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Atomic photoionization: When does it actually begin?

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Authors
Kheifets, A.
Ivanov, I.
Bray, Igor
Date
2012
Type
Conference Paper

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Kheifets, A. and Ivanov, I. and Bray, I. 2012. Atomic photoionization: When does it actually begin?, in Proceedings of the 27th International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Jul 27-Aug 2 2011, 388: Article 032009. Belfast, Northern Ireland: IOP.
Source Title
Journal of Physics: Conference Series
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Department of Physics and Astronomy
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Abstract

We analyze a time delay of one- and two-electron photoemission from an atom after absorption of an attosecond XUV pulse. We establish this delay by solving the time dependent Schrödinger equation and by subsequent tracing of the field-free evolution of the photoelectron wave packet. This delay can also be related to the energy derivative of the phase of the complex photoionization amplitude which makes the time delay a sensitive probe of many-electron correlation.