Imaging the Renner-Teller effect using laser-induced electron diffraction
| Autor: | Joachim Ullrich, Jens Biegert, Kasra Amini, Aurelien Sanchez, J. R. M. Saavedra, Lun Yue, Benjamin Wolter, Maciej Lewenstein, F. Javier García de Abajo, Stefanie Gräfe, Johannes Steinmetzer, Carolin Müller, Michael Hemmer, Tobias Steinle, M. G. Pullen, Chi Lin, Robert Moshammer, Thomas Pfeifer, Anh-Thu Le, Robert Moszynski, Michele Sclafani |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Renner–Teller effect Multidisciplinary Materials science Attosecond Resolution (electron density) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics Electron diffraction Excited state Physics - Chemical Physics Physical Sciences 0103 physical sciences Molecule Rotational spectroscopy 010306 general physics 0210 nano-technology Excitation |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences |
| Popis: | Structural information on electronically excited neutral molecules can be indirectly retrieved, largely through pump–probe and rotational spectroscopy measurements with the aid of calculations. Here, we demonstrate the direct structural retrieval of neutral carbonyl disulfide (CS2) in the B ∼ 1 B 2 excited electronic state using laser-induced electron diffraction (LIED). We unambiguously identify the ultrafast symmetric stretching and bending of the field-dressed neutral CS2 molecule with combined picometer and attosecond resolution using intrapulse pump–probe excitation and measurement. We invoke the Renner–Teller effect to populate the B ∼ 1 B 2 excited state in neutral CS2, leading to bending and stretching of the molecule. Our results demonstrate the sensitivity of LIED in retrieving the geometric structure of CS2, which is known to appear as a two-center scatterer. |
| Databáze: | OpenAIRE |
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