Ultrafast dynamics of fluorene initiated by highly intense laser fields
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg (Germany); SLAC
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Christian-Albrechts-Universität zu Kiel (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Oxford (United Kingdom)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Hamburg (Germany)
- Univ. of Oxford (United Kingdom); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- European XFEL, Schenefeld (Germany)
- Univ. of Oxford (United Kingdom)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science
- Lund Univ. (Sweden)
- Univ. of Amsterdam (Netherlands); Radboud Univ., Nijmegen (Netherlands)
- Université Claude Bernard Lyon, Villeurbanne (France)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; European XFEL, Schenefeld (Germany)
- Univ. of Oxford (United Kingdom); Univ. of Nottingham (United Kingdom)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); European XFEL, Schenefeld (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Ruhr Univ., Bochum (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Universidad de Valladolid (Spain)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free-Electron Laser Science; Univ. of Hamburg (Germany)
- Vrije Univ., Amsterdam (Netherlands)
- Kansas State Univ., Manhattan, KS (United States)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Groningen (Netherlands)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Class 5 Photonics, Hamburg (Germany)
Here, we present an investigation of the ultrafast dynamics of the polycyclic aromatic hydrocarbon fluorene initiated by an intense femtosecond near-infrared laser pulse (810 nm) and probed by a weak visible pulse (405 nm). Using a multichannel detection scheme (mass spectra, electron and ion velocity-map imaging), we provide a full disentanglement of the complex dynamics of the vibronically excited parent molecule, its excited ionic states, and fragments. We observed various channels resulting from the strong-field ionization regime. In particular, we observed the formation of the unstable tetracation of fluorene, above-threshold ionization features in the photoelectron spectra, and evidence of ubiquitous secondary fragmentation. We produced a global fit of all observed time-dependent photoelectron and photoion channels. This global fit includes four parent ions extracted from the mass spectra, 15 kinetic-energy-resolved ionic fragments extracted from ion velocity map imaging, and five photoelectron channels obtained from electron velocity map imaging. The fit allowed for the extraction of 60 lifetimes of various metastable photoinduced intermediates.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- Engineering and Physical Sciences Research Council (EPSRC); Federal Ministry of Education and Research (BMBF); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 2446552
- Journal Information:
- Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 30 Vol. 26; ISSN 1463-9076
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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