期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.073001
关键词
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资金
- Kansas NSF EPSCoR First Award Program
- U.S. Department of Energy [DE-FG02-86ER13491]
- DFG via the Cluster of Excellence: Munich Center for Advanced Photonics
- NSFC [11274232]
- National Basic Research Program of China (973 Program) [2013CB922200]
- Shanghai Pujiang Program [13PJ1407500]
- U.S. Department of Energy (DOE) [DE-FG02-86ER13491] Funding Source: U.S. Department of Energy (DOE)
The charge rearrangement in dissociating I-2(n+) molecules is measured as a function of the internuclear distance R using extreme ultraviolet pulses delivered by the free-electron laser in Hamburg. Within an extreme ultraviolet pump-probe scheme, the first pulse initiates dissociation by multiply ionizing I 2, and the delayed probe pulse further ionizes one of the two fragments at a given time, thus triggering charge rearrangement at a well-defined R. The electron transfer between the fragments is monitored by analyzing the delay-dependent ion kinetic energies and charge states. The experimental results are in very good agreement with predictions of the classical over-the-barrier model demonstrating its validity in a thus far unexplored quasimolecular regime relevant for free-electron laser, plasma, and chemistry applications.
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