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arXiv · 1012.1048

Timing analysis of two-electron photoemission

A. S. Kheifets·I. A. Ivanov·Igor. Bray
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Abstract

We predict a significant delay of two-electron photoemission from the helium atom after absorption of an attosecond XUV pulse. We establish this delay by solving the time dependent Schr\"odinger equation and by subsequent tracing the field-free evolution of the two-electron wave packet. This delay can also be related to the energy derivative of the phase of the complex double photoionization (DPI) amplitude which we evaluate by the convergent close-coupling method. Our observations prompt future attosecond streaking experiments on DPI of He which can elucidate various mechanisms of this strongly correlated ionization process.

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A. S. Kheifets, I. A. Ivanov, Igor. Bray. 2010-12-05. Timing analysis of two-electron photoemission. https://doi.org/10.1088/0953-4075/44/10/101003

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