期刊
SCIENCE
卷 360, 期 6395, 页码 1326-1330出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aao4731
关键词
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资金
- ERC within the Seventh Framework Program of the European Union [AttoClock-320401]
- NCCR MUST - Swiss National Science Foundation
- National Research Foundation of Korea [2016K1A4A4A01922028]
- National Research Foundation of Korea [2016K1A4A4A01922687] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Attosecond metrology of atoms has accessed the time scale of the most fundamental processes in quantum mechanics. Transferring the time-resolved photoelectric effect from atoms to molecules considerably increases experimental and theoretical challenges. Here we show that orientation-and energy-resolved measurements characterize the molecular stereo Wigner time delay. This observable provides direct information on the localization of the excited electron wave packet within the molecular potential. Furthermore, we demonstrate that photoelectrons resulting from the dissociative ionization process of the CO molecule are preferentially emitted from the carbon end for dissociative (2)Sigma states and from the center and oxygen end for the (2)Pi states of the molecular ion. Supported by comprehensive theoretical calculations, this work constitutes a complete spatially and temporally resolved reconstruction of the molecular photoelectric effect.
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