期刊
PHYSICAL REVIEW RESEARCH
卷 4, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.4.013029
关键词
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资金
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division [DE-SC0019451, DE-FG02-86ER13491]
- Deutsche Forschungsgemeinschaft [Sonderforschungsbereich 1319]
- Volkswagen Foundation
- Cluster of Excellence Advanced Imaging of Matter of the Deutsche Forschungsgemeinschaft (DFG) [EXC 2056, 390715994]
- U.S. Department of Energy (DOE) [DE-SC0019451] Funding Source: U.S. Department of Energy (DOE)
This study demonstrates that Coulomb-explosion imaging with ultrashort x-ray pulses is a promising technique for determining the three-dimensional geometry of polyatomic systems by measuring ion momenta.
Ultrashort x-ray pulses from free-electron lasers can efficiently charge up and trigger the full fragmentation of molecules. By coincident detection of up to five ions resulting from rapid Coulomb explosion of highly charged iodomethane, we show that the full three-dimensional equilibrium geometry of this prototypical polyatomic system can be determined from the measured ion momenta with the help of a charge buildup model. Supported by simulations of how the ion momenta would reflect specific changes in molecular bond lengths and angles, we demonstrate that Coulomb-explosion imaging with ultrashort x-ray pulses is a promising technique for recording movies of multidimensional nuclear wave packets, including hydrogen motions.
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