, we report imaging of the molecular structure of acetylene (C 2 H 2 ) 9 femtoseconds after ionization. Using mid-infrared laser–induced electron diffraction (LIED), we obtained snapshots as a proton departs the [C 2 H 2 ] 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. |
| Databáze: | OpenAIRE |
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