期刊
SCIENCE
卷 343, 期 6169, 页码 396-399出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1247424
关键词
-
资金
- U.S. Department of Energy [DE-FG03-98ER14879, DE-FG02-05ER15694]
- German Academic Exchange Service (DAAD)
- National Natural Science Foundation of China [21303110]
The study of gas-phase reaction dynamics has advanced to a point where four-atom reactions are the proving ground for detailed comparisons between experiment and theory. Here, a combined experimental and theoretical study of the dissociation dynamics of the tetra-atomic FH2O system is presented, providing snapshots of the F + H2O -> HF + OH reaction. Photoelectron-photofragment coincidence measurements of the dissociative photodetachment (DPD) of the F-(H2O) anion revealed various dissociation pathways along different electronic states. A distinct photoelectron spectrum of stable FH-OH complexes was also measured and attributed to long-lived Feshbach resonances. Comparison to full-dimensional quantum calculations confirms the sensitivity of the DPD measurements to the subtle dynamics on the low-lying FH2O potential energy surfaces over a wide range of nuclear configurations and energies.
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