Journal
PHYSICAL REVIEW A
Volume 86, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.86.013415
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Funding
- Shanghai Project [09310210Z1]
- Chinese Academy of Sciences
- Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, US Department of Energy
- U.S. National Science Foundation [CHE-0822646, PHY 1068752]
- Max-Planck Advanced Study Group at CFEL
- DFG via the Emmy-Noether and International Collaboration in Chemistry programs
- Cluster of Excellence: Munich Center for Advanced Photonics
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0822646] Funding Source: National Science Foundation
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We traced the femtosecond nuclear-wave-packet dynamics in ionic states of oxygen and nitrogen diatomic molecules employing 38-eV XUV-pump-XUV-probe experiments at the free-electron laser in Hamburg (FLASH). The nuclear dynamics is monitored via the detection of coincident ionic fragments using a reaction microscope and a split-mirror setup to generate the pump and probe pulses. By comparing measured kinetic-energy-release spectra with classical and quantum-mechanical simulations, we identified electronic states of the molecular ions that are populated by ionization of the neutral molecule. For specific fragment charge states, this comparison allows us to assess the relevance of specific dissociation paths.
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