Abstract
AbstractHow long does it take to emit an electron from an atom? This question has intrigued scientists for decades. As such emission times are in the attosecond regime, the advent of attosecond metrology using ultrashort and intense lasers has re-triggered strong interest on the topic from an experimental standpoint. Here, we present an approach to measure such emission delays, which does not require attosecond light pulses, and works without the presence of superimposed infrared laser fields. We instead extract the emission delay from the interference pattern generated as the emitted photoelectron is diffracted by the parent ion’s potential. Targeting core electrons in CO, we measured a 2d map of photoelectron emission delays in the molecular frame over a wide range of electron energies. The emission times depend drastically on the photoelectrons’ emission directions in the molecular frame and exhibit characteristic changes along the shape resonance of the molecule.
Funder
Deutsche Forschungsgemeinschaft
Studienstiftung des Deutschen Volkes
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
Reference37 articles.
1. Eisenbud, L. The formal properties of nuclear collisions. Ph.D. thesis. (1948).
2. Wigner, E. P. Lower limit for the energy derivative of the scattering phase shift. Phys. Rev. 98, 145 (1955).
3. Smith, F. T. Lifetime matrix in collision theory. Phys. Rev. 118, 349 (1960).
4. Schultze, M. et al. Delay in photoemission. Science 328, 1658 (2010).
5. Pazourek, R., Nagele, S. & Burgdörfer, J. Attosecond chronoscopy of photoemission. Rev. Mod. Phys. 87, 765 (2015).
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