Journal
SCIENCE
Volume 328, Issue 5986, Pages 1658-1662Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1189401
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Funding
- Max Planck Society
- Deutsche Forschungsgemeinschaft Cluster of Excellence: Munich Centre for Advanced Photonics
- King Saud University-Max-Planck-Institut fur Quantenoptik collaboration
- NSF [TG-PHY090031]
- Austrian Science Fund (FWF) [FWF-SFB016]
- Marie-Curie Reintegration grant [MERG-CT-2007-208643]
- Alexander von Humboldt Foundation
- ERC
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Photoemission from atoms is assumed to occur instantly in response to incident radiation and provides the basis for setting the zero of time in clocking atomic-scale electron motion. We used attosecond metrology to reveal a delay of 21 +/- 5 attoseconds in the emission of electrons liberated from the 2p orbitals of neon atoms with respect to those released from the 2s orbital by the same 100-electron volt light pulse. Small differences in the timing of photoemission from different quantum states provide a probe for modeling many-electron dynamics. Theoretical models refined with the help of attosecond timing metrology may provide insight into electron correlations and allow the setting of the zero of time in atomic-scale chronoscopy with a precision of a few attoseconds.
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