期刊
SCIENCE ADVANCES
卷 4, 期 8, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aat3962
关键词
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资金
- European Research Council within the seventh framework program of the European Union [290853-XCHEM]
- MINECO [FIS2013-42002-R, FIS2016-77889-R]
- European COST (Cooperation in Science and Technology) Action [XLIC CM1204]
- Severo Ochoa Programme for Centres of Excellence in RD (MINECO) [SEV-2016-0686]
- Maria deMaeztu Programme for Units of Excellence in RD [MDM-2014-0377]
- Helmoltz Recognition Award
- European Union [GINOP-2.3.6-15-2015-00001]
- European Regional Development Fund
- EPSRC [EP/I032517/1] Funding Source: UKRI
Autoionizing resonances are paradigmatic examples of two-path wave interferences between direct photo ionization, which takes a few attoseconds, and ionization via quasi-bound states, which takes much longer. Time-resolving the evolution of these interferences has been a long-standing goal, achieved recently in the helium atom owing to progress in attosecond technologies. However, already for the hydrogen molecule, similar time imaging has remained beyond reach due to the complex interplay between fast nuclear and electronic motions. We show how vibrationally resolved photoelectron spectra of H-2 allow one to reconstruct the associated subfemtosecond auto ionization dynamics by using the ultrafast nuclear dynamics as an internal clock, thus forgoing ultrashort pulses. Our procedure should be general for autoionization dynamics in molecules containing light nuclei, which are ubiquitous in chemistry and biology.
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